There are two parts of the NetWorker Management Console. The NMC application downloaded to the workstation and the GST service on the console server
The following procedures given details on resetting the NMC Administrator password to the default value on Solaris, Linux and Windows systems.
Using this procedure you can override LDAP NMC authentication to the internal authentication or reset it back again to the internal authentication
This post provides the basic steps needed to perform a backup of the GST Database for the NetWorker Management Console (NMC) server.
I find it faster on the command line than using any gui when it comes to stop and start of the NetWorker daemons or services.