This Video KB demonstrates how we can start and shutdown Admin Console Service process in command line without rebooting Informatica domain in 9.x.
How to automate the repository and domain back up process for disaster recovery in PowerCenter
How to unassign services from an expired key and assign them to a valid key in 9.1.0 and 9.5.1
How to find in which host the Repository Integration service is running in a multi node domain