Re: Memory Leak(?) causing tomcat to store 57610801 tomcat objects in ONE request
2009/1/10 Caldarale, Charles R chuck.caldar...@unisys.com: From: Leon Rosenberg [mailto:rosenberg.l...@googlemail.com] Subject: Memory Leak(?) causing tomcat to store 57610801 tomcat objects in ONE request HOW can it actually happen that a response object contains 8.000.000 mime headers? Must be a very productive servlet... Sounds like you've got a rather ugly (and probably infinite) loop in your webapp. Might want to put a trap in org.apache.tomcat.util.http.MimeHeaders to catch generation of an excessive number of header fields. I agree with Charles. But, to note: the count of MimeHeaderField instances mentioned in the message is of the same range as the count of Cookie instances. Thus I think that all those header fields are derivatives of the enormous count of cookies that your application created. I remembered about the following incident from two months ago, when programming error caused a session to be reestablished many times in a row: http://www.nabble.com/multiple-Set-Cookie-headers-in-initial-http-response-td20437761.html (multiple Set-Cookie headers in initial http response). Best regards, Konstantin Kolinko - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Memory Leak(?) causing tomcat to store 57610801 tomcat objects in ONE request
From: Leon Rosenberg [mailto:rosenberg.l...@googlemail.com] I was recently hunting what I thought to be a memory leak in our application. What happens is that the Old Gen Space is running full at once and then tomcat freezes because java is busy with Full GC all the time. I've managed to create a memory dump shortly before the crash and the top5 looked like that: 14481362 instances of class org.apache.tomcat.util.buf.ByteChunk 14471293 instances of class org.apache.tomcat.util.buf.CharChunk 14464658 instances of class org.apache.tomcat.util.buf.MessageBytes 7113296 instances of class org.apache.tomcat.util.http.MimeHeaderField 7080192 instances of class javax.servlet.http.Cookie Other classes looked as normal (I was making jmap histograms all the time and comparing). Now, the funny thing is that all that data was bound to ONE request. I checked the manager status page previously and it showed only one active request, but lasting more than 5 hours: S18757746 ms0 KB0 KBXXX.XXX.XXX.XXX www.site.com POST /searchboxright.html?linkId=XXX|SearchBoxRight|NA| HTTP/1.1 By analyzing the dump I found that all MimeHeaderFields were in one large array belonging to one response object, belonging to the request, with remote ip equal to the XXX.XXX.XXX.XXX ip of the request in the manager. I understand that sicne the request lasted 5 hours all the data went into old space filling it out and causing the problem, but HOW can it actually happen that a response object contains 8.000.000 mime headers? App/Tomcat stuck in a loop adding cookie headers? Do you have any thread dumps? Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Problems with disableproxyCache=false
From: Al Blake [mailto:a...@blakes.net] When I include the code: Context Valve className=org.apache.catalina.authenticator.NoLoginAuthenticator disableProxyCaching=false/ /Context In server.xml tomcat hangs on startup. Comment the line out and everything is fine and the application works - but the IE users cant use the app(!). That isn't a valid Context element. If you want to apply settings to every content, put them in CATALINA_HOME/conf/context.xml, not server.xml Also, securePagesWithPragma=false is usually a better option than disableProxyCaching=false Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: SSL and client-authentication with smartcard
From: Benoit Maupas [mailto:bmau...@yahoo.fr] I am using Tomcat with SSL and client-authentication by smartcard. My application uses Struts2 and Spring-Security. I would like to : 1/ get current SSL session retrieved from session-id There isn't (at the moment) a direct relationship. Version 3.0 of the servlet spec (Tomcat 7) may change that as it explicitly mentions using SSL sessions. 2/ close current SSL session in order to force end-user to typein again his pin code (i.e. a logout function) Should be simple in Tomcat 7. For Tomcat 6 and earlier you'll need to do this yourself. I don't know how easy this will be until we have written the code for Tomcat 7. 3/ detect a smartcard removal This could be tricky. It depends what the browser does when the smart card is removed. I think, based on a previos thread, the SSL session and connection remain valid so tere is no way for Tomcat to detect this. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
to Set permission of apache_tomcat_6.0.16
Hi all, I really dont know anything about apache-tomcat-6.0.16 server configuration.so i have issue like how to create virtual directory in apache-tomcat-6.0.16 server or is there any default directory i want to set it's permission like which we set in IIS of microsoft. In IIS there is one property of virtual directory is Execute permission i want to set that permission to script only in tomcat so how can i set in apache-tomcat-6.0.16 server. please Help me I am really in trouble. Please Help ME Waiting for reply Thanks in advance.. -- View this message in context: http://www.nabble.com/to-Set-permission-of-apache_tomcat_6.0.16-tp21388742p21388742.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Strange parser behavior from adding log4j
