Re: why can't i login to tomcat7 status page from clean install zip

[Bob Hall]

 Bo,
On Monday, December 17, 2018, 9:49:34 PM PST, Bo  wrote:
 
 >  > here is screenshot
> 
> I just tried again still no working\
> 
>. https://i.imgur.com/8bQH2YB.png

At the risk of stating the obvious, your screenshot shows: - a tomcat-users.xml 
file with three usernames: dog, god, and role1.
- a Tomcat login page with username admin
Did you try logging in with username god or adding a user with username admin?
- Bob

  

Re: [maybe OT] /dev/urandom [was : Re: Tomcat 8.5.23 Initialization PRNG/SSL]

[Bob Hall]

 > On Friday, October 27, 2017, 2:32:50 PM PDT, André Warnier (tomcat) 
 >  wrote:
 >  >  > There seem to be a recrudescence of interventions on this list about 
 >SSL/HTTPS, and 
> associated discussions about the usage of various randomness sources.> I 
> found this article interesting :> https://www.2uo.de/myths-about-urandom/

André, [OT] or not, thanks for adding a word to my vocabulary and for the 
article; recrudescence sounds better in French:
Google Translate


| 
| 
|  | 
Google Translate

Google's free service instantly translates words, phrases, and web pages 
between English and over 100 other lang...
 |

 |

 |


- Bob
  

Re: Typo in my previous post, Re: Protecting files within a context

[Bob Hall]

On Thursday, August 24, 2017 5:48 PM, Bob Hall <rfha...@yahoo.com> wrote:
Yahoo auto-munged the URL, it should be:
https://tomcat.apache.org/tomcat-8.0-doc/realm-howto.html


- Bob
  

   

Re: Typo in my previous post, Re: Protecting files within a context

[Bob Hall]

 

On Thursday, August 24, 2017 5:29 PM, James H. H. Lampert 
 wrote:
> Cache and cookies both cleared, all the way back, and the context 
> that theoretically should be presenting a sign-on dialog for the 
> forbidden pages still serves an immediate 403 page instead.


I don't use Tomcat's Realms for AuthN/AuthZ; the cookie clearing suggestion was 
a bit of a guess.
Does your app's web.xml include a  element?
Apache Tomcat 8 (8.0.46) - Realm Configuration HOW-TO

  
|  
|   |  
Apache Tomcat 8 (8.0.46) - Realm Configuration HOW-TO
 By Craig R. McClanahan   |  |

  |

 

- Bob




   

Re: Typo in my previous post, Re: Protecting files within a context

[Bob Hall]

James,

On Thursday, August 24, 2017 4:58 PM, James H. H. Lampert 
 wrote:
 
>> This is interesting:
>>
>> I added this (contents of web-resource-collection omitted) to the top of
>> the context's web.inf, right below the "web-app" and "display-name" tags:
>>
>>>      
>> . . .
>>>      
>>>      
>>> 
>. . .
>
> Of course, I meant to say, ". . . the context's WEB-INF/web.xml"
> 
> Oops. The question in my previous post still stands: why is it that when 
> I change the above to an auth-constraint that *should* produce a 
> password dialog, am I still going straight to a 403 page?
If you successfully logged in previously, I suggest you check your browser for 
any cookies that were created at that time.  You will probably need to remove 
them before the login challenge will be presented.
- Bob
   

Re: Protecting files within a context

[Bob Hall]

 James,

On Thursday, August 24, 2017 2:26 PM, James H. H. Lampert 
 wrote:
 
> Could you be a bit more specific on what edition of the servlet spec, 
and where I can find it?

> The first one I grabbed ("Java Servlet Specification Version 2.4") is 
over a decade old, and doesn't *have* a section 13.8.

https://www.google.com/search?q=servlet+spec+section+13.8=servlet+spec+section+13.8=chrome..69i57.7134j0j1=chrome=UTF-8

   

Re: [ANN] End of life for Apache Tomcat 8.0.x

[Bob Hall]

On Friday, June 30, 2017 2:32 PM, Mark Thomas  wrote:
 

 
The Apache Tomcat team announces that support for Apache Tomcat 8.0.xwill end 
on 30 June 2018.
This means that after 30 June 2018:- releases from the 8.0.x branch are highly 
unlikely- bugs affecting only the 8.0.x branch will not be addressed- security 
vulnerability reports will not be checked against the 8.0.x  branch
Three months later (i.e. after 30 September 2017)- the 8.0.x download links 
will be removed- the latest 8.0.x release will be removed from the mirror 
system- the 8.0.x branch in svn will move from /tomcat/tc8.0.x to  
/tomcat/archive/tc8.0.x- the links to the 8.0.x documentation will be removed 
from  tomcat.apache.org
Note that all 8.0.x releases will always be available from the archive.
It is anticipated that the final 8.0.x release will be made shortlybefore 30 
June 2016.
The Tomcat team is aware that a number of Linux distributions supportTomcat 
8.0.x and that that support for Tomcat 8.0.x is scheduled tocontinue in those 
distributions beyond June 2018. The Tomcat team willtherefore:- work with those 
distributions to address any issues preventing the  update to 8.5.x from 8.0.x- 
where an update to 8.5.x is not possible, the Tomcat team will  endeavour to 
provide advice on back-porting security fixes to 8.0.x

===
Hi Mark,
Seems to something amiss with the year values in this EOL message?
- Bob


   

Re: I'm using jdk1.6 + tomcat 7.0.23

[Bob Hall]

On Saturday, June 20, 2015 11:17 PM, hao huang huanghao...@gmail.com wrote:


  
   Can you put my E-mail account deleted from the mailing list, thank you

Hao, as indicated here:   Apache Tomcat - Mailing Lists
you should send a blank email to users-unsubscr...@tomcat.apache.org to 
unsubscribe from the Tomcat users list.
- Bob     

Re: Anyway to enable just all TLS protocols in APR connector?

[Bob Hall]

On Friday, October 17, 2014 1:05 PM, Jeffrey Janner 
jeffrey.jan...@polydyne.com wrote:




  With baited breath, but not holding it.

Should be bated breath.

- Bob

Re: Help regarding CSRF Filter in Tomcat 7

[Bob Hall]

André,

On 16/11/2012 14:39, André Warnier wrote:


  Response (to Mark and David) : I accept the verdict of the native 
 English-speakers.
  In my defense, I would say that to me, the word useless has more of a 
 negative connotation than what I wanted to express.  Using an expression
  such as the filter is useless here may have suggested that I thought that 
 this code was not worth the memory cells it was written on.  Which is of
  course far from my thoughts on the matter.
 Unnecessary was a way for me to express that in these particular 
 circumstances, it would 1) not help, while 2) - being a filter - adding 
 unwarranted
 (?) overhead to the application.

filter is ineffective might work for you.

- Bob

Re: [Tomcat JDBC Pool] Close pooled connections via JMX

[Bob Hall]

From: Brooke Hedrick brooke.t.hedr...@gmail.com
To: Tomcat Users List users@tomcat.apache.org 
Sent: Sunday, March 4, 2012 12:21 PM

 On Mar 4, 2012, at 1:35 PM, Chema demablo...@gmail.com wrote:
 
 We use Spring w/ Hibernate as I recall.  Yes, we have talked about that - a
 ping query.  What we don't like about that is now we have a tc ping and app
 ping.  We have also discussed just changing the tc borrow/ping to do the
 dual@remotedb query as this would test both primary and remote.  We have
 tested this and it works.  What stinks about this is we only access the
 remotedb 10% of the time.
 
 Well, I don't know how works Hibernate , but I know that you can have
 many SessionFactory
 Can you define different SessionFactory with different settings , for
 example, with different pingQuery value?
 Does Hibernate have a pingQuery setting ?

 
 Even if it does, are we actually losing the close() method for the connection 
 pool mbean?  If so, why?
 
 This change would mean requiring many development teams to change many apps.  
 I don't see the value of requiring that change - if it is actually the case 
 we are losing the close() method.


Have you tried defining views in the primary database based on the @otherdb 
queries?

- Bob

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Re: [Tomcat JDBC Pool] Close pooled connections via JMX

[Bob Hall]

From:Brooke Hedrick brooke.t.hedr...@gmail.com
Sent: Sunday, March 4, 2012 1:57 PM



 Have you tried defining views in the primary database based on the @otherdb 
 queries?


 Bob,
 How will that help with the borrow query and not wanting to run extra queries 
 to the remote db when not necessary?

It should eliminate the need to run extra queries, the queries would only be 
run when necessary against the views defined in the primary database.
Hopefully, Oracle will manage restarts of the remote DB.

 Everyone - the feedback is great, but it still is just working around the 
 elimination of a jmx call, if that is the case.
 Why is the jmc close() method being eliminated?


Using views might result in the restoration of the close() method.

- Bob

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Re: Errors with NIO processor

[Bob Hall]

Matt,

Did the testing include load testing?  Have you checked the open file limit 
values?

If not, you may be running into an open file limit for the OS and/or user 
that is running Tomcat.

- Bob



From: Matthew Tyson matthewcarlty...@gmail.com
To: Tomcat Users List users@tomcat.apache.org
Sent: Tuesday, November 15, 2011 4:18 PM
Subject: Re: Errors with NIO processor

Is there more info I can provide to help diagnose this error?  It is
killing us.

Thanks,

Matt



On Tue, Nov 15, 2011 at 9:00 AM, Matthew Tyson
matthewcarlty...@gmail.comwrote:

 Hey Guys,

 We are seeing the following errors (in production of course, testing
 didn't reveal this) after switching to NIO protocol.

 This is Tomcat 7.0.22 on CentOS 6.  There is a load balancer sending only
 comet traffic to port 8080, where the NIO protocol is used.

 Nov 15, 2011 8:39:29 AM org.apache.tomcat.util.net.NioEndpoint
 processSocket
 SEVERE: Error allocating socket processor
 java.lang.NullPointerException
 Nov 15, 2011 8:39:51 AM org.apache.tomcat.util.net.NioEndpoint
 processSocket
 SEVERE: Error allocating socket processor
 java.lang.NullPointerException
         at
 org.apache.tomcat.util.net.NioEndpoint.processSocket(NioEndpoint.java:712)
         at
 org.apache.tomcat.util.net.NioEndpoint$Poller.processKey(NioEndpoint.java:1200)
         at
 org.apache.tomcat.util.net.NioEndpoint$Poller.run(NioEndpoint.java:1136)
         at java.lang.Thread.run(Thread.java:662)
 Nov 15, 2011 8:39:52 AM
 org.apache.coyote.AbstractProtocol$AbstractConnectionHandler process
 SEVERE: null
 java.lang.IllegalStateException: Calling [asyncPostProcess()] is not valid
 for a request with Async state [STARTED]
         at
 org.apache.coyote.AsyncStateMachine.asyncPostProcess(AsyncStateMachine.java:202)
         at
 org.apache.coyote.AbstractProcessor.asyncPostProcess(AbstractProcessor.java:104)
         at
 org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:519)
         at
 org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1550)
         at
 java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
         at
 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
         at java.lang.Thread.run(Thread.java:662)
 Exception in declaration()

 I see more of the Calling [asyncPostProcess()] is not valid for a request
 with Async state [STARTED] error by itself also.  Here is the connector
 setup:

 Connector port=8080
 protocol=org.apache.coyote.http11.Http11NioProtocol
                connectionTimeout=2
                redirectPort=8443 /

 Any direction on where to look for the cause?

