(Oracle and Microsoft SQL Server only) Returns information about the primary database from the RASD.
The database ID and database name are the values returned by the primary database when Replication Agent is initialized with the pdb_xlog init command.
The ra_helpdb command is valid when the Replication Agent instance is in the Admin, Replicating, or Replication Down state.
The ra_helpdb command is valid only after the RASD has been initialized, that is, only after you have executed pdb_xlog init.