The documentation portal is undergoing maintenance. During this period, you can't create any new user credentials. If you do, you'll need to recreate the user credential after the maintenance period ends.
The PowerCenter Integration Service process creates recovery tables on the target database system when it runs a session enabled for recovery. When you run a session in recovery mode, the PowerCenter Integration Service process uses information in the recovery tables to complete the session.
When the PowerCenter Integration Service process performs recovery, it restores the state of operations to recover the workflow from the point of interruption. The workflow state of operations includes information such as active service requests, completed and running status, workflow variable values, running workflows and sessions, and workflow schedules.