 Thanks,

 Matt

Re: JSP Exception object arriving null at error handler

[Bob Hall]

From: Nadav Katz nadav.k...@oracle.com
To: Tomcat Users List users@tomcat.apache.org
Sent: Sunday, September 11, 2011 2:11 AM
Subject: JSP Exception object arriving null at error handler

Hi,

I seem to be having a problem with the exception object attribute arriving null 
at the error handeling jsp. 

Since I encountered this error in production, I recreated on a small project.

This is the web.xml error page entry: 

error-page

    error-code404/error-code

    location/notFoundErrorPage.jsp/location

/error-page

 

This is notFoundError.jsp:

%@ page isErrorPage=true %

%@ page isELIgnored=false%

 

%

    if(exception != null)

    {

        System.out.println(Exception is not Null, it's  + 
exception.toString());

    }

      else

      {

    System.out.println(Exception is Null!!);

      }

%

What am I doing wrong? 



Nadav,

There is no Exception in this case.

This example should work for you _and_ allow you to display the resource that 
was not found:

http://stackoverflow.com/questions/4948275/get-url-of-page-requested-that-caused-a-404

- Bob

Re: Save session information in Memory database

[Bob Hall]

From: Ashish Kulkarni ashish.kulkarn...@gmail.com
To: Tomcat Users List users@tomcat.apache.org
Sent: Friday, September 9, 2011 11:38 AM
Subject: Re: Save session information in Memory database

Hi
I have inherited this application, and it was developed this way, i dont
have time and resources to analyze this application to start removing data
from session, so i am looking for ways to get it working without having to
go through this process of removing data from session,
I thought if i could save session information in a database instead of in
heap it would work, and so in memory database and it would be faster to
access then regular DB2 database
So any ideas
Ashish

--

Ashish,

Have you considered ehcache?   http://ehcache.org/

- Bob

Re: recovering connections on jdbc connection pool

[Bob Hall]

 try {
 while (it.hasNext()) {
 c1 = getConnection();


You should move getConnection() outside of the while() block.

- Bob

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Re: Tomcat for Mac

[Bob Hall]

--- On Fri, 4/22/11 at 1:34 AM, Brajesh Patel brajeshpate...@gmail.com wrote:

 Hello All,
 I have Mac book and want to run tomcat on it so please
 provide steps or
 documentation it will great help.
 
 -- 
 Thanks
 Brajesh Patel
 

http://lmgtfy.com/?q=tomcat+install+mac

- Bob

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Re: [OT] servlet-specific error pages

[Bob Hall]

Chris,

--- On Wed, 4/13/11 at 1:11 PM, Christopher Schultz 
ch...@christopherschultz.net wrote:

 Basically, I want two defaults.
 
 If the servlet spec allowed for error-page to
 include a servlet-name
 filter, that's what I would use. But it doesn't :(
 

Would an Exception marker interface help to differentiate Servlet and other 
Exceptions?

A Servlet could conditionally throw Exceptions that implemented a given marker 
interface.

An error-page JSP could use instanceof to check for marker interface(s) and 
conditionally handle presentation of the Exceptions.

- Bob



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Re: JSP class size increase in Tomcat 7

[Bob Hall]

Jess,

--- On Thu, 3/10/11 at 7:10 PM, Jess Holle je...@ptc.com wrote:

 P.S. This was with Tomcat 7.0.10.
 
 On 3/10/2011 9:10 PM, Jess Holle wrote:
  I've been looking at moving to Tomcat 7 from Tomcat
 6.
  
  Most things look good.
  
  I have been surprised by one thing, however: Tomcat 7
 produces larger JSP class files than Tomcat 6 from the same
 JSP source files, tag libraries, etc.  Around 12%
 larger in some examples I've been looking at (whereas the
 intermediate Java sources increase in size by ~1%).
  

Is the same version of Java used in both cases?

- Bob




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Re: JSP class size increase in Tomcat 7

[Bob Hall]

--- On Thu, 3/10/11 at 8:43 PM, Jess Holle je...@ptc.com wrote:

  Yes, both Java 6 Update 24.
  Just to verify, are both instances Tomcat running in
 the same JVM mode (-client or -server)?  (That
 shouldn't affect the .class file size, but just
 checking...)
 Yes.
 

Have you compared the size of .class files generated for a simple hello world 
JSP in the two Tomcat instances?

- Bob




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Re: Servlet mapping doesn't work after upgrading from Tomcat 5 to 6

[Bob Hall]

Dharamshila,

--- On Tue, 3/8/11 at 7:35 PM, Dharamshila Khandelwal dharmshil...@gmail.com 
wrote:
Thanks for your response Christopher!
I have structs.jar in WEB-INF/lib. I even tried putting it in 
CATALINA_HOME/lib, but it didn't work. 
I have attached the log files as you had requested. 
As Chris already mentioned, attachments are normally stripped and you will need 
to copy-paste a hopefully small relevant portion of the log file(s).

- Bob




  

RE: localhost

[Bob Hall]

Ken,

--- On Sun, 3/6/11 at 6:49 PM, ken dias kend...@hotmail.com wrote:

 I am running Tomcat 6.0.024 server. This server is always
 on. Java  6 is used.
 Checked task manager and could not find pid 1908. Did find
 the vertical line on my keyboard.
  
 Ken

http://localhost:8080

- Bob




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Re: connection Pooling in tomcat 6

[Bob Hall]

--- On Wed, 11/3/10 at 10:30 PM, mike houston mike.housto...@gmail.com wrote:

 Can you please explain to me in
 detail.
 
 Thanks,
 M

http://lmgtfy.com/?q=tomcat+6+dbcpl=1

- Bob


  

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RE: Tomcat ldap authentication with 403 Forbidden error

[Bob Hall]

Julio,

--- On Mon, 9/27/10 at 11:24 AM, Caldarale, Charles R 
chuck.caldar...@unisys.com wrote:

  The security-role is right below the
 security-constraint 
  closing tag and above the login-config opening tag.
 
 Sorry, I missed it.  However, the
 security-role element normally comes /after/
 login-config; not sure if that's required by the
 DTD, by your ordering is unusual.
 

In case you are still encountering a problem you could try listing the role(s) 
that have been assigned after authentication and comparing with 
authenticated-user; note that the comparison is case sensitive.

- Bob




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RE: Tomcat ldap authentication with 403 Forbidden error

[Bob Hall]

Oops, just saw the [solved] msg...

--- On Mon, 9/27/10 at 7:55 PM, Bob Hall rfha...@yahoo.com wrote:

 --- On Mon, 9/27/10 at 11:24 AM, Caldarale, Charles R
 chuck.caldar...@unisys.com
 wrote:
 
   The security-role is right below the
  security-constraint 
   closing tag and above the login-config opening
 tag.
  
  Sorry, I missed it.  However, the
  security-role element normally comes /after/
  login-config; not sure if that's required by
 the
  DTD, by your ordering is unusual.
  
 
 In case you are still encountering a problem you could try
 listing the role(s) that have been assigned after
 authentication and comparing with authenticated-user; note
 that the comparison is case sensitive.





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Re: [OT] Mike Wilde is out of the office

[Bob Hall]

--- On Wed, 8/4/10 at 9:48 AM, Christopher Schultz 
ch...@christopherschultz.net wrote:

 Mike,
 
 You sure seem to be out of the office a lot.
 
 Are they paying you well over there?
 
 Also, it seems you have returned (today is 2010-08-04, at
 least in
 Washington, DC): you should either disable your
 out-of-office reminder
 or update the dates ;)
 
 - -chris
 

Or he's using DD/MM/.  In any case, he should configure his out-of-office 
reminder to *not* be sent to user lists...

- Bob


  

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Re: WebApp not recognised when having context.xml

[Bob Hall]

--- On Thu, 7/15/10 at 2:56 PM, bugger s...@trash-mail.com wrote:

 Found the problem.Context must be written with
 capital letter at the
 beginning. 
 -- 

Which Chuck pointed out earlier; about 50 minutes before you found it.

- Bob


  

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Re: jsre_home is null

[Bob Hall]

--- On Wed, 7/14/10 at 10:08 AM, testwreq wreq testw...@gmail.com wrote:

 catalina logs are showing jre_home as
 null. Any ideas how to set it?
 

Earlier, in a separate thread, you indicated that java 1.6 was installed.

At the command prompt type:

$ which java

which should display something like:

/usr/local/jdk1.6/bin/java

Depending on the 'shell' you are using you should be able to use of the 
following commands:

$ export JAVA_HOME=/usr/local/jdk1.6

$ setenv JAVA_HOME /usr/local/jdk1.6

This will only set JAVA_HOME for the current 'shell', it is not permanent.  

- Bob


  

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Re: weird bug?

[Bob Hall]

--- On Tue, 7/13/10 at 2:50 PM, michel compu...@videotron.ca wrote:

 You could have just answered my
 question, instead of making such a snarky reply.
 

Perhaps this will help:

  http://en.wikipedia.org/wiki/User:DonDiego/Thread_hijacking

- Bob


  

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Re: Error on startup catalina

[Bob Hall]

Sondro,

--- On Wed, 6/2/10 at 2:57 PM, Sandro Gallo sandro.gallo...@gmail.com wrote:

 TOMCAT version: 6.0.26.
 
 java -version
 java version 1.6.0_17
 Java(TM) SE Runtime Environment (build 1.6.0_17-b04-248)
 Java HotSpot(TM) 64-Bit Server VM (build 14.3-b01-101,
 mixed mode)
 The version of Java is already on Mac.
 
 I installed Tomcat by following this step:
 1. download from site,
 2. create folder /Library/Tomcat,
 3. untar file in this new folder,
 4. create simbolic link from
 /Library/Tomcat/apache-tomcat-6.0.26  to 
 /Library/Tomcat/Home,
 5. create env variables CATALINA_HOME, JAVA_HOME.
 
 All files in CATALINA_HOME/bin have exec permission.

Check the permissions of bin/tomcat-juli.jar; it needs to be readable by the 
user that is running tomcat.

And try running Tomcat without the benefit of the symbolic link or setting 
CATALINA_HOME:

$ export CATALINA_HOME=

$ /Library/Tomcat/apache-tomcat-6.0.26/bin/startup.sh

- Bob




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Re: stuck confused an need help please

[Bob Hall]

--- On Mon, 5/24/10 at 11:52 PM, Yucca Nel yucca...@live.co.za wrote:

 Could someone please help me understand what thia stack
 trace is saying?
 
 catalina.log
 File Type: ASCII English text, with very long lines
 
 INFO main org.apache.catalina.startup.Catalina -
 Initialization processed in 875 ms
 INFO main org.apache.catalina.core.StandardService -
 Starting service Catalina
 INFO main org.apache.catalina.core.StandardEngine -
 Starting Servlet Engine: Apache Tomcat/6.0.20
 ERROR main
 org.apache.catalina.core.ContainerBase.[Catalina] -
 Exception opening database connection
 java.sql.SQLException: Access denied for user ' yucca123_tom'@'localhost' 
 (using password: YES)

There is leading white space in the user name: ' yucca123_tom'.

There are also errors in your DDL SQL that will need to be fixed after
your app is able to connect to the DB.

 ERROR TP-Processor2 org.hibernate.tool.hbm2ddl.SchemaUpdate
 - ALTER command denied to user 'yucca123_hiber'@'localhost'
 for table 'usercomments'
 ERROR TP-Processor2
 org.hibernate.util.JDBCExceptionReporter - SELECT command
 denied to user 'yucca123_hiber'@'localhost' for table
 'usercomments'

Don't know why there are two DB users in play:
  yucca123_tom and yucca123_hiber

Apparently, the latter was able to connect to MySQL  but could not
access a table.  Are you sure the table exists?  Did you grant select
on the table to yucca123_hiber?

- Bob 


  

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Re: stuck confused an need help please

[Bob Hall]

--- On Tue, 5/25/10 at 12:20 AM, Yucca Nel yucca...@live.co.za wrote:

 I know what the exception is saying but I can only swear
 that I am providing correct credentials.


Did you notice:

 There is leading white space in the user name: ' yucca123_tom'.

- Bob 


  

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Re: Help need for implementing Custom Login Module

[Bob Hall]

Srinivas,

--- On Wed, 5/5/10 at 5:05 PM, Srinivasa Rao.Kandula srinivas_j...@yahoo.com 
wrote:

 Well, I know how to implement
 form-based authentication. Here the requirement is to access
 ServletRequest/HttpSession from the login module. Thanks for
 you inputs though. 
 

You could implement a Filter that extracts the attribute(s) of interest
from the ServletRequest/HttpSession and use ThreadLocal to make the
attribute(s) available throughout your application for the life of the
Request.

- Bob


  

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Re: FW: General / Special cause under which TOMCAT Crash been noticed

[Bob Hall]

Karthik,

--- On Thu, 4/29/10 at 11:02 PM, Karthik Nanjangude 
karthik.nanjang...@xius-bcgi.com wrote:

 
 This is in referral to one of the form topics raised some
 day's ago
 
 For JVM  to restart Tomcat in 1 case  when
 OnOutOfMemoryError
 
 was raised
 
 URL http://marc.info/?l=tomcat-userm=127119151302985w=2
 
 Refers  to -XX:OnOutOfMemoryError=cmd
 args;cmd args  for restart
 
 
 I wanted to make sure if any other cause for TOMCAT Crash
 been noticed.
 
 

Yes...

- Bob




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Re: getting servlet context in JSF?

[Bob Hall]

Yucca,

--- On Wed, 4/28/10 at 11:34 PM, Yucca Nel yucca...@live.co.za wrote:

 Hello, is it possible to gain access
 to servletcontext  from JSP using faces or servlet EL?

Yes.

Using your subject line in a google search, third result:

  http://www.mail-archive.com/u...@shale.apache.org/msg01707.html

- Bob




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Re: EE application server

[Bob Hall]

Navid,

--- On Tue, 4/27/10 at 12:38 AM, Navid Esfahani na...@sobhanpaya.com wrote:
I want to know is this possible to use apache tomcat
application server for Enterprise Application(EAR)? 

  
No.
Is there two version for web-server and EE applications
server? 


 No.
 

how can I download EE application server?
http://www.lmgtfy.com/?q=java+ee+servers
- Bob



  

Re: SV: set time out based on userInRole

[Bob Hall]

Soren,

--- On Mon, 4/19/10 at 5:01 AM, Søren Blidorf so...@nolas.dk wrote:
 Fx if you are admin no connectionTimeout and if you are
 user
 connectionTimeout 20 min
 

session.setMaxInactiveInterval()

- Bob




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Re: Session Timeout - Filter Not Called

[Bob Hall]

Paul,

--- On Mon, 4/12/10 at 7:21 AM, Paul Carroll pcarr...@nfmail.net wrote:

 That works in that my filter is
 called when the session times out and the user is redirected
 to the login page.  However, the Referer header makes
 no indication that the user is logging in.

What does the referrer header contain?

 If the request URI is not null, then I can redirect them to the requested
 URI if it has been determined that it is a safe area that
 does not need any session variables established.  Is
 there a way to determine if the user's session has timed out
 and the user is logging in once again?

Check for the session variables that would have been set?

- Bob




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Re: The question of automatic restart Tomcat

[Bob Hall]

Gregor,

--- On Tue, 4/13/10 at 1:19 PM, Gregor Schneider rc4...@googlemail.com wrote:

 
  -XX:OnOutOfMemoryError=/usr/sbin/restart_tcserver
 
 I'm not aware of that option within my standard sun jdk
 1.6.x - what
 Java-version are you running offering this really useful
 feature?
 

I wasn't aware of it either.

From http://java.sun.com/javase/technologies/hotspot/vmoptions.jsp

-XX:OnOutOfMemoryError=cmd args;cmd args

Run user-defined commands when an OutOfMemoryError is first thrown. (Introduced 
in 1.4.2 update 12, 6)

- Bob




  

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Re: Q: how to obtain notification when a WebApp is unloaded/reloaded?

[Bob Hall]

Godmar,

--- On Tue, 4/13/10 at 9:22 PM, Godmar Back god...@gmail.com wrote:

 
 What API function can be used to notify my application that
 it is about to
 be shut down, so that the thread in question can exit?
 
 First, is there a standard API that would work also in
 other J2EE containers
 besides Tomcat?
 

Have you tried implementing a ServletContextListener?

http://java.sun.com/products/servlet/2.3/javadoc/javax/servlet/ServletContextListener.html

- Bob

PS Tomcat is not a J2EE container.


  

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Re: Session Timeout - Filter Not Called

[Bob Hall]

Paul,

--- On Sun, 4/11/10, Paul Carroll pcarr...@nfmail.net wrote:

 I am using Tomcat 6.0 on Windows
 Server 2003.  It seems that when my session expires I
 am redirected to the login page which I would expect. 
 However, my filter is not called when I am redirected to the
 login page.  When I used Jetty as my web server, the
 call was intercepted by the filter before the user was
 presented the login page.  Does anyone know why this is
 the case?  The following is the sections of my web.xml
 that contains the filter info.
 
 filter
   filter-nameSessionTimeoutFilter/filter-name
     filter-classcom.mycompany.ui.filters.SessionTimeoutFilter/filter-class
       init-param
         param-namehome/param-name
         param-value/home.do/param-value
       /init-param
     /filter
 
     filter-mapping
       filter-nameSessionTimeoutFilter/filter-name
       servlet-nameaction/servlet-name
     /filter-mapping
 
     servlet
   servlet-nameaction/servlet-name
       servlet-classcom.mycompany.ui.web.ActionServlet/servlet-class
       init-param
         param-nameconfig/param-name
   /init-param
     /servlet

 servlet-mapping 
   servlet-nameaction/servlet-name
       url-pattern*.do/url-pattern
     /servlet-mapping
 
 
 My index.jsp contains 1 line which redirects to home.do.
 

Your filter is mapped to servlet-name action which is mapped to url-pattern 
*.do

Don't know about Jetty, but you will probably get the behavior you expect if 
you change the filter-mapping element to use:
  url-mapping/*/url-mapping (and remove servlet-name)

- Bob





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Re: Tomcat scalability setting - need help please

[Bob Hall]

Rendra,

--- On Thu, 4/8/10 at 5:28 PM, cinl...@gmail.com cinl...@gmail.com wrote:

 
 Do you have better way as how to transport this result to
 jsp? Please enlighten me. 
 

If you *really* need to serve _millions_ of rows of data to a user you
will need to implement some form of paging - the query results are
cached on the server and served to the user on a page-by-page basis when 
requested.

You mentioned that you implemented your own caching scheme. I suggest
you take a look at ehcache: http://ehcache.org/ It can be easily setup
to automatically cache to disk and purge stale data.

- Bob


  

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Re: Why cant I access a folder at root level which contains Java Script

[Bob Hall]

--- On Sat, 4/3/10 at 5:07 PM, Hassan Schroeder hassan.schroe...@gmail.com 
wrote:

 To: Tomcat Users List users@tomcat.apache.org
 Date: Saturday, April 3, 2010, 5:07 PM
 On Sat, Apr 3, 2010 at 1:57 PM,
 nzindian vj...@hotmail.com
 wrote:
 
  Im trying to use a javascript WYSIWYG editor in a JSP
 page.
 
  The JSP contains the following code to include the JS
 file:
 
  and it doesnt work,
 
 Look at the page source in a browser and see what it is.
 Why doesn't
 it work? Because it's wrong, *from the perspective of the
 user agent*.
 
 You can hard-code your context path or use JSTL e.g.
 c:url ...  or
 the corresponding JSP declaration to add your context path
 in front of
 the context-relative script directory path.
 

Or you can specify a *correct* relative path.

For example, if your .jsp is in jsp/ and your .js is in a parallel js/
folder you can use a relative path:

   src=../js/the-js.js

- Bob


  

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Re: RemoteHostValve for infinite domains?

[Bob Hall]

Dean,

--- On Wed, 3/31/10 at 10:53 PM, Dean Hiller dean.hil...@gmail.com wrote:

            
    allow=.*\.dev\.premonitionx\.com/
 

I haven't used this TC feature but it wouldn't hurt to try:

 allow=*\.dev\.premonitionx\.com /

- Bob




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RE: RemoteHostValve for infinite domains?

