Thankx Jawahar for prompt reply the main isue is our UAT started and first time we face this issue.
as per BOBJ4.1 PAM explorer 8 supported windows 7 and also java 6
also checked form chrome browser issue is same
I am using and creating or edit Webi report from WEB rich client
"Choose some objects and Run the Query.
Repeat this several times until you got performance issue"
Regards