Tuesday, May 29, 2012

Difference between 3 types of Restoring modes.


S.No
With Recovery
With Norecovery
Standby\Readonly
1
Leave the database in online mode.
Leave the database in restoring mode.
Leave the database in
 readonly mode.
2
No further restore is possible.
Further restore is possible.
Further restore is possible.
3
User can able to access
Users can’t.
Users can able to read the
 databases.
4
Rollback the uncommitted transactions
Does not rollback the uncommitted transactions
It undoes uncommitted transactions
, but saves the undo actions in a
 standby file so that recovery effects
 can be reverted.


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