[Bob Hall]

--- On Thu, 4/1/10 at 5:52 AM, Caldarale, Charles R 
chuck.caldar...@unisys.com wrote:

 
 Please explain how that parses, since the allow string uses
 regular expression syntax, not wildcards (hence the need for
 the \. to match a period).
 

I can't, since it doesn't.

- Bob


  

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Re: Submitting a patch

[Bob Hall]

--- On Tue, 3/30/10 at 11:54 PM, ntwrkd ntw...@gmail.com wrote:

 I appreciate the ltmgtfy, but the
 search results actually didn't
 address my question.

The 1st Google hit, http://tomcat.apache.org/bugreport.html seems to
cover it:


Bug Fix Patch - A patch created using diff -u or svn diff which fixes the bug. 
(If you have found a bug fix which can be applied to the Apache Tomcat code)


- Bob


  

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Re: Submitting a patch

[Bob Hall]

--- On Tue, 3/30/10 at 9:56 PM, ntwrkd ntw...@gmail.com wrote:

 Is the a HOWTO located somewhere on
 the best way to submit a patch?
 

http://www.lmgtfy.com/?q=tomcat+patch+submit

- Bob


  

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RE: DB connection error -Tomcat 6 config

[Bob Hall]

--- On Thu, 3/18/10 at 1:56 PM, Caldarale, Charles R 
chuck.caldar...@unisys.com wrote:

 If you can, move up to 6.0.26 so we can all be looking at
 the same release.

From one of the OP's earlier messages:

 An error occurred at line: 68 in the jsp file: /chngctrl/chgctrl_details.jsp
 Type mismatch: cannot convert from Object to Context
 65:
 66: Connection connection = null;
 67: Context initCtx = new InitialContext();
 68: Context envCtx = initCtx.lookup(java:comp/env);
 69: // Look up our data source
 70: DataSource ds = initCtx.lookup(jdbc/myoracle);
 71:   
 
 
 SEVERE: Servlet.service() for servlet jsp threw exception
javax.naming.NameNotFoundException: Name jdbc is not bound in this Context
 at org.apache.naming.NamingContext.lookup(NamingContext.java:770)


Have you tried:

66: Connection connection = null;
67: Context initCtx = new InitialContext();
68: Context envCtx = (Context) initCtx.lookup(java:comp/env);
69: // Look up our data source
70: DataSource ds = (DataSource) initCtx.lookup(java:/myoracle);

   OR

70: DataSource ds = (DataSource) initCtx.lookup(java:jdbc/myoracle);


- Bob


  

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Re: DB connection error -Tomcat 6 config

[Bob Hall]

--- On Thu, 3/18/10 at 3:02 PM, Pid p...@pidster.com wrote:


 
   Context envCtx = initCtx.lookup(java:comp/env);
   DataSource ds = initCtx.lookup(jdbc/myoracle);
 
 should be:
 
   Context envCtx = initCtx.lookup(java:comp/env);
   DataSource ds = envCtx.lookup(jdbc/myoracle);
 
 no?
 

I was wondering why envCtx was discarded and was about to suggest:

  DataSource ds = (DataSource) initCtx.lookup(java:comp/env/jdbc/myoracle);

- Bob




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RE: DB connection error -Tomcat 6 config

[Bob Hall]

--- On Thu, 3/18/10 at 3:07 PM, Propes, Barry L barry.l.pro...@citi.com wrote:

 Yes, it should be.
 
 Not sure how that got jumbled as such but what I did have
 was:
 
 Connection connection = null;
 Context initCtx = new InitialContext();
 Context envCtx = (Context)
 initCtx.lookup(java:comp/env);
 DataSource ds = (DataSource)
 envCtx.lookup(jdbc/myoracle); 
 
 Tried other variations seen elsewhere on here as suggested.
 But still no dice.
 Odd - like I'd mentioned earlier, I can pass params through
 (DBUrl, user, password) and hit it, but not with a Context
 object.
 

Have you tried 'exploring' JNDI?

  NamingEnumerationNameClassPair list = initCtx.list(java:comp/env);

- Bob


  

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RE: DB connection error -Tomcat 6 config

[Bob Hall]

--- On Tue, 3/2/10 at 3:39 PM, Propes, Barry L barry.l.pro...@citi.com wrote:

 Then that should work...are you using
 DBCP with it?
 
  I wonder now...should I perhaps be using this jar?  
 ojdbc6.jar  ?
 
  Has anyone upgraded their Oracle drivers that's using
 TC 6 and JDK 1.6?
 
  If anyone has used these environments together and
 needed to make the change, please apprise.
 

We did *not* have to upgrade to ojdbc6; we are using:
  ojdbc14 (10.2.0.3.0)
  DBCP
  tomcat 6.0.20
  Java 1.6.0_16
  Oracle 10.2.0.4.0

- Bob




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Re: Tomcat context startup failed

[Bob Hall]

Andre,

--- On Wed, 2/17/10 at 1:06 AM, André Warnier a...@ice-sa.com wrote:

  The obvious error displayed from log is 
 java.lang.NoClassDefFoundError:
 org/apache/xerces/util/EncodingMap. First check whether the
 xerces jar containing mentioned class is in place. Try
 downloading new jar and again restart the tomcat services.
  

The NoClassDefFoundError can also be caused by having more than one
copy of a given class available due to its having been loaded by
separate class loaders.

The OP should check his Tomcat installation for multiple .jars that
contain the missing class.

 I am no great Java or Eclipse expert, but sometimes one
 wonders how explicit an error log message must be, that one
 would notice.
 
 In the submitted logfile, these two errors happen first :
 
  16-feb-2010 16.48.14
 org.apache.catalina.loader.WebappClassLoader
 validateJarFile
  INFO: validateJarFile(C:\Program
 Files\Apache\Tomcat55\webapps\Calzedonia2007\WEB-INF\lib\j2ee.jar)
 - jar not loaded. See Servlet Spec 2.3, section 9.7.2.
 Offending class: javax/servlet/Servlet.class
  16-feb-2010 16.48.14
 org.apache.catalina.loader.WebappClassLoader
 validateJarFile
  INFO: validateJarFile(C:\Program
 Files\Apache\Tomcat55\webapps\Calzedonia2007\WEB-INF\lib\javaee.jar)
 - jar not loaded. See Servlet Spec 2.3, section 9.7.2.
 Offending class: javax/servlet/Servlet.class
 
 Should not the first two errors above be attended to first
 ?
 

The offending .jar files were not loaded and can't contribute to any problems.

- Bob




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Re: Tomcat 5.5 org.apache.naming.ResourceRef cannot be cast to javax.sql.DataSource

[Bob Hall]

Steve,

--- On Mon, 1/25/10 at 10:50 PM, Steve Ryder sry...@jsrsys.com wrote:

 I understand what you mean by don't
 use, but I am not using it.
 What do I need to change so that it is not used?
 How might I track down the offending library?

What do you get when you type the following commands:

$  java -version

$  which java

- Bob



  

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Re: Polling and session timeout

[Bob Hall]

--- On Thu, 1/21/10 at 7:26 AM, Christopher Schultz 
ch...@christopherschultz.net wrote:

 
 If you access the session at all, it counts as a touch,
 thereby
 extending the life of the session. It's not possible to
 peek at the
 session without touching it AFAICT.

The Session timeout can be set when the response is being delivered
via Session's setMaxInactiveInterval() method without extending the life of the 
Session.

In a JSP:

 % session.setMaxInactiveInterval(inactiveTimeSecs); %

- Bob


  

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RE: Comet and thread binding

[Bob Hall]

--- On Thu, 1/7/10 at 12:02 AM, tbee t...@tbee.org wrote:

 
 Yes. But the problem with comet is that it may switch
 threads mid request;
 a request can be suspended, the thread freed up, and after
 a while the
 request is resumed, but by probably a different thread. So
 I cannot bind the
 request to the thread anymore.

I don't have much Comet experience but given that it can pause and resume
processing of a given request, would it be possible to bind your execution
context to that 'request' and re-bind it to the 'new' Thread when request
processing resumes?

- Bob


  

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Re: Load balancing questions

[Bob Hall]

--- On Wed, 1/6/10 at 7:54 AM, assan alhamoud hamoudas...@gmail.com wrote:

 any suggestion ?


Upgrade to a more recent version of JBoss/Tomcat, like JBoss 5.1.0.

- Bob


  

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RE: Comet and thread binding

[Bob Hall]

--- On Wed, 1/6/10 at 10:18 PM, tbee t...@tbee.org wrote:

 
 The issue is not the storage, but access to the storage.
 How would I, at any
 place in the execution, access it, without passing the
 context to each
 method.

Have you considered using ThreadLocal?

- Bob


  

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Re: Load balancing questions

[Bob Hall]

--- On Mon, 1/4/10 at 1:34 AM, Mark Thomas ma...@apache.org wrote:

 On 03/01/2010 11:09, assan alhamoud
 wrote:
  Happy new year to all ,
  
  I am using tomcat and JBoss.
 
 You'll need to explain that further. Why would you use
 Tomcat and JBoss
 for the same app. I would expect one or the other.
 
  Tomcat/5.0.26
 
 That is very, very old and has many known bugs and a number
 of security
 vulnerabilities. I'd strongly suggest moving to 5.5.28.

JBoss 3.2.5 has Tomcat 5.0 embedded (both very old versions)

JBoss 4.0.3 has Tomcat 5.5 embedded (both old versions)

Current version of JBoss is 6.0 not sure what version of Tomcat is embedded,
http://community.jboss.org isn't responding...

- Bob

 
  mod_jk/1.2.26
 
 Also worth upgrading to the latest version
 
 
 To get back to your original question, it looks like your
 app could
 benefit from some tuning. The hanging is likely to be
 caused by long
 running requests using up all the connections between httpd
 and Tomcat
 and/or poor mod_jk / AJP connector configuration. Since you
 haven't
 shown us this configuration it is hard to provide specific
 advice but
 generally I would suggest:
 - use JkOptions +DisableReuse (or sort out your timeouts
 but my
 experience has been disable reuse is simpler to configure
 and has
 similar performance)
 - turn on access logging for Tomcat
 - check any timeouts are consistent with your longest
 running requests
 - ensure the following are compatible
   - httpd processes/threads
   - Tomcat AJP connector threads
   - mod_jk connection pooling
 
 Mark
 
  
  Regards,
  
  2009/12/29 Mark Thomas ma...@apache.org
  
  On 29/12/2009 16:17, assan alhamoud wrote:
  Hello Mark  ,
 
  we are using apache  Server version:
 Apache/2.2.11 (Unix)
  we use  mod_jk.so module
  jboss-3.2.5
  Tomcat5
  and jrockit-jdk1.4.2_19
 
  at your disposal if you need more information
 
  Are you using Tomcat or JBoss?
  Tomcat version?
  mod_jk version?
 
