I am not logging to database, these are my appenders,
<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 >