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backup set vs. Image Copy [message #153664]

Tue, 03 January 2006 10:30

toshidas2000
Messages: 120
Registered: November 2005

Senior Member

All
I just read the manual of backup and recovery through RMAN.
I read, we can have to types of backup, backupset and Image copy.

I will be doing backup of a database,through RMAN, it will be backed up on disk first and then to tape.

Currently I do a online script backup.

Which backup will be faster (image copy or backupset)

Which backup will save backup space (image copy or backupset).

I read somewhere you cannot put image copy to tape from disk.

Please help.

Thanks
Toshi

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Re: backup set vs. Image Copy [message #153830 is a reply to message #153664]

Wed, 04 January 2006 05:37

waseem_aijaz
Messages: 16
Registered: December 2005
Location: Kingdom of Saudi Arabia

Junior Member

Backupset is better than Image copy.

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Re: backup set vs. Image Copy [message #196095 is a reply to message #153664]

Wed, 04 October 2006 02:41

parthokonar
Messages: 17
Registered: September 2006
Location: india

Junior Member

There are two types of backups in rman backupset and image copy backupset takes less space as it does not use unused blocks. image copy is same as that of os copy but rman image copy takes into consideration the oracle block size.

if you want to restore it to tape then go for backupset.

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Re: backup set vs. Image Copy [message #196148 is a reply to message #196095]

Wed, 04 October 2006 06:03

ebrian
Messages: 2794
Registered: April 2006

Senior Member

RMAN also offers PROXY copy as a backup type. In addition, a careful distinction needs to be made about unused block backups. 9i RMAN WILL backup a unused block that has been previously written to, but 10g RMAN will not.

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