Oracle DBA - Multitenant (CDB / PDB)

USE THIS SKILL WHENEVER the user mentions multitenant, container database / CDB, pluggable database / PDB, CDB$ROOT, PDB$SEED, open/close a PDB, PDB open mode (READ WRITE / READ ONLY / MOUNTED / RESTRICTED), SAVE STATE / DISCARD STATE, PDB clone or snapshot copy, PDB unplug / plug / manifest (.xml/.pdb), PDB relocation, CDB resource plan / inter-PDB shares, lockdown profile / PDB_LOCKDOWN, application container / application root / application PDB, PDB_PLUG_IN_VIOLATIONS, or the related views V$PDBS / CDB_PDBS / DBA_PDB_SAVED_STATES — EVEN IF they do not name the specific task. Covers PDB status monitoring, PDB open/close, save/discard state, local clone & snapshot copy, …