RE: backing up rman catalog for disaster recovery

I am setting up a disaster recovery site and I was thinking about the best way to do this.

My theory is that I would like to not just use another recovery catalog on the DR site to backup my primary catalog but to somehow keep these catalogs constantly in-synch so when I do need to do complete recovery and only have the secondary rman catalog available - I wouldn't have to recover the catalog as all of the previous backups would be found there.

So....should I do this using Oracle Data Guard on my disaster recovery site catalog or backup rman then restore as my first procedure? Any advice? =20

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