【多选题】
A CDB$ROOT and PDBSSEED are automatically duplicated if a PDB is duplicated
B A user with SYSDBA or SYSBKUP must use RMAN logged in to a PDB in order to duplicate it.
C Two or more PDBS can be duplicated with the same RMAN DUPLICATE command
D The auxiliary instance is automatically created with ENABLE PLUGGABLE DATABASE TRUE
E All tablespaces belonging to a PDB must be duplicated when duplicating the PDB
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