  Mark
 
 
  Regards,
  Ghassan
 
  2009/12/29 Mark Thomas ma...@apache.org
 
  On 29/12/2009 15:21, assan alhamoud
 wrote:
  Hello All
 
   I have some questions and I hope
 to find answers about Load balancing
  .
 
  1- The first question , our DBA says
 that it not normal and no logic
   to
  have several instances of tomcat
 server on the same machine   with the
  same
   configuration , is this correct
 ?
  No. Your DBA is wrong.
 
  2- Each tomcat instance here can serve
 about 125 user , and I have more
  than
  this number on the server I got alot
 of problems and usually  the
  instance
  hang , is there anyway to get better
 performance from tomcat.
  That isn't a Tomcat problem, that is an
 application problem. The
  solution is to fix/tune your application.
 
     I am using now 3G memory
 for each instance and 120 for max_pool_size
  and
  750 maxThread
  It isn't clear what the 125 users refers
 to. Is it concurrent requests,
  is it concurrent sessions, is it
 concurrent users (assuming 1 concurrent
  user == more than 1 concurrent request).
 From these numbers the
  application seems very resource intensive.
 It does appear that it would
  benefit from some tuning.
 
  3- The most critical issue I had 
 , when one instance hangs , apache
  hangs
  and then all the application hangs
 because apache keep trying to
  connect
  to
  the hanged instance , Is there any way
 to force apache to bypass the
  hanged
  instance.
  Yes. But since you haven't told us the
 Tomcat version, httpd version nor
  how you are connecting httpd to Tomcat we
 can't tell you how to fix it.
 
  4- When instance of tomcat hangs , i
 forced to restart this instance (
  tomcat server )  the problem is
 GC can not free memory anymore
      Is there
 anyway to solve the problem instead of restarting the
  server.
  Yes. Work out if you have a memory leak or
 need more memory than is
  available. If it is a memory leak, fix it.
 If you need more memory
  either allocate it or tune your app so it
 uses less.
 
  5- at last sometimes I found that the
 same action repeated many times
  which
  means that apache sends the request
 more than one time to tomcat server
  ,could I have control over this
 behavior.
  Maybe, maybe not. If this behaviour is
 initiated by the user agent you
  need to manage this in your app. It could
 also be caused by the
  fail-over mechanism, in which case I refer
 you to my answer to point 3
  above.
 
  Mark
 
 
 
 
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Re: Connection Pool Exhausted

[Bob Hall]

--- On Mon, 8/17/09 at 11:38 AM, Kristen Walker kwal...@sbceo.org wrote:

 We had some help debugging the connection pool exhausted issue over the
 weekend and for now it seems that changing jdbcUsePool=true to
 jdbcUsePool=false stops the site from crashing due to connection pool
 issues.  We are going to investigate more to see why connection pooling
 isn't working like expected.

You can obtain a stack trace that should point to the offending code
by using the Deprecated log abandoned functionality in BasicDataSource:

   setLogAbandoned()
   setRemoveAbandoned()
   setRemoveAbandonedTimeout()

   
http://commons.apache..org/dbcp/apidocs/org/apache/commons/dbcp/BasicDataSource.html

There is some indication that logging of abandoned connections/statements
will continue in some form:

  http://wiki.apache.org/commons/DBCP

- Bob





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Re: All threads (200) are currently busy

[Bob Hall]

--- On Sun, 11/2/08 at 1:23 AM, Juha Laiho [EMAIL PROTECTED] wrote:
 
 What kind of situation did you have when you took the
 thread dump in
 the original request? Could you take a thread dump at a
 such point in
 time where you are actually waiting for a request to
 complete? That
 way, at least one of the threads would have to be somewhere
 in the
 slow section.

AD, you could add a filter that would log request/response handling
for all requests and include the thread Id and request parms info.
The log would be processed to identify requests w/o a response and
requests that took a long time to handle.

-Bob


  

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Re: file upload servlet

[Bob Hall]

--- 10:07PM Wed 27 Feb 2008 Kimberly Begley
[EMAIL PROTECTED] wrote:

 Hi - I'm trying to compile come java code to upload
 a file but am getting
 errors - it looks like it can't find the
 javax.servlet stuff to import and
 from what I've read online everyone talks about
 having the directory in the
 classpath but I have also read not to mess with my
 classpath - I'm trying to
 compile it from my
 catalina_home/webapps/appname/WEB_INF directory -
 does
 anyone have any suggestions? I'm sure it's obvious
 but I just can't see it.
 

The CLASSPATH warnings are associated with starting
Tomcat - not compiling your java code; servlet-api.jar
needs to be in your CLASSPATH.

You should also take a look at the commons fileUpload
project; http://commons.apache.org/fileupload/

HTH - Bob



  

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Re: Session expiration and AJAX issues

[Bob Hall]

--- 10:10AM Mon 25 Feb 2008, Adam Gordon
[EMAIL PROTECTED] wrote:

 Storing the date/time a user logs in on
 the session is 
 probably useful, but our problem is that we want to
 forcefully log the 
 user out if there's no human present at the computer
 and the AJAX tasks 
 keep a user's session active indefinitely, whether
 or not they mean it to.
 

If there's a user input side to the AJAX tasks, would
it be possible for the AJAX task time interval to
increase over time w/o user input? Eventually, this
would lead to a session timeout.

-Bob


  

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Re: Session expiration and AJAX issues

[Bob Hall]

--- 2:09PM Mon 25 Feb 2008 Adam Gordon
[EMAIL PROTECTED] wrote:

 Adding a time decay in our timer task is an
 interesting idea and were it 
 not for IE's JavaScript counting ineptness, that'd
 probably work.
 

The server could track the requests and provide an
updated delay time for the timer task if the browser
isn't reliable.

-Bob


  

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RE: FW: TOMCAT 5.0.28 stability

[Bob Hall]

--- Dwight Farris [EMAIL PROTECTED] wrote:

 Thanks for responding; I see the following lines
 recurring often in the
 Catalina_out file:
 
 372yes
 In the for loop on myUsers2 variables in for loop:
 374yes In ctx == null
 BEFORE THE QUERY IN Cohorts getName 
 
 JVM version - 1.4.2_04-b05
 
 Dwight 
 
 --- Dwight Farris [EMAIL PROTECTED] wrote:
 
  Quick question about memory allocation - could the
  issue described below be
  a product of the settings in the following startup
  allocation:
  
   
  
  CATALINA_OPTS=$CATALINA_OPTS -Xms256m
  -Xmx1024m
  
 
 A couple of questions:
 
  - Any Exceptions / Errors in the Tomcat log
 file(s)?
 
  - What version of Java?
 
 I usally set starting and max memory the same; read
 somewhere that garbage collection is more efficient
 when that is done.
 
 If you are running Java 5+ you may be running out
 of PermGen space - check the log file(s) and the
 archives for recommendations.
 
 -Bob
 

If your webapp(s) really need a gig of memory,
I sugggest changing CATALINA_OPTS

 CATALINA_OPTS=$CATALINA_OPTS -Xms1024m -Xmx1024m

Looks like you are using unix/linux.  Did you 'grep'
for Exception and Error in catalina.out?

The Cohorts getName() messages don't look familiar
to me.  Is there a Cohorts class in one or more
of your webapp's?

-Bob



 

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RE: TOMCAT 5.0.28 stability

[Bob Hall]

--- Dwight Farris [EMAIL PROTECTED] wrote:

 Thanks for your response; I will look into the SQL
 code
 
 Dwight
 
 -Original Message-
 From: gb1071nx
 [mailto:[EMAIL PROTECTED] 
 Sent: Tuesday, March 27, 2007 9:47 AM
 To: Tomcat Users List
 Subject: RE: TOMCAT 5.0.28 stability
 
 This is certainly not a tomcat stability problem,
 it's the application
 that has been coded poorly
 
  syntax to use near 's Time Management workshop
 
 You've got some SQL code somewhere that looks like
 this: 
 
 String sql = INSERT INTO table (foo) VALUES(' +
 fooVar + ');
 
 And you're inserting data (fooVar variable contains)
 
 Manager's Time Management workshop
 
 Which results in SQL that looks like: 
 
 INSERT INTO table (foo) VALUES('Manager's Time
 Management workshop')
 
 Notice how the single quote results in mal-formed
 SQL? 
 

Dwight,

Take a look at JDBC's PreparedStatement and use
the setString() method to set the Manager's Time
Management workshop value.

This will also serve to avoid SQL injection.

-Bob


 

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Re: can a web app discover its Service?

[Bob Hall]

--- Paul Singleton [EMAIL PROTECTED] wrote:

   I want to deploy the same war into different
 (5.5)
   Services (e.g. test and live), and want it
 to
   discover where it is and behave differently.
 
 I didn't explain *why* we want to do this, because I
 don't want to spend time debating it with folk who
 prefer to do it the other way ;-)
 
 But here are a couple of plus points for discovery
 and self-configuration (DSC):
 
 1) our dev, test and demo configurations behave in
 convenient ways we don't *ever* want in our live
 apps; with DSC we are more confident that, even if
 deployment misteaks are made, we won't be
 embarrassed
 

Paul,

If your app talks to a database, have you considered
using a database table to map IP's to deploy modes?

-Bob


 

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Re: Please Help: Tomcat 5.5.17 SSL Help

[Bob Hall]

--- Blake Smith [EMAIL PROTECTED] wrote:

 I have uncommented the
 section within server.xml
 and pointed it to the location of the keystore, and
 it's password.  I even
 changed the port from 8443 to 443 and the
 corresponding forwarding value for
 8080.

Is Tomcat listening on port 443?

$ netstat -an | grep 443

-Bob


 

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Re: how to make a scheduled event on tomcat

[Bob Hall]

--- Gaurav Kushwaha [EMAIL PROTECTED] wrote:

 I would like to have a method that will run
 every-so-often. Lets say once in
 2 weeks. How do I do that in Tomcat ?
 
 Thanks,
 Gaurav Singh Kushwaha

Gaurav,

Take a look at quartz:

Quartz is an open source, job scheduler for
 integration with stand-alone java applications and
 full-scale J2EE applications. Advanced features
 include clustering and participation in container
 managed transactions.

https://quartz.dev.java.net/

-Bob


 

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Re: Daylight Savings 2007

[Bob Hall]

--- John Flores [EMAIL PROTECTED] wrote:

 Do you know where I can find some documentation on
 this subject?
 
