offloading backup of primary database using standby database.

Hi,

I have a question regarding offloading backup of primary database using standby database.

For example we will consider primary database PRIM on Host A and physical standby database STBY on Host B.

We are not using active standby option in our environment so STBY database will be in mounted mode.

I use following RMAN command for taking backup from standby database:

connect target sys/***@STBY

 connect catalog rmancat/***@RMANCAT

 backup database plus archivelog format '/oracle/stage/RMAN/%U';

 This will create STBY database backup on HOST B at location '/oracle/stage/RMAN/'

Now NFS filessystem '/oracle/stage/RMAN/' is also available on HOST A server.