Re: i18n Struts Jco Code in Tomcat on Windows English and Polish System

2008-05-23 Thread Dirk Weigenand
Take care that the SAP side is also capable of UTF-8. Your basis team might 
have to do a unicode migration first.

regards

  Dirk

 Original-Nachricht 
 Datum: Fri, 23 May 2008 16:22:08 +0530
 Von: Raghuveer [EMAIL PROTECTED]
 An: \'Tomcat Users List\' users@tomcat.apache.org
 Betreff: i18n Struts Jco Code in Tomcat on Windows English and Polish System

  
 
 I am working on Struts ,SAP-JCO .
 
 This is i18n application running on Tomcat.
 
  
 
 I have designed my application in UTF8 charset.
 
 When Saving the polish characters from application they are saved into SAP
 Database properly.
 
  
 
 Before Saving i am doing following String modifications.
 
  
 
 The same code doesn't work on Tomcat Server on Windows English System.Here
 the Polish characters( aeclónszz ) are saved as #.
 
  
 
 What would be cause for this.
 
 What changes i need to do in my code to work on both English And Polish
 Windows (Tomcat Server)
 
  
 
  
 
 strConvertedMessage = new String(strText.getBytes(UTF8), UTF8);
 
  
 
 inputTable.setValue(strConvertedMessage,TABLENAME);
 

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Re: Testing performance and scalability

2008-05-15 Thread Dirk Weigenand
Hi,

this will likely depend on how much resources you can throw at your performance 
test tools.

JMeter for instance can work in master/slave mode. So the overall count of 
simulated users will depend on how much threads your operating system will make 
available to the jvm running jmeter (of course depending on your test cases) 
times the hardware you can spend on your tests.

You also want to take into to account the network resources available to you as 
a limiting factor for your tests.

regards

Dirk

 Original-Nachricht 
 Datum: Wed, 14 May 2008 16:47:39 -0400
 Von: [EMAIL PROTECTED]
 An: Tomcat Users List users@tomcat.apache.org
 Betreff: Testing performance and scalability

 We are developing a website that will likely be hit by up to half a 
 million users.
 
 Our first concern is obviously performance and scalability, but am 
 wondering how best to test this?  Most stress tools I've see only simulate
 in the order of a thousand users.
 
 Would be grateful for suggestions
 
 cheers,
 
 David

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Re: Usage of Hibernate

2008-04-07 Thread Dirk Weigenand
Hi,

 Original-Nachricht 
 Datum: Sun, 6 Apr 2008 19:37:04 -0700 (PDT)
 Von: Sam Wun [EMAIL PROTECTED]
 An: Tomcat Users List users@tomcat.apache.org
 Betreff: Usage of Hibernate

 Hi,
 
 I am new to Hibernate.
 From googl'ing around, I found that Hibernate is designed for mapping
 object classes and database.
 But this doesn't entirely solve my puzzle on this framework, that is what
 it's distinct advantage over simple usage of JDBC?
 UnlessHibernate has another important/popular usage rather than only
 dealingwith database, I would think this is may be the only reason 
 whyHibernate
 getting more popularity.
 Can anyone tell me?
 

Have a look over at http://www.hibernate.org/344.html.

regards

Dirk
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Re: Connection Pooling

2008-02-27 Thread Dirk Weigenand
Hi,

you should try to use a dedicated worker process for connections.

Oracle by defaults spawns (some) worker processes for incoming connection 
requests which are shared (i.e. not dedicated to a certain user).

Setting your connection count to a high number will probably result in an 
equally high number of worker processes used.

So try to use a dedicated connection:

jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT
 = 1521)))(CONNECT_DATA=(SID=ORCL)(SERVER=DEDICATED))).

You will have to use the jdbc driver supplied by Oracle though to get this 
working (you can use a recent version (i.e. = 10.x.y.z) with Oracle 9i).

For further (and exact) information on this topic ask your local oracle 
database administrator.

regards
   Dirk

 Original-Nachricht 
 Datum: Wed, 27 Feb 2008 11:56:36 +0530
 Von: abhishek reddy [EMAIL PROTECTED]
 An: Tomcat Users List users@tomcat.apache.org
 Betreff: Re: Connection Pooling

 thanks Mr Adam Gordon for the reply,
 
 Can u tell me how to determine why oracle is generating those many
 processes?
 Also tell me where to check the number of oracle processes in use and
 how to reduce it?
 
   abhishek reddy wrote:
 Here are the pool configuration details in context.xml file.
   