 

John,

On the JRE side, see:

http://java.sun.com/developer/technicalArticles/Intl/USDST/

-Bob


 

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Re: Is Tomcat still the reference implementation for Servlets and JSP?

[Bob Hall]

With regard to Servlet spec 2.5 see:

http://tomcat.apache.org/tomcat-6.0-doc/index.html

-Bob

--- Tim Funk [EMAIL PROTECTED] wrote:

 Tomcat isn't used in the RI for 2.5.
 
 Glassfish is a fork of tomcat. So you'll notice many
 things the same.
 
 -Tim
 
 Jon Miller wrote:
  Hi all,
  
  Does anyone know if Tomcat is still the reference
 implementation for 
  Servlets and JSP? I thought the Servlets 2.5 spec
 was finalized in May. 
  Why is it taking so long for a release version of
 Tomcat that implements 
  Servlets 2.5? Also, I don't understand how
 Glassfish can support the new 
  specs when it embeds Tomcat.
 

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Re: urgent : unsubscribe please

[Bob Hall]

Christian,

To unsubscribe, e-mail: [EMAIL PROTECTED]

which is included (near the end) in every message from the list.

-Bob

- Original Message 
From: Christian Mennequin [EMAIL PROTECTED]
To: Tomcat Users List users@tomcat.apache.org; [EMAIL PROTECTED]
Cc: Tomcat Users List users@tomcat.apache.org; [EMAIL PROTECTED]
Sent: Tuesday, January 9, 2007 11:38:51 PM
Subject: urgent : unsubscribe please

Cordialement,

Christian Mennequin
Barclays IRCB / DI
183 avenue Daumesnil  75575 Paris Cedex 12
Phone :  0033 (0)1.55.78.43.05
Email   : [EMAIL PROTECTED]

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Re: What a wonderfull world ..

[Bob Hall]

And thanks to George Weiss  Bob Thiele for writing it and
and to Louis 'Satchmo' Armstrong for performing it.

http://solosong.net/wonderful.html

-Bob

- Original Message 
From: Almir Kazazic [EMAIL PROTECTED]
To: Tomcat Users List users@tomcat.apache.org
Sent: Saturday, December 30, 2006 11:16:04 AM
Subject: Re: What a wonderfull world ..

thanks

On 12/30/06, Vijay Hatewar [EMAIL PROTECTED] wrote:
 WHAT A WONDERFUL WORLD

  I see trees of green, red roses too
  I see them bloom for me and you
  And I think to myself, what a wonderful world

  I see skies of blue and clouds of white
  The bright blessed day, the dark sacred night
  And I think to myself, what a wonderful world

  The colours of the rainbow, so pretty in the sky
  Are also on the faces of people going by
  I see friends shakin' hands, sayin' How do you do?
  They're really saying I love you

  I hear babies cryin', I watch them grow
  They'll learn much more than I'll ever know
  And I think to myself, what a wonderful world
  Yes, I think to myself, what a wonderful world

  Oh yeah

  Happy new Year .. Enjoy life ..Love thyself and others


 Thanks  Regards,

  Vijay G Hatewar
 |Member of Technical Staff - TQE|Persistent Systems Pvt, Ltd., Pune.|
 |Ph: +91 .20 .3023.5331| Mobile: +91.9890678168| @:
 [EMAIL PROTECTED]| mailto:[EMAIL PROTECTED]


 DISCLAIMER
 ==
 This e-mail may contain privileged and confidential information which is the 
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Re: New session PER REQUEST

[Bob Hall]

Maurice Yarrow wrote:

 I'm fronting tomcat 5.0.28 with apache 2.0.59 through mod_proxy.
 I am not seeing loss of session persistence:  here are the values
 of HttpSession.getId(), as seen in a typical succession of the
 servlets, and also, one of the JSP's:

  SelectPubImgSetServlet: 
 thisUser.getId()=303D62BDCC86A5BC6D8218364F513A09
  DisplayPubGalleryServlet: 
 thisUser.getId()=303D62BDCC86A5BC6D8218364F513A09
  GetPubSmallServlet: thisUser.getId()=303D62BDCC86A5BC6D8218364F513A09
  PassWordCheckServlet: thisUser.getId()=303D62BDCC86A5BC6D8218364F513A09
  SelectPhotoClub.jsp: thisUser.getId()=303D62BDCC86A5BC6D8218364F513A09
  EditGalleryServlet: thisUser.getId()=303D62BDCC86A5BC6D8218364F513A09

 I can't, of course, tell you why you are not seeing persistent session 
 id's, but I believe
 the above shows that this is normal for my webapp.  I do not believe 
 that I am doing
 anything unusual, here, just the usual

  HttpSession thisUser = GetPubSession( request, response, true );

 In fact, for the login/https side of my webapp, I rely on this to 
 determine
 authorization.  Note that going from http to https, the same session is
 persisted, going the other way, one cannot rely on this - an artifact of
 the security specification in J2EE).

 Maurice Yarrow

Maurice, thanks for the concientous effort.

However, your responses should be addressed to Darren Hall.
(no relation that I'm aware of)

-Bob Hall









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RE: New session PER REQUEST

[Bob Hall]

--- Darren Hall [EMAIL PROTECTED] wrote:

 Peter,
 You are correct. When hitting Tomcat directly, the
 session remains intact.
 When using mod_proxy to forward requests to Apache
 the session is lost.
 Is this a common issue? How can I go about
 correcting this?
 
 Thanks
 - D

I don't have any experience with mod_proxy.
Have you tried mod_jk?

-Bob

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RE: Database connection pooling in Tomcat 5.5

[Bob Hall]

--- Darren Hall [EMAIL PROTECTED] wrote:

 Further progress...
 When I connect to the database directly (not using a
 connection pool) and
 specify the same username and password below, the
 code executes fine. When I
 try to do the context lookup and connect to the
 database via the connection
 pool, I get the invalid username/password; logon
 denied error. This leads
 me to believe the error is in my configuration (or
 my code).
 What am I doing wrong here??

Is the DB url *exactly* the same in the two cases,
DBCP and non-DBCP?

-Bob

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Re: How to disable search machines?

[Bob Hall]

--- Zsolt [EMAIL PROTECTED] wrote:

 Hi,
 
 I see that google and msn searches on our pages
 (tomcat-5.5.17). How can I
 disable that?
 
 Zsolt
 

Zsolt,

See go away example on
http://www.robotstxt.org/wc/norobots.html

- Bob

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Re: Does using Kerberos with Tomcat reduce my security?

[Bob Hall]

--- P. Douglas Reeder [EMAIL PROTECTED] wrote:

 After some effort, I've managed to set up a
 JAASRealm that draws its
 account information from our Kerberos server
 (Krb5LoginModule,
 connecting to Open Directory on OS X Server 10.3.9).
 
 One of the key security properties of Kerberos is
 that passwords are
 never sent over the network, even in encrypted form.
  However, since
 users interact with Tomcat using HTTP, I think
 passwords are sent in
 the clear, if using Basic authentication and
 encrypted if using Digest
 authentication.  In either case, it would appear
 that I'm not
 preserving the level of security I had with the
 Kerberos setup before.
 
 So, would it make more sense to use account
 information from our Linux
 machine (JAASRealm with UnixLoginModule), since that
 is sent over the
 network in encrypted form when users login via ssh? 
  Is Digest
 authentication about as secure as SSH?
 
 If not, what's the easiest kind of Realm to set up
 which stores
 passwords in an encrypted form, for a half dozen
 users?
 (UserDatabaseRealm is right out.)
 

Doug,

Can your app use HTTPS instead of HTTP?

If yes, then you can (which you may already know)
add a transport-guarantee / element to your app's
web.xml.

-Bob



   security-constraint
web-resource-collection
 
web-resource-nameOSUstudent/web-resource-name
  descriptionStudent access/description
  url-pattern/student/*/url-pattern
  http-methodHEAD/http-method
  http-methodGET/http-method
  http-methodPOST/http-method
  http-methodPUT/http-method
  http-methodDELETE/http-method
/web-resource-collection
auth-constraint
  descriptionThese are the coarse-grained roles
that
enable a subject to pass the JAAS login stack.
  /description
  role-nameOSUActiveStudent/role-name
/auth-constraint
user-data-constraint
  descriptionThis app will use https in the
/student subtree/description
 
transport-guaranteeCONFIDENTIAL/transport-guarantee
/user-data-constraint
  /security-constraint


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Re: [OT] how to over come toomanyconnection error when communicatingMYSQL

[Bob Hall]

--- prakash shanmugam [EMAIL PROTECTED] wrote:

 hai all,
 i have one major issue in my project..
 My project is developed using jsp,servlets in
 Tomcat5 with MySql as
 database.. i am using type1 driver
 My project is now used by end users in intranet..
 When multiple users are accessing at the same time
 ,its throwing too many
 connections exception at sometimes . And at
 sometimes its dispaying error as
 Operation not allowed after ResultSet is closed
 i dont know how to rectify this .. Can anybody help
 me to overcome this..

Prakash,

Your code has to be reworked to be usable.
As written, users are stepping on one another
in too many places to list.

You should take a look at a fairly robust
example and rewrite your code accordingly.

Guidelines: (see example)
 - Connection, Statement, ResultSet vars must
   have method scope
 - obtain, use, and close a Connection
   in a single method
 - after your application is successfully supporting
   multiple users look into using a Connection pool
   to improve performance

Example:
http://java.sun.com/developer/onlineTraining/Database/JDBC20Intro/exercises/Example2/solution/Report4J.java

-Bob
  

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Re: [OT] decompile java class

[Bob Hall]

Tomcat wrote:

--- Tomcat [EMAIL PROTECTED] wrote:

 Thanks Mohsen for your reply, but I can not download
 and use jad or
 other decompilers, please let me know if you know
 how to decompile
 the java class that contains another class.
 
 Thanks

$ javap -help
$ javap -classpath

And a proper name would be nice; does your boss
call you Tomcat?

-Bob

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Re: Tomcat shutdowns unexpectedly - Please help

[Bob Hall]

--- Arunan Kannan [EMAIL PROTECTED] wrote:

 I have found the solution to this problem.
 The problem is when we start a tomcat in solaris
 from a user shell (like
 telnet) , then when the shell quits, the tomcat
 might get stopped.
 The bourne shell gives the shutdown signal when the
 shell quits, to kill the
 tomcat process.
  The solution to this problem is we should
 start/stop tomcat using C-shell.

Arunan,

Your Tomcat server was stopping because the
process running it received a SIGHUP signal
when the login shell exited.  This behavior
is configurable and the setting is usually
governed by security policy since you might
not want to allow all users to launch processes
that continue after they logout.

