Thursday, August 4, 2011

Duplexing backup with RMAN

RMAN provides a backup duplexing feature under which you can direct RMAN to make multiple copies of the backup pieces inside a backup set. Using a single backup command, you can make up to four copies of each backup piece in a backup set on four separate devices.Copy in this context means an exact copy of each of the backup pieces in a backup set. You can use the copies parameter with the configure command to specify the duplexing
of backup sets. Here’s an example showing how to use the configure ... backup copies

RMAN> configure datafile backup copies for device type disk to 2;

RMAN> configure channel device type disk format '/save1/%U','/save2/%U','save3/%U';