Hi Anushree,
Thanks for the link. Based on the link security audit log is present at the location:
\usr \sap \ <SID> \ <instance_number> \j2ee \cluster \server <n> \log \system \security_audit.log
when i checked in my server at the following path:
D:\usr\sap\<SID>\J00\j2ee\cluster\server0\log\system
I could see that there is file security_audit_00.0.log. This file is not updated with any information since 05/21/2014. Could it be that the logging for security audit file would have been switched off.
Regards,
Darshan