Description of alter_pluggable_database

ALTER PLUGGABLE DATABASE
  { pdb_unplug_clause
  | pdb_settings_clