【多选题】
A An application root clone gets created automatically.
B The upgrade can be performed when connected either to CDBSROOT or toPDBSSEED
C After an application upgrade, the application container's PDBs remainsynchronized with the existing application root.
D The upgrade must be performed when connected to CDB$ROOT.
E An application name and version number must be specified to upgrade theapplication.
F After an application upgrade, the application container's PDBs areautomatically synchronized with the application root clone.
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