Server0 gets restarted.

[Former Member]

Dear All,

We are having issue with our Java on our CRM production server. When we

try to access user management on portal the server0 gets restarted

after some time and the window doesnt open.The problem we are getting

is in Central instance and in application server its fine.The same

problem we are facing in SIT and UAt server also.

Steps for Reconstruction

When we login to our UI and try to access user management that wont

open and in turn server0 gets restarted

Thanks.

Atul.

[Former Member]

Hello,

When a server restarts, its usually an outofmemory error or in some cases a jdk crash leading to server crash. Please check in your <j2ee engine>/work directory dev_server0 and std_server0.out files if you see errors like OutOfMemory!

Please ensure the JVM settings are configured as per the note 723909 and the OS Specific note within.

Please also ensure that you have heapdump settings configured as per following notes based on which OS you have:

1004255 Sun jdk

1267126 IBM i: How to get a heapdump which can by analyzed with MAT

1265455 How can you generate a system dump for analysis using MAT? (LNX)

1263258 LXN / 64

1259465 How to get a heapdump which can by analyzed with MAT (AIX)

(1053495 heapdump settings on AIX)

Thye heapdump which is .hprof file on sun jdk and on ibm its .phd/.dmp file is necessary for the analysis of the outofmemory crash if the crash is not occuring due to JVM misconfiguration but due to some memory leak.

The heapdumps can be analyzed by MAT Tool which can be downloaded from www.ecllipse.org/mat

Hope the above helps.

Best Regards,

Snehal Bhaidasna

SAP Labs, Palo Alto, CA(USA)

[p330068]

Hi Atul,

Please check available space in the server directory.

Check the user management logs and Security Logs for further investigation:

[UME Logging and Monitoring|http://help.sap.com/saphelp_nw70/helpdata/en/f2/6a82270fd99844a65085bd90022fab/frameset.htm]

Security Logs Location

/usr/sap/SID/j2ee/cluster/serverX/log/security.log

Hope it helps

Regards

Arun

[JPReyes]

This could be a memory config issue.

Read,

Note 709140 - Recommended JDK and VM Settings for the WebAS630/640/7.0

Note 723909 - Java VM settings for J2EE 6.40/7.0

Regqards

Juan