Welcome to JR rajkumar.
I assume you have some sort of documentum related class deployed on that server ? The
thread that is handling the HTTP call is taking more than 10 minutes to return. Possible reasons are
1. Thread deadlock
2. Blocking calls
3. Infinite loops
etc
Can you post a thread dump ? WL 10 allows you to take a thread dump at any time when the server is running. Take the dump when you have some stuck threads