Resource
name=jdbc/pool
auth=Container
type=javax.sql.DataSource
username=scott
password=tiger
driverClassName=sun.jdbc.odbc.JdbcOdbcDriver
url=jdbc:odbc:pool
maxWait=6
removeAbandoned=true
maxActive=130
maxIdle=50
removeAbandonedTimeout=300
logAbandoned=true
/
   
 software:
 database : oracle 9i
 server: tomcat 5.5
   
 iam getting the following error:
   
 java.sql.SQLException: [Oracle][ODBC][Ora]ORA-00020: maximum number
of processes (150) exceeded.
   
 I have set the maxActive to 130 then how will the number of
 processes
exceeds 150?
   
 tell me when will the maximum number of processes (150) exceeded in
the oracle and how do i solve the problem?
   
 I have checked the application 5 to 10 times and there is no
connection leakage problem.
   
 the application is under going performance testing.with around
200 users at a time, for the first time it worked perfeclty, next
 time
the
 above mentioned error is comming..
   
 i need your help in solving this problem..
   
   
   
 
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 -- 
 Abhishek
 
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Re: TPTP and Tomcat

2008-02-05 Thread Dirk Weigenand
Hi,

have a look at the following presentation:

http://www.eclipse.org/tptp/home/documents/tutorials/viewlets/v4.1/WTP/WTP_TPTP_viewlet_viewlet_swf.html

Be sure you don't use MyEclipse since they disable certain features in the 
original eclipse installation that conflict with their own version so your 
mileage may vary there.

regards

Dirk

PS: I have not tried what the eclipse team shows in the presentation since i 
use yjp to do some profiling. So i'll likely not be able to answer questions 
about the integration of tptp especially attachment to processes running 
remotely...

 Original-Nachricht 
 Datum: Tue, 5 Feb 2008 15:10:31 +0530
 Von: Arun [EMAIL PROTECTED]
 An: Tomcat Users List users@tomcat.apache.org
 Betreff: Re: TPTP and Tomcat

 I am talking about tptp. Is not it a fully fledged one?
 I just dont know how to profile a web appplication running outside my
 eclipse 3.2.
 
 
 
 On 2/5/08, Leon Rosenberg [EMAIL PROTECTED] wrote:
 
  that depends on what you want to profile and how muc hmoney you want to
  spend.
  some sites to look into
  moskito.anotheria.net
  www.lambdaprobe.com
  www.yourkit.com
  http://www.quest.com/jprobe/
 
  regards
  Leon
 
  On Feb 5, 2008 7:25 AM, Arun [EMAIL PROTECTED] wrote:
   Hi,
  
   I am new to profiling. Can anybody give me an idea as to how I can
  profile a
   war file deployed in resign under eclipse 3.2.
   My Resin is running outside eclipse3.2. I cannot find a way to attach
  the
   webapp to profiling framework from eclipse.
   Please help?
  
   --
   Thanks
   Arun George
  
 
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 -- 
 Thanks
 Arun George

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Re: [OT] Release Management and Deployment

2007-11-16 Thread Dirk Weigenand
Hi,

have a look at AntHill (http://www.urbancode.com) and CruiseControl 
(http://cruisecontrol.sourceforge.net/).

regards

   Dirk

 Original-Nachricht 
 Datum: Fri, 16 Nov 2007 16:46:39 +0100
 Von: Andrew Miehs [EMAIL PROTECTED]
 An: Tomcat Users List users@tomcat.apache.org
 Betreff: Re: [OT] Release Management and Deployment

 On 16/11/2007, at 4:09 PM, Martin Gainty wrote:
 
  2 options-Tried and true Ant which is rock solid reliable, easily  
  configurable and a user-friendly user-list where a resource will  
  respond in 24 hoursmore information available
 athttp://ant.apache.org/Maven..complex 
   environment with heavy reliance on repositories and plugins..If any  
  attribute is incorrect such as groupId/artifactId/versionor plugin  
  repositories are inaccessible or you have a file system which doesnt  
  support the default repository of .m2 then nothing works whats more  
  there is no user-list (at least from what I've seen thus far)  
  available..On the plus side maven's ability to configure internet  
  site repositories is probably maven's most powerful
 featurehttp://maven.apache.org/
  HTH/
 
 Thanks Martin,
 
 Maven and Ant are both great tools - they are great for building a  
 Release and Deployment platform, but in the are not that in themselves.
 
