1. Which are three of the steps taken by Database Configuration Assistant(dbca) to clone a remote pluggable database(PDB) starting from Oracle 19c（）?
   A、leaving the cloned PDB in mount state
   B、creating a database link from CDB$ROOR in the local database to the PDB in the remote system that is to be cloned
   C、creating a database link from CDB$ROOR in the local database to CDB$ROOR in the remote system that is to be cloned
   D、opening the cloned PDB
   E、backing up the cloned PDB

答案:CDE

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