The default session timeout in EEM (SOI uses EEM for authentication) is 24 hours. However, this can be customized. This document explains the steps to provide a custom session timeout.
On the EEM Server:
1) Stop the 'CA iTechnology iGateway' service, or run "net stop iGateway"
2) Open iAuthority.conf, which is located in the \CA\SharedComponents\iTechnology\ folder.
3) Add "<CredentialLifeTime>N</CredentialLifeTime>" before the </iSponsor> tag.
Note: N is the number of hours to set the expiration time to. You can increase or decrease the timeout value according to your requirement.
4) Start the 'CA iTechnology iGateway' service Or run "net start iGateway"