On 12/02/2013 18:42, Cool Techi wrote: > I am not logging to database, these are my appenders,
You posted the below in a previous message. It was in a single unintelligible line. Perhaps you could clarify what you intended to post and try again? org.apache.log4j.Category.callAppenders com.mysql.jdbc.SingleByteCharsetConverter.getInstance org.apache.tomcat.dbcp.pool.impl.GenericObjectPool.borrorObject() org.apache.tomcat.dbcp.pool.impl.GenericObjectPool.addObjectToPool() ogr.apache.tomcat.dbcp.pool.impl.GenericObjectPool.getNumIdle p > <appender name="errorfile" class="org.apache.log4j.DailyRollingFileAppender"> > <param name="File" value="D:/Logs/errorVer.log" /> > <param name="threshold" value="error" /> > <layout class="org.apache.log4j.PatternLayout"> > <param name="ConversionPattern" value="%d{yyyy-MMM-dd > HH:mm:ss,SSS} %5p %c{1}:%L - %m%n" /> > </layout> > </appender> > > <appender name="debugfile" > class="org.apache.log4j.DailyRollingFileAppender"> > <param name="File" value="D:/Logs/debugVer.log" /> > <layout class="org.apache.log4j.PatternLayout"> > <param name="ConversionPattern" value="%d{yyyy-MMM-dd > HH:mm:ss,SSS} %5p %c{1}:%L - %m%n" /> > </layout> > <filter class="org.apache.log4j.varia.LevelRangeFilter"> > <param name="LevelMin" value="debug" /> > <param name="LevelMax" value="debug" /> > </filter> > </appender> > > regards, > Ayush > >> Date: Tue, 12 Feb 2013 18:38:24 +0000 >> From: p...@pidster.com >> To: users@tomcat.apache.org >> Subject: Re: Tomcat hanging unexpectedly [URGENT] >> >> On 12/02/2013 17:53, Cool Techi wrote: >>> >>> >>> >>> I am new to this, I have just installed YourKit and see a lot of threads >>> blocked,but currently my response are fine, the blocked thread are showing >>> the following >>> >>> Blocker Thread QuartzSchedular_Worker-6 native ID .. >>> >>> On clicking on the Blocker thread it shows me the following, >>> >>> >>> >>> org.apache.log4j.Category.callAppenderscom.mysql.jdbc.SingleByteCharsetConverter.getInstanceorg.apache.tomcat.dbcp.pool.impl.GenericObjectPool.borrorObject()org.apache.tomcat.dbcp.pool.impl.GenericObjectPool.addObjectToPool()ogr.apache.tomcat.dbcp.pool.impl.GenericObjectPool.getNumIdle >>> Does any of these sound like reason. It would be great to get pointed in >>> the right direction. >>> Regards,Ayush >> >> >> Oh dear. >> >> Are you doing your app logging to a database? >> >> Is it the same database that your app uses? >> >> Is it the same connection pool that your app uses? >> >> >> p >> >> >>>> Date: Tue, 12 Feb 2013 15:35:40 -0200 >>>> From: edsonrich...@hotmail.com >>>> To: users@tomcat.apache.org >>>> Subject: Re: Tomcat hanging unexpectedly [URGENT] >>>> >>>> There is a similar thread published a week ago. >>>> It can be caused by almost anything, and my last suspect would be Tomcat >>>> it self. >>>> Most of time, the cause is some programming error, like: >>>> - missing step out of recursive loop >>>> - loading too many objects is memory (for example, when using JPA where >>>> graph of objects are all connected - so, when you load one object, all >>>> database is read into memory) >>>> - some deadlock in multi-threaded application... >>>> >>>> How to discover: >>>> >>>> 1) Try to get a memory dump and check how your memory is being used >>>> 2) Get a heap dump (stack trace, as well) or currently running >>>> application when it is hang, and check for deadlocks >>>> 3) Use VisualVM to get a big picture of what the virtual machine is doing >>>> 4) Put the application running under profiler (like JRockit Mission >>>> Control, or NetBeans profiler) >>>> >>>> These are some ideas... >>>> >>>> Regards, >>>> >>>> Edson >>>> >>>> >>>> Em 12/02/2013 15:27, Cool Techi escreveu: >>>>> Hi, >>>>> >>>>> We are using tomcat 6.0.26 on windows 2008 web server, with Jdk 1.6.32 >>>>> installed on the server. >>>>> >>>>> The >>>>> server seems to be running smoothly most of the time, but suddenly the >>>>> memory used goes very high and tomcat stops responding, the logs don't >>>>> show any out of memory or thread exceptions. >>>>> >>>>> What could be causing this? >>>>> >>>>> Regards, >>>>> Ayush >>>> >>>> >>>> --------------------------------------------------------------------- >>>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >>>> For additional commands, e-mail: users-h...@tomcat.apache.org >>>> >>> >>> >>> >> >> >> -- >> >> [key:62590808] >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >> For additional commands, e-mail: users-h...@tomcat.apache.org >> > > -- [key:62590808] --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org