Below instructions are to take thread dump for Weblogic Application server, this is helpful to troubleshoot WebLogic at a different scenario.
Windows
ctrl+break key
UNIX
- Get PID of WebLogic Java process by (ps -ef | grep java or ps -ef | grep WebLogic)
- Execute a command on UNIX session :
kill -3 pid
Weblogic Admin utility
- Make sure you export weblogic.jar in your path
- Execute a command on UNIX session:
java weblogic.Admin -url t3://weblogicadminconsoleurl:7001 -username username -password password THREAD_DUMP
Weblogic Admin Console
- Login into WebLogic admin console
- Navigate to Server > Monitoring > Threads > Dump Thread Stacks
WLST
- Make sure to export weblogic.jar in your PATH
- Invoke WebLogic.WLST :
java weblogic.WLST connect("weblogic","weblogic","t3:weblogicinstaceaddress:port") threadDump()
I hope above procedure helps you in taking thread dump in Weblogic for troubleshooting.
If you are looking for in-depth knowledge on WebLogic, you may consider taking “Oracle WebLogic 12c for Administrators” online course.
Hi Chandan,
I have one question here, after generating the thread dumps by Kill -3 PID it will only generate the thread dumps but not kill the process. So we have to manually kill the process by means of Kill -9 PID ? or how to resolve the hung threads?
Hello Poorna,
That’s right. Kill -3 will only take the dump and to kill you need to use kill -9 or gracefully using stop script. Restarting will help to recover the application however, for permanent fixes – you need to find out the cause and work on it.
Chandan,
really this website is helpful with the information consisting related to middleware.. but requesting you to place more information about weblogic.
i have question on this….can you please let know, want to take thread dump using kill command but the the output it will generate will be stored in a separate file where i am looking.. so is it possible??? also what is the things we need to lookup after taking thread dump?? and how can we get to know ???
also one more.. heap dump::: want to take heap dump through command prompt and that too want to store in the separate file where i need.. is it possible???
please let me know.. Thank you so much in advance….
Hello Naresh, I am glad you found it useful. Yes, you can generate the dump in separate file and I will share the details soon.
For websphere, you can use IBM TDA as explained here to analyse – http://geekflare.com/generate-and-analyse-websphere-thread-dump/
For weblogic, you can use Samurai to analyse the thread dump.