Mark, I checked out rev 733300 from /tomcat/tc6.0x/trunk, built it and the relase, and used an unzipped copy of apache-tomcat-6.0-snapshot. Unfortunately, the same error still happens when I start up my webapp: ERROR org.apache.commons.digester.Digester - Parse Error at line 405 column 17: The content of element type struts-config must match (display-name?,description?,data-sources?,form-beans?,global- exceptions?,global-forwards?,action-mappings?,controller?,message- resources*,plug-in*). org.xml.sax.SAXParseException: The content of element type struts- config must match (display-name?,description?,data-sources?,form- beans?,global-exceptions?,global-forwards?,action- mappings?,controller?,message-resources*,plug-in*). at org .apache .xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source) ..etc... Any other thoughts?? Thanks, Ken On Jan 9, 2009, at 5:17 AM, Mark Thomas wrote: From: Ken Bowen [mailto:kbo...@als.com] [Tomcat 6.0.18, java 1.5.0_16, struts 1.2.8] snip/ Has anyone any thoughts on what might be happening here? Could be a variation of https://issues.apache.org/bugzilla/show_bug.cgi?id=45933 Can you try testing with a build from trunk? Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
RE: Strange parser behavior from adding log4j
From: Ken Bowen [mailto:kbo...@als.com] Mark, I checked out rev 733300 from /tomcat/tc6.0x/trunk, built it and the relase, and used an unzipped copy of apache-tomcat-6.0-snapshot. Unfortunately, the same error still happens when I start up my webapp: ERROR org.apache.commons.digester.Digester - Parse Error at line 405 column 17: The content of element type struts-config must match (display-name?,description?,data-sources?,form-beans?,global- exceptions?,global-forwards?,action-mappings?,controller?,message- resources*,plug-in*). org.xml.sax.SAXParseException: The content of element type struts- config must match (display-name?,description?,data-sources?,form- beans?,global-exceptions?,global-forwards?,action- mappings?,controller?,message-resources*,plug-in*). at org .apache .xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source) ..etc... Any other thoughts?? Hmm. A couple. 1. Is the XML file it is complaining about valid? 2. Can you build a simple test case? If so, open a bugzilla entry and attach your test case. Mark - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Implementing service chaining with Tomcat6
I am using Tomcat6.0.14 with Jdk1.6 on Linux RH4. My application comprises a daemon and Tomcat6. The daemon is slow in starting up. I need Tomcat6 to be started after the daemon is operational. While the daemon is a Java application, its a third-party tool whose src I do not control. Is there any mechanism within Tomcat configuration by which I could implement this chaining or synchronization such that catalina.sh starts Tomcat VM after the daemon is somehow determined to be active? Tx, - U - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
single instance of background job?
This isn't really a Tomcat question I'm guessing but I don't know where else to ask. In our setup we have multiple Tomcats behind a load balancer. I have a background task that will run once a day, via Quartz. All Tomcats will be using the same war so they will all run the job, but I need it so only one of them runs the job. I'm looking for ideas for how to implement this. At the moment all I can think of is to use a table in a database with a unique constraint on a column, and each background process tries to insert today's date (-mm-dd) and the one that succeeds runs the job, and the ones that don't, do nothing. Thanks - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Implementing service chaining with Tomcat6
What options are available to you to determine if the daemon is ready? For example, does it create a lock file? If so, you could modify your tomcat startup script in /etc/init.d, the one that calls /usr/local/tomcat/bin/startup.sh, and have it check if the daemon is ready and wait until it is, then when it is proceed and start tomcat. For example, here's a little /bin/sh script that waits for the file /bin/zzz to be created and sleeps 5 seconds and keeps checking: while test ! -f /tmp/zzz do echo sleeping for 5 seconds /bin/sleep 5 done echo here we go uma...@comcast.net wrote: I am using Tomcat6.0.14 with Jdk1.6 on Linux RH4. My application comprises a daemon and Tomcat6. The daemon is slow in starting up. I need Tomcat6 to be started after the daemon is operational. While the daemon is a Java application, its a third-party tool whose src I do not control. Is there any mechanism within Tomcat configuration by which I could implement this chaining or synchronization such that catalina.sh starts Tomcat VM after the daemon is somehow determined to be active? Tx, - U - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org From - Sat - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Linux Runtime Script
Hi, Does anyone has a Linux script to run Tomcat as Linux services, i.e. the runlevel scripts ? I have tried to make one, but in case there is a proven script that has been deployed somewhere... can someone please share ? Thanks, Feris
Re: single instance of background job?
Hi, This should be strait forward if you use terracotta. If you have a NFS that all Tomcat instances share, using FileChannel::lock is way cheaper than any other solution. -lg On Sun, Jan 11, 2009 at 2:30 AM, Rusty Wright rusty.wri...@gmail.com wrote: This isn't really a Tomcat question I'm guessing but I don't know where else to ask. In our setup we have multiple Tomcats behind a load balancer. I have a background task that will run once a day, via Quartz. All Tomcats will be using the same war so they will all run the job, but I need it so only one of them runs the job. I'm looking for ideas for how to implement this. At the moment all I can think of is to use a table in a database with a unique constraint on a column, and each background process tries to insert today's date (-mm-dd) and the one that succeeds runs the job, and the ones that don't, do nothing. Thanks - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
