on 09-09-2010 1:12 PM
Hello
Would any one please tell what all log files can be deleted to create a space. Also at folder location
/usr/sap/UAE/J00/j2ee/cluster/server0 i can see one file 'core' create recently and is huge.
Would you please tell what is the use of this file and can that be deleted.
Thanks
Uttam borsare
Hi
I am supposing that the file you are saying under /usr/sap/UAE/J00/j2ee/cluster/server0 is like this:
core.YYYYMMDD:HHMMSS:xxxxxx.0001.dmp ==> normally this is the java heapdump if you are using IBM JDK.
javacore.YYYYMMDD:HHMMSS:xxxxxx.0001.txt ==> normally this is the java threaddump.
The size of core.YYYYMMDD:HHMMSS:xxxxxx.0001.dmp is equal to the heap size, normally 2GB or 1GB, so I think this is
you are taling as it is "huge".
The size of javacore.YYYYMMDD:HHMMSS:xxxxxx.0001.txt is noramll several MB, it does not matter much.
And generally the heapdump is generated if there is a OutOfMemory occurs, of course you can delete the file(s) to release
disk space, but sometimes if you need to investigate more about the relevant error, you move such files to other disk.
Best Regards,
Thunder
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Hi Uttam
The 'core' file should be generated from OS level, not JDK/J2EE, there is the corresponding analyze tool or command on different Unix platform, for example, on AIX, refer to this:
http://fixunix.com/aix/513759-command-get-stack-trace-core-dump-aix-5-3-a.html
But if the core file was not generated recently, I would like to suggest you just delete it.
While if the core file is generated frequently, you would better check further with your OS administrator.
Thanks
Thunder
Hi,
you might extract the C-STACK from the core file using:
<debugger> <triggering executable> <core file>
use jlauch as the triggering executable.
Regards,
Jozsef
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Hello,
Are you talking about a 'core' file which can also be called as system core file which is created when a process is killed or terminated by OS. Normally this file will be deleted to free up some space. In some cases the file has to provided to SAP in order to solve issues.
The core file under server0 directory should be a java core file like 'javacorexxxx.txt', this file should not be deleted since they are updated by server0 of J2EE engine.
You can instead configure log and trace file sizes to limit the growth of them.
http://help.sap.com/saphelp_nw70/helpdata/en/68/f04442c1a1c253e10000000a1550b0/frameset.htm
Regards,
Yoganand.V
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Hi,
This file related to JAVA startup log files.
if you have full in these drive...you can change your trans directory to some other drive and change the parameter value into new path.
Thanks and Regards,
Jibin.
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