For that article, I assume that you are already familiar with WebLogic Scripting Tool.
If not, you may have a look here, you will find a description of this project and some useful links (about using WLST offline and online).
Well, here's a little script I wrote for a client to be able to perform threaddumps automatically, without any manual input such as a 'kill -3" or "CTRL+Pause".
Here we go :
serverName = 'AdminServer'
counter = 0
sleepTime = 5000
connect ('weblogic','weblogic','t3://localhost:7001')
for counter in range(10):
java.lang.Thread.sleep(sleepTime)
fileName = 'dump' + serverName + '_' + (java.util.Calendar.getInstance().getTimeInMillis()).toString() + '.dmp'
threadDump('true', fileName, serverName)
Just save the code above in a file, let's say "getThreadDumps.py" and then launch it like :
java weblogic.WLST getThreadDumps.pyor while online : execfile('getThreadDump.py')
6 comments:
Require WebLogic Server Version >= 9.x
It's true that I should have precised the version of Weblogic you can use WLST with. Actually, it's embedded with WLS 9 and above but you may still use it with WLS 8. More details on the project homepage.
Is it possible to modify this to take a thread dump of another managed server? Even when changing serverName to 'myserver', it still seems to take a dump of the AdminServer?
serverName='myserver'
counter=0
sleepTime=5000
connect ('weblogic','weblogic','t3://localhost:7001')
for counter in range(10):
java.lang.Thread.sleep(sleepTime)
fileName = 'dump' + serverName + '_' + (java.util.Calendar.getInstance().getTimeInMillis()).toString() + '.dmp'
threadDump('true', fileName, serverName)
Thanks.
Of course !
The name you define in the var "serverName" is only here to help find your dumps.
If you want to dump a managed server, you simply have to change the port in the "t3://[machine]:[port]" url.
Regards.
Exceptionnel! Merci très beaucoup!
Where does the saved script need to be placed? Sorry, I haven't used WLST before. I do get logged in but then get a syntax error and not sure what directory the WLST defaults to 'serverConfig'
SyntaxError: invalid syntax
wls:/SIT11/serverConfig> java weblogic.WLST c:/temp/thread_dump_script.py
Traceback (innermost last):
(no code object) at line 0
File "", line 1
java weblogic.WLST c:/temp/thread_dump_script.py
^
Thanks
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