RMAN different type of channel and the restoration

Hello

I read http://docs.oracle.com/cd/B28359_01/backup.111/b28273/rcmsynta004.htm

and

http://docs.Oracle.com/CD/E11882_01/backup.112/e10642/rcmdupad.htm#BRADV441

I would like to know if anyone knows about the types of channels used with rman and between restoration and duplicate.

1-interview (ok is only for the purpose of maintenance, I/O is not allowed) I guess the process need fewer resources to the host that is connected to. But how this work? Where is its configuration?

Channel 2-clone (is the same as the aux channel?) Is perhaps only for the old version?

3-auxiliary channel (ok, duplicate), but why should be clear?  What is the difference if I use a channel normal sbt?

4. what happens if I use the aux channel to restore Strip form of database without database duplicate?

5. where is the difference between restoring database to a tape with a valid backup and duplicate database from the same band?

Thank you and best regards.

Fran

A channel "auxiliary" is when you read a backup and in writing (e.g. Creation/restoration) a database that is a copy of the target (which is the database that has been in the original backup).

Normally, you would define disk or sbt channels when you create a backup of a database.

The difference between COPYING and restoration, is that two COPIES more than a RESTORATION.  It automates certain tasks (create and configure the spfile, recover the database, rename the database).  A RESTORATION is to the same database (it is not expected to rename the database).  If a restore is not using an auxiliary channel.

Hemant K Collette

Tags: Database

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