If the DB2 server name or the logon account name for the DB2 server changes, you must update the media server's list of DB2 servers and authentication credentials. Make the same changes on the DB2 server by using the Remote Agent Utility to configure instance information and database access.
The logon account name must have administrative rights to the DB2 server. If the user name is incorrect or is not provided, or if it does not have administrative rights, then you cannot perform DB2 backup or restore operations to that computer.
To edit a DB2 server name or a logon account on the media server's list of authentication credentials