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Physical vs Logical standby database

646362Jun 21 2008 — edited Jun 23 2008
In the Oracle HA guide, it is mentioned that we must take Logical backup "in addition" to Physical backup (not instead of Physical Backup)

If I run have two systems i.e a Primary System and a Logical standby database system , is it not sufficient protection ? If the primary fails, can I not recover the primary system using the nightly backup I take from the Logical Standby Database.

If it is not sufficient protection, what exactly I will lose ?

Assume I take the nightly complete hot backup backup from the Logical Standby Database instead of the Primary System to save CPU cycles of the primary system.

In other words, it is said that "physical standby database provides zero data loss without any allowance for data divergence" -- What exactly is meant here ?

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Locked on Jul 21 2008
Added on Jun 21 2008
#performance-availability, #recovery-manager-rman
8 comments
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