Backing Up Server Parameter Files with RMAN

RMAN automatically backs up the current server parameter file in certain cases. The BACKUP
SPFILE command backs up the parameter file explicitly. For example:

BACKUP DEVICE TYPE sbt SPFILE;

The SPFILE that is backed up is the one currently in use by the instance. If the instance
is started with a client-side initialization parameter file, then RMAN does not back up
anything when this command is used.

[@more@]