IBM InfoSphere DataStage and QualityStage Operations Console session expires after approximately 12 hours, even if it is being used at that time.
Resolving The Problem
The automatic session expiry can not be prevented. However, you can change the session expiry time.The default session expiry is set to 760 minutes. Use the WebSphere Application Server admin console to change the expiry time:
1) Open the WebSphere Application Server web admin console (https://<domain>:9043/ibm/console/login.do?action=secure) and login as the WebSphere administrative user (not the Information Server administrative user)
2) Open the Security -> Global security pane from the left hand tree
3) Open the LTPA link in the content pane
4) Change the 'LTPA timeout" value from 760 to the desired value.
5) Stop and restart WebSphere Application Server