The only thing I can think of that would cause such
behaviour is if for some reason you were actually running a cumulative
incremental backup. From the script you've shown, that doesn't appear to
be the case, but could you check the incremental_level of the rc_backup_set view
in your recovery catalog and verify?
I'm having some issues with a client's RMAN
backup. They're on Oracle 8.1.7.4, Solaris 8. It's a weekly full
backup, and they're backing up ~1.5TB to disk, and the longer the instance is
up, the longer the backup takes.
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