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backup set vs. Image Copy [message #153664] Tue, 03 January 2006 10:30 Go to next message
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

Re: backup set vs. Image Copy [message #153830 is a reply to message #153664] Wed, 04 January 2006 05:37 Go to previous messageGo to next message
waseem_aijaz
Messages: 16
Registered: December 2005
Location: Kingdom of Saudi Arabia
Junior Member
Backupset is better than Image copy.
Re: backup set vs. Image Copy [message #196095 is a reply to message #153664] Wed, 04 October 2006 02:41 Go to previous messageGo to next message
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.
Re: backup set vs. Image Copy [message #196148 is a reply to message #196095] Wed, 04 October 2006 06:03 Go to previous message
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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