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J2EE application profiling with yourkit on Weblogic

One of our provider uses HP-UX on production machine, a few J2ee applications runs on that machine. After sometimes, we start getting complain from our clients that portal often goes out of memory and we decided to investigate the application with Yourkit. Yourkit is a industry leading java profiling software on present day, it can works with standalone java application as well as remote profiling. YourKit supports SQL,JNDI and run time memory profiling, see the following link for more information.

1) First download the version you need, in my cases i download Windows and HP-UX version and got the evaluation key.
2) Unzip the YJP-9.5.3*.zip and run the following command on HP-UX to set the agent for profiling on weblogic
 cd yjp-9.5.3/lib & java -jar yjp.jar -integrate

which will bring up you new command console to configure agent with the weblogic server. Go throws the command prompt and locate your weblogic startup script as follows:

Now you will get a new startup script named startWebLogic_with_yjp.sh to start Weblogic Server with yourkit agent.  Most of all time you can use these script to start WebLogic server with agent, script only contains the  jvm argument

JAVA_OPTIONS="-agentpath:/var/oracle/app/yourkit/yjp-9.5.3/bin/hpux-ia64-64/libyjpagent.so=disablestacktelemetry,disableexceptiontelemetry,builtinprobes=none,delay=10000,sessionname=WebLogicMona
 $JAVA_OPTIONS"
export JAVA_OPTIONS 


On HP-UX these above script couldn't start WebLogic with agent, for some reason env variable JAVA_OPTIONS was not enable on startup terminal. For quick fix i copy the JAVA_OPTIONS on /bin/startWeblogic.sh
and start the server nohup ./startWeblogic.sh &
now in the nohup.out file we found the following log
[YourKit Java Profiler 9.5.3] Loaded. Log file: /home/oracle/.yjp/log/8907.log

From the 8907.log we found the port name which uses agent to connect with.
[YourKit Java Profiler 9.5.3] [12.860]: Profiler agent is listening on port 10001


Now from our host operating system we can connect remotely and profiling our applications.
You can watch demos here to quick start with java YourKit.
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