EBS R12.1.3 : Forms interface gets very slow.

Hi All,

We have recently upgraded from 11.5.10.2 version to R12.1.3.

After the upgrade, everything works fine and performance is normal most of the time. But we have been facing issues with forms interface navigation almost everyday for a duration of 30 minutes or so. At the time of the issue, there is no load on the system and only 4 to 5 test form sessions are open.  The application login works fine and self service navigation is not affected. When we launch forms based function, the JRE launches without delay. But when it opens the form, it does not give the control back to the user and keep showing the