RESYNC CATALOG

Question

I'm looking at the following reference and a bit confused about the Full Resynchronization process
http://docs.oracle.com/cd/B28359_01/backup.111/b28273/rcmsynta038.htm
From one hand it says :
"you run RESYNC CATALOG When You made changes to the physical structure of the target database such as adding or dropping a tablespace. As with log archiving, *the recovery catalog is not updated automatically when the physical schema changes*"
On the other hand, a few line later iit says :
RMAN performs a full resynchronization after structural changes to database (adding or dropping database files, creating new incarnation, and so on)
Thank you.

Answer 1

Hello,
"you run RESYNC CATALOG When You made changes to the physical structure of the target database such as adding or dropping a tablespace. As with log archiving, *the recovery catalog is not updated automatically when the physical schema changes*" it means that it's good practise to run RESYNC CATALOG manually after changes to physical structer of target database and if you know that you are not running any RMAN script after the changes - there isn't any background connection between target database and catalog if you are not running RMAN (connected to target + catalog)
On the other hand, a few line later iit says :
RMAN performs a full resynchronization after structural changes to database (adding or dropping database files, creating new incarnation, and so on) if you will be connected to target database and catalog using RMAN, RESYNC CATALOG will be run automatically after structural changes (if you will have new archived logs - 10 and more, resync will run too).
Lukas