 I probably should have said that I am looking for a web based system,  
 than can use whatever - maven, ant, make, shell... but
 provides a friendly environment to track releases, publish software,  
 etc...
 
 Thanks
 
 Andrew

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Re: speed up the server

2007-11-07 Thread Dirk Weigenand
Hi,

you could use a profiler to find the slow part of your application.

regards
   Dirk

 Original-Nachricht 
 Datum: Wed, 7 Nov 2007 02:21:30 -0800 (PST)
 Von: tbt [EMAIL PROTECTED]
 An: users@tomcat.apache.org
 Betreff: speed up the server

 
 Hi
 
 I'm a newbie to tomcat and i'm using it for a web application. But
 currently
 the application is running a bit slow once deployed. Are there any ways to
 speed up the request/response time in tomcat.
 
 Thanks
 -- 
 View this message in context:
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 Sent from the Tomcat - User mailing list archive at Nabble.com.
 
 
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Re: All threads busy + OutOfMemoryError

2007-10-23 Thread Dirk Weigenand
Hi,

have a look at this blog:

https://www.sdn.sap.com/irj/sdn/weblogs?blog=/pub/wlg/6433

Perhaps you find the described tool (SAP Memory Analyzer) useful for inspecting 
your memory dump.

regards

Dirk

 Original-Nachricht 
 Datum: Tue, 23 Oct 2007 10:43:39 +0200
 Von: Peter Bauer [EMAIL PROTECTED]
 An: Tomcat Users List users@tomcat.apache.org
 Betreff: All threads busy + OutOfMemoryError

 
 Hi all,
 
 i thought i had solved the All threads busy problem by implementing a
 dedicated servlet class for forwarding requests but maybe i was wrong or
 there is another problem. During a loadtest last night i got the
 following lines in the catalina.out:
 
 23-Oct-2007 02:24:36 org.apache.tomcat.util.threads.ThreadPool logFull
 SEVERE: All threads (75) are currently busy, waiting. Increase
 maxThreads (75) or check the servlet status
 java.lang.OutOfMemoryError: Java heap space
 Dumping heap to /var/log/dmc/java_pid29947.hprof ...
 Heap dump file created [272845160 bytes in 6.892 secs]
 23-Oct-2007 02:29:22
 org.apache.tomcat.util.threads.ThreadPool$ControlRunnable run
 SEVERE: Caught exception (java.lang.OutOfMemoryError: Java heap space)
 executing [EMAIL PROTECTED],
 terminating thread
 java.lang.OutOfMemoryError: Java heap space
 
 
 As you can see a dumpfile of the heap has been created. Additionally the
 exceptions can be found in the attached localhost_log file.
 
 I already opened the dumpfile in Yourkit 7.0 but i have no clue how such
 a dump normally looks like and how to search a memory leak.
 Maybe someone could give me a hint how to track down the potential
 Memory Leak.
 I attached the files, please take a look at them. The compresses
 heapdump file has about 5MB so i cannot send it to the mailing list, but
  can send it directly if somebody needs it.
 
 
 thx,
 Peter
 

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restrict access to application via RemoteHostValve

2006-08-30 Thread Dirk Weigenand
Hi,

i'd like to restrict access to an application for a time using the 
RemoteHostValve in Tomcat.

Since we host that application for our user base it won't suffice to greet them 
during the duration of restricted access with a 403 permission denied reply.

Is there a possibility to provide a message using the RemoteHostValve? Or is 
the solution to extend RemoteHostValve supplying a message that can be 
displayed in the users browser?

regards

  Dirk
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Re: stress test on tomcat

2005-11-17 Thread Dirk Weigenand
Hi,
 --- Ursprüngliche Nachricht ---
 Von: William Mok [EMAIL PROTECTED]
 An: users@tomcat.apache.org
 Betreff: stress test on tomcat
 Datum: Wed, 16 Nov 2005 14:57:21 -0800
 
 -
 16-Nov-2005 2:44:30 PM org.apache.jk.common.ChannelSocket
 acceptConnections
 WARNING: Exception executing accept
 java.net.SocketException: Too many open files
 
 William

You are running into resource limits posed by your operating system. It
would help btw. if you'd reveal it to us.

On Linux you can change this value using sysctl or the proc-file system.

regards,
 Dirk

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