Oracle Multitenant plugin
the file names in the multitenant manifest or in the full transportable database import command must match all files exactly for the operation to complete
There are some difficulties when OMF/ASM is used, files are copied, and a physical standby database is in place. There have been improvements made to the multitenant plugin operation on both the primary and standby environments, however at this time additional work must still be done on the standby database when a full transportable database import operation is performed.
RMAN has been enhanced so that, when copying files between databases it recognizes the GUID and acts accordingly when writing the files.
* If the clone/auxiliary instance being connected to for clone operations is a CDB root, the GUID of the RMAN target database is used to determine the directory structure to write the datafiles. Connect to the CDB root as the RMAN clone/auxiliary instance when the source database should be a 12c non-CDB or PDB that is going to be migrated and plugged into a remote CDB as a brand new PDB. This will ensure that the files copied by RMAN will be written to the GUID directory of source database for the migration.
* If the clone/auxiliary instance being connected to for clone operations is a PDB, the GUID of the auxiliary PDB will be used to determine the directory structure to write the datafiles. Connect to the destination PDB as the RMAN clone auxiliary instance when the source database is a 12c non-CDB or PDB that requires a cross platform full transportable database import and the data and files will be imported into an existing PDB. This will ensure the files copied by RMAN will be written to the GUID directory of the PDB target database for the migration.