What is the best backup method, using RMAN, for backing up the physical and standby database?



9.2.0.8 on HP-UX.

Primary DB on HOST1 (150Gb in size) and physical standby DB on HOST2.
Both hosts have their own tape library backup unit.

A low bandwidth link connects both hosts. Both hosts are in different
states.

It is important to keep backups of both databases on their respective
tape library.

Backups should go to disk first and then be backed up to tape.

What would be the best backup method?
.



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