Hi Ravishankar,
You can try to configure the following setting of your application pool in IIS.
1. Recycle Worker Process (In Minutes) : 120
2. Recycle Worker Process at the Following times: 01:00
Note: Making this changes the application Pool recycles at 1:00AM and creates a new w3sp.exe process which handles new requests
3. Startup time has been increased from 90 Seconds to 300 seconds
Note: We made this change as the application Pool exceeds the time limit during the startup
4. Maximum Virtual memory (in megabytes): 1700
5. Maximum used memory (in Megabytes): 1000
6. Maximum Number of Worker Process: 1
You can also refer to:
http://technet.microsoft.com/en-us/library/cc298550%28office.12%29.aspx
Thanks,
Pengyu Zhao