（多选题）
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 commands： RMAN> CONNECT CATALOG rco11/password@catdb RMAN> IMPORT CATALOG rcat10/oracle@inst1 NO UNREGISTER； Which two statements are true regarding the tasks accomplished with these commands？（）
A They import all metadata from the RCAT10 catalog.
B They unregister the database from the RCAT10 catalog.
C They do not register the databases registered in the RCAT10 catalog.
D They register all databases registered in the RCAT10 catalog.
正确答案
答案解析
略
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