题目内容

You are working on a CATDB database that contains an Oracle Database version 11.1 catalog schema owned by the user RCO11. The INST1 database contains an Oracle Database version 10.1 catalog schema owned by the user RCAT10. You want the RMAN to import metadata for database IDs 1423241 and 1423242, registered in RCAT10, into the recovery catalog owned by RCO11. You executed the following RMAN commands: RMAN> CONNECT CATALOG rco11/password@catdb RMAN> IMPORT CATALOG rcat10/oracle@inst1; What happens when you execute the above commands?（）

A. They deregister all databases registered in the RCAT10 catalog.
B. They import metadata for all registered databases in the RCAT10 database.
C. They register all the RCAT10-catalog registered databases in the RCO11 catalog.
D. They overwrite all stored scripts in the RCO11 catalog with the same name as that in the RCAT10 catalog.

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