Look at the man page for 'nohup' for more info.

BTW, 'ssh' is preferred over 'telnet' for security
reasons.

-Bob

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Re: Tomcat Crashing -- how do I read the resulting hs_err_pid11598.log?

[Bob Hall]

--- Kim Albee [EMAIL PROTECTED] wrote:

 That's all interesting, but we're not running Fedora
 Core 4 -- we are
 running Fedora Core 3.  Secondly, I've got this
 identical environment
 running in production without incident. This
 environment on this server
 used to run without incident until we had to
 replace the memory, and now
 it crashes -- same config I've got running fine in
 other places -- which is
 why I'm trying to figure out what's different.  What
 I know is different is
 that this server has 4GB of RAM when all of our
 other servers have 2GB of
 RAM, so that is a difference.
 

Kim,

Don't know off hand what the utilities are, but I
suggest performing some memory checks on the 4 Gb
box; there may be a problem with the new RAM.

-Bob

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Re: Database Connection Error Cannot create PoolableConnectionFactory

[Bob Hall]

Cameron,

You wrote:

 I have a newly installed and configured Ubuntu
 server running
 Tomcat5.5 and Mysql 5.0. This server was created in
 an attempt to
 migrate from a Red Hat server in a similar
 configuration, running the
 exact same webapp. Most of the
 configuration/classpath differences
 between the two platforms have been ironed out.
 
 The Problem:
 
 When our webapp trys to connect to the database on
 localhost, an exception
 
 'java.security.AccessControlException: access denied
 (java.net.SocketPermission localhost resolve)'
 
 is generated.
 

Looks like the OS is unable to resolve localhost.
Does the ubuntu server have the following in its
/ect/hosts file?

127.0.0.1localhost

-Bob

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Re: Database Connection Error Cannot create PoolableConnectionFactory

[Bob Hall]

Cameron,

 For some reason tomcat can't connect to the database
 and create a
 connection pool, even though a normal client can
 connect just fine. I
 even wrote a small java program to connect using
 JDBC, in case that
 was the problem. I used the same parameters given to
 tomcat and again,
 it works just fine.
 

A couple of questions:

Are you running the small java test program on the
same host as the Tomcat server?

Assumming that different usernames are being used,
did you try running the test program as the user
that is running Tomcat on the Tomcat host?

-Bob

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Re: Programmatic Security

[Bob Hall]

--- John Caron [EMAIL PROTECTED] wrote:


 I guess im fishing around for anyone who has thought
 about or 
 implemented programmatic security instead of / in
 addition to 
 container managed security.
 
 Thanks for your time.
 

John,

You might want to consider Turbine instead of
rolling your own programmitic security.
If the whole package doesn't appeal to you, the
framework can provide a starting point.

http://jakarta.apache.org/turbine/

-Bob



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Re: log4j in webapp hanging Tomcat?

[Bob Hall]

--- Avi Deitcher [EMAIL PROTECTED] wrote:

 The simple classes (a JSF backing bean and a filter)
 are set to use
 either commons-logging or log4j directly (I tried
 both). In either case,
 the moment that I uncomment any category line and
 one of my classes (the
 filter or the bean) calls log.debug(some message),
 Tomcat freezes
 entirely. This is true whether I use log4j directly
 or commons-logging
 in my classes, and whether or not I comment or
 uncomment the first
 log4j.rootCategory line in log4j.properties. I get
 some output from the
 appender matching the pattern, and then freeze. I
 cannot access any
 context; I cannot use the manager; the only thing I
 can do is kill the
 Tomcat process.
 
 I am at wit's end with this; it took literally days
 to narrow down that
 it was log4j's activation doing it.
 

Avi,

You didn't mention which OS you are using.  If
it's *nix you may be able use 'truss' to get info
on exactly what Tomcat is doing when it freezes.
BTW, a google search produced several hits for
linux impl's of solaris' truss command.  My
guess is that you'll find that Tomcat is stuck
in a loop.

HTH,
Bob

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Re: log4j in webapp hanging Tomcat?

[Bob Hall]

--- Bob Hall [EMAIL PROTECTED] wrote:

 --- Avi Deitcher [EMAIL PROTECTED] wrote:
 
  The simple classes (a JSF backing bean and a
 filter)
  are set to use
  either commons-logging or log4j directly (I tried
  both). In either case,
  the moment that I uncomment any category line and
  one of my classes (the
  filter or the bean) calls log.debug(some
 message),
  Tomcat freezes
  entirely. This is true whether I use log4j
 directly
  or commons-logging
  in my classes, and whether or not I comment or
  uncomment the first
  log4j.rootCategory line in log4j.properties. I get
  some output from the
  appender matching the pattern, and then freeze. I
  cannot access any
  context; I cannot use the manager; the only thing
 I
  can do is kill the
  Tomcat process.
  
  I am at wit's end with this; it took literally
 days
  to narrow down that
  it was log4j's activation doing it.
  
 
 Avi,
 
 You didn't mention which OS you are using.  If
 it's *nix you may be able use 'truss' to get info
 on exactly what Tomcat is doing when it freezes.
 BTW, a google search produced several hits for
 linux impl's of solaris' truss command.  My
 guess is that you'll find that Tomcat is stuck
 in a loop.
 
 HTH,
 Bob
 

Looks link linux's equivalent of 'truss' is 'strace'.

-Bob

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Re: job offering for a web application developer in switzerland

[Bob Hall]

--- Leon Rosenberg [EMAIL PROTECTED]
wrote:

 and what exactly is ment by leistungsbezogene
 Entlöhnung ?
 
 leon
 

According to Babblefish:

achievement-referred remuneration

-Bob

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Re: Running Multiple Jboss Instance on a single Windows Box

[Bob Hall]

--- Sanjeev Kumar Bhat, Noida [EMAIL PROTECTED] wrote:

 Is it possible to run multiple instances of Jboss
 Server on a single win2k box?
 
 Thanks
 
 Sanjeev
 

Yes.

You should use server/service-bindings.xml to
orchestrate
port # assignment.

-Bob

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Re: Urgent...

[Bob Hall]

--- Christian Jean [EMAIL PROTECTED] wrote:

 I've been successfully using various version of
 Tomcat for serveral years
 with the same certificate... all worked well.
 
 I wanted to test the stability of Tomcat 5.5.17, so
 I installed in on the
 same server but renamed all the 8XXX ports to 9XXX
 so that it could be run
 in parallel to the 5.0.28 server.  When I started
 the 5.5.17 server, I
 noticed that I could not get the HTTPS (SSL) pages
 working correctly.  The
 normal HTTP pages were working correctly though.
 
 Then the real trouble started!!  I could not load
 any HTTPS pages from any
 server thereafter...
 
 The SSL pages DID work on the 5.0.28 prior to
 testing the 5.5.17, but now
 HTTPS no longer works at all.  When trying to load
 the ssl pages from the
 browser it says nothing... just a timeout occures.
 
 The logs don't show a single trace that something (a
 page) was not properly
 sent.
 
 Using 'netstat -ln' shows that the ports are
 successfully bound.
 
 The only message I'm capable of getting is with
 lynx:
 
  bash   lynx https://localhost:8443
 
 Will display the following line:
 
   SSL error:Can't find common name in
 certificate-Continue? (y)
 
 Appart from installing and running server 5.5.17,
 nothing has changed on my
 server, so its weird that my production 5.0.28
 should stop working because
 of this test???
 

Christian,

You mention that no other changes were made on
the server, but did you happen to also install
jdk/jre 1.5 and/or change JAVA_HOME?

-Bob

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Re: Retrieve certain session data inside a servlet

[Bob Hall]

--- Carlos Alonso Vega [EMAIL PROTECTED] wrote:

 
 I am trying to obtain data about a session inside a
 servlet, the code 
 seems to be simple as
 
 localSession =
 Ctx.getManager().findSession(sessionId);
 
 My problem is that I do not know how to obtain the
 Ctx object from a 
 request (HttpServletRequest)
 
 Thanks in advance
 

Carlos,

To obtain the HttpSession for the current request:

HttpSession sess = req.getSession();
OR
boolean create = false;  (or true)
HttpSession sess = req.getSession(create);

HTH,
Bob

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Re: Retrieve certain session data inside a servlet

[Bob Hall]

Carlos,

The javadoc indicates that the methods are deprecated,
but it looks like you could use:

HttpSession mySess = request.getSession();

// getSessionContext() is deprecated
HttpSessionContext sessCtx =
mySess.getSessionContext();

// getSession(String) is deprecated
HttpSession otherSess =
sessCtx.getSession(otherSessId);

-Bob

--- Carlos Alonso Vega [EMAIL PROTECTED] wrote:

  Thanks for the reply. My problem is that the
 session info I need is not 
 of the session that makes the request. I need to
 check other sessions in 
 the same context.  I can use the request because it
 is in the same 
 context, so the manager is the same.

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Re: Changing tomcat's group [OT]

[Bob Hall]

--- Aria Bamdad [EMAIL PROTECTED] wrote:

 On Thu, 27 Apr 2006 20:09:44 -0700 (PDT) Bob Hall
 said:
 
 How about making each application owner a member
 of the 'tomcat' group.
 
 Bob, making each app owner a member of the tomcat
 group will allow different
 app owners to look at each other's files.  For
 security, I need to keep each
 applications files secure from the other.  So, I
 can't add each owner to the
 tomcat group.  Even so, the application owner needs
 to have read/write access
 to the files created which makes matters more
 complicated.
 
 What I need is to either have tomcat create the
 files using the appropriate
 group by maybe having tomcat do a 'newgrp' before
 executing an application
 request.  Is this possible?  Is there a way to do a
 post- or pre- script
 before running a request in tomcat?
 
 Thanks.
 Aria.
 


The 'newgrp' command starts another shell within
the current one, whcich won't work AFAIK.

However, you should still be able to accomplish what
you want.

- For each app-dir -

# 1. Ensure all files/dirs  have correct owner 
group:

$ chown -R app-owner app-dir
$ chgrp -R app-owner-group app-dir

# 2. Ensure all file/dirs are group writeable:

$ chmod -R g+w app-dir

# 3. Set group sticky-bit for app's dirs:

$ find . -type d | xargs chmod -R g+s app-dir

Step 3 should force all files/dirs created in
an app-dir to have the specified app-owner-grp.
This will allow an app-owner full access to files
created by the tomcat user.

You'll also need to require that all app owner
accounts have their umask set to 002.  Otherwise
an app-owner account could create a file that would
be read-only for the tomcat user which might produce
problems when running Tomcat.  ($ umask 002)

-Bob

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Re: Changing tomcat's group

[Bob Hall]

--- Aria Bamdad [EMAIL PROTECTED] wrote:

 
 Solved!!!
 
 The solution is to use the linux group sticky bit to
 force any files
 created in a directory (and subdirectories) to have
 the same group
 as the parent.  For example let's say there are two
 applications,
 one for accounting and one for payroll.  If you
 create a directory
 for accounting and one for payroll, each belonging
 to their own
 group and tomcat belonging to both groups, then
 tomcat can read the
 files in both directories but when it creates a
 file, it ends up
 being tomcat user and tomcat group.  If you change
 the settings on the
 two directories as follows:
 
 chmod g+ws /accounting
 chmod g+ws /payroll
 

Aria, good to know the problem is solved.
Wish I had seen your latest post before replying
a few minutes ago.

To set the group sticky bit on dirs from 'app' down:

$ find ./app -type d | xargs chmod g+s

-Bob

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Re: Changing tomcat's group [OT]

[Bob Hall]

--- Eric Haszlakiewicz [EMAIL PROTECTED] wrote:

 On Thu, Apr 27, 2006 at 04:55:40PM -0400, Aria
 Bamdad wrote:
  I have several applications running in different
 directories.  Each
  application is owned by a different linux
 owner/group.  In order for
  Tomcat to be able to read these files to serve
 them, the Tomcat has
  as it's secondary groups, the group names of each
 application.
  
  The problem I am having is that when any of the
 applications create
  a file, the file created has the owner/group
 tomcat:tomcat which
  prevents the application owner from accessing the
 file directly
  (as a logged in linux user).
  
  How do others address this problem? Is there a way
 to have Tomcat
  dynamically switch 'group' before serving somthing
 from each application?
 
   If the files are in separate directories, it might
 work to just
 make sure the directory is owned by the appropriate
 group.  Under NetBSD
 that seems to ensure that any files created are
 owned appropriately,
 but I'm not sure how it works under linux.  You
 might need to do a
 chmod g+s on the directory.
 
 eric
 
 

How about making each application owner a member
of the 'tomcat' group.

Then set the group permissions as read-only on
the dirs/files:

$ chmod -R g-w app-dir

If you want to share the ability to write to
a given app's dirs/files then you need to do more:

# allow members of tomcat group to write
$ chmod -R g+w app-dir

# set group sticky-bit
$ find . -type d | xargs chmod -R g+s app-dir

You'll also need to somehow require that all
app owners set their umask to 002 so that files
and dirs created by them in the tomcat group app
dirs are writeable by other tomcat group members.

$ umask 002

Overall, it's much simpler if the app owners
only have read rights.

-Bob

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Re: index.jsp not showing after successful installation

[Bob Hall]

--- balaraju mandala [EMAIL PROTECTED]
wrote:

 Hi Bob,
 
 Thanks for your response.
 
 catalina.out file is not ending with any error
 messages. It is showing that,
 Tomcat started successfully with some millesecond
 time. I am using 8080 port
 for Tomcat. I am entering http://myip:8080 in the
 browser. But simple error
 page is displaying. No 404 or any special errors
 from Tomcat.
 
 Regards,
 Bala.
 

Bala,

Your catalina.out should contain something like:

INFO: Starting Coyote HTTP/1.1 on http-8080

It may also contain something like:

INFO: JK2: ajp13 listening on /0.0.0.0:8009

grep for Coyote HTTP and ajp13 listening in
your catalina.out and let us know what you find.
You should also grep for Exception in catalina.out.

Some more questions:

1. What browser are you using?

2. Is the browser running on the same system that
   is hosting Tomcat?

3. Is there a firewall in place on the linux
   box that is hosting Tomcat?

4. What exactly is the text on the simple error
page?

-Bob

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Re: index.jsp not showing after successful installation

[Bob Hall]

--- balaraju mandala [EMAIL PROTECTED]
wrote:

 Bob,
 
 The ending messages in catalina.out are --
 
  Apr 10, 2006 1:48:20 AM
 org.apache.coyote.http11.Http11Protocol start
 INFO: Starting Coyote HTTP/1.1 on http-8080
 Apr 10, 2006 1:48:20 AM
 org.apache.jk.common.ChannelSocket init
 INFO: JK2: ajp13 listening on /0.0.0.0:8009
 Apr 10, 2006 1:48:20 AM org.apache.jk.server.JkMain
 start
 INFO: Jk running ID=0 time=0/24

config=/home/wizon555/Softwares/tomcatsoftware/jakarta-tomcat-5.0.28
 /conf/jk2.properties
 Apr 10, 2006 1:48:20 AM
 org.apache.catalina.startup.Catalina start
 INFO: Server startup in 2742 ms
 
 and there are no 'Exceptions' in catalina.out. I am
 using Internet Explorer
 6. I am connecting to remotly located system, where
 i installed Tomcat and
 trying to access it from my System. There is no
 Physical firewall present
 for that server, a software was installed, but
 though i disabled software
 firewall result is same.
 
  -Bala
 

Bala,

Looks like a clean startup of Tomcat - good.

What is the text of the error message that appears
when you attempt to reach Tomcat from IE6 on a remote
host?

Can you run a browser on the linux host and attempt
to access Tomcat via: http://localhost:8080  ?

-Bob


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Re: index.jsp not showing after successful installation

[Bob Hall]

--- balaraju mandala [EMAIL PROTECTED]
wrote:

 Hi Nic,
 
 Its me again, You suggested to check weather Tomcat
 was started as service,
 i am starting Tomcat by issuing a command at SSH
 (tomcat/bin/./startup.sh).
 Is this is correct one to start Tomcat as service or
 i have to do another
 way to start tomcat as service.
 
 regards,
 Bala
 

Bala,

Using startup.sh on yuour linux box should be fine.

Does catalina.out end with a report of the port(s)
that Tomcat is using?  WHich ports?

What URL are you entering into the browser?

What response are you getting in the browser?
timeout, Http404 ?

-Bob




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RE: session GC

[Bob Hall]

John,

The simple and intuitive solution that Hansen
provided can be used to log when an HttpSession
instance is GC'd since the objects that instance
holds *unique* references to will also be GC'd.

So, the question becomes, which classes are
holding references to HttpSession objects and
preventing them from being GC'd?

We used a tool years ago to analyze the heap when
we were tracking down some elusive memory issues.
Heap Analysis Tool: https://hat.dev.java.net/

-Bob

--- John Powers [EMAIL PROTECTED] wrote:

 thats not what i'm talking about.
 
 after a session times out...  tomcat removes it from
 its list of sessions.  a session listener will show
 that it leaves.
 
 however, a GC then needs to see if its available for
 collection on the next go around of the GC.if i
 force the GC, or whenever it decides to happen, my
 objects under the session aren't being collected.
 
 so then.   how can you know when the session itself
 is collected (not timed out)
 
 
 
 -Original Message-
 From: Farrow, Marc [mailto:[EMAIL PROTECTED]
 Sent: Fri 3/31/2006 5:36 PM
 To: Tomcat Users List
 Subject: RE: session GC
  
 easiest way to make sure they are GC'd is to set
 session time-outs.
 
 -Original Message-
 From: John Powers [mailto:[EMAIL PROTECTED]
 Sent: Friday, March 31, 2006 6:07 PM
 To: Tomcat Users List
 Subject: session GC
 
 
 How do you know when a session is garbage collected?
 You can write a sessionlistener for when it gets
 deleted out of tomcat,
 but after that, when do you know if its garbage
 collected?
 
 I currently do not think my sessions are being
 collected.   Within a day
 500M of memory get eaten up and I can't collect them
 manually even.  So
 I want to know when/if the sessions are being
 collected.
 
 If I wrote a subclass to httpsession, how could get
 tomcat to use it?


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Re: Download file Problem - 404 error

[Bob Hall]

--- DEEPA M N [EMAIL PROTECTED] wrote:

   Hi 
   I m using Jdk1.5 and Tomcat 5.0.28 for my proj. I
 have written a code which can download a file from
 the server. The code is compiling properly. I pasted
 the .class file in the
 webapps/DownloadFile/WEB-INF/classes/  
   Also i hav written web.xml in the WEB-INF folder. 
   After running a appln, i get 404 Resource not
 found error.

   Before i hav worked on servlet and tomcat, i was
 not getting such issues before. But now i m facing
 such type of issues, i need to solve it as early as
 possible. Here is a web.xml lines:

   ?xml version=1.0 encoding=ISO-8859-1?
   !DOCTYPE web-app
 PUBLIC -//Sun Microsystems, Inc.//DTD Web
 Application 2.3//EN
 http://java.sun.com/dtd/web-app_2_3.dtd;
   web-app
   display-nameTomcat Documentation/display-name
   description
  Tomcat Documentation.
   /description
   
 servlet
 servlet-nameDownloadFiles/servlet-name
 servlet-classDownloadFiles/servlet-class
 /servlet
   
  servlet-mapping
 servlet-nameDownloadFiles/servlet-name

 url-pattern/servlet/DownloadFiles/url-pattern
 /servlet-mapping
 /web-app

   Pls do let me know how can i solve this prob.
   I always appreciate ur help.
   Thanks in advance.

   Deepa

Deepa,

Your servlet must be in a package to work with Java
1.4
and greater.

After placing DownloadFiles in a package:
(com.deepa.servlet)

servlet
  servlet-nameDownloadFiles/servlet-name
 
servlet-classcom.deepa.servlet.DownloadFiles/servlet-class
/servlet

- Bob

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RE: Download file Problem - 404 error

[Bob Hall]

Deepa,

As someone pointed out in an earlier post you need to
include the following in your DownloadFile.java file:
(usually, as the first line)

package com.deepa.servlet;

You would also normally place DownloadFiles.java in
a directory that ended in com/deepa/servlet.  In
WinSpeak:
D:\data\eclipse\workspace\com\deepa\servlet\DownloadFiles.java

After a successful compile,
com\deepa\servlet\DownloadFiles.class
should be copied to the WEB-INF\classes directory of
your
web app.

- Bob

   -Original Message- 
   From: DEEPA M N [mailto:[EMAIL PROTECTED] 
   Sent: Tue 1/31/2006 11:43 AM 
   To: Tomcat Users List 
   Cc: 

D:\Tomcat5.0\jakarta-tomcat-5.0.28\webapps\DownloadFile\WEB-INF\classesjava
 com.deepa.servlet.DownloadFiles
   Exception in thread main
 java.lang.NoClassDefFoundError:
 com/deepa/servlet/DownloadFiles (wrong name:
 DownloadFiles)


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