Lotus Domino Performance and Crashes/Hangs

Server_Session_Timeout is a parameter used to make sure that Lotus Notes users don't take up valuable Domino CPU and memory resources when they are idle.
 

for example set   Server_Session_Timeout =30,  meaning that after 30 minutes of inactivity, a Lotus Notes user connection is dropped and the resources are freed up for other more active and deserving users.

IBM Lotus recommends that this parameter should be set no shorter than 30 minutes. Otherwise, the server might spend more resources reconnecting people than it should

Description of "Server_MaxSessions=" and "Server_Session_Timeout=" Parameters
http://www.ibm.com/support/docview.wss?rs=899&uid=swg21089879

DeveloperWorks Lotus Performance homepage

http://www-10.lotus.com/ldd/performance

Lotus Notes Diagnostic tool to analyse NSD and semdebug
http://www-01.ibm.com/support/docview.wss?rs=899&uid=swg24019151

Domino Server Performance Troubleshooting Cookbook
http://www-1.ibm.com/support/docview.wss?uid=swg21234550

The Blue screen of Death (Windows NT crash) and the Windows NT Architecture
http://www-1.ibm.com/support/docview.wss?uid=swg21099931

Troubleshooting Notes/Domino Server Performances
http://www-1.ibm.com/support/docview.wss?uid=swg27003189

Notes/Domino Best Practices: Performance
http://www-1.ibm.com/support/docview.wss?uid=swg27008849

Using the Domino server INI parameter Server_Max_Concurrent_Trans
http://www-01.ibm.com/support/docview.wss?uid=swg21207456

Log off idle Lotus Notes users for better Domino Server performance
http://searchdomino.techtarget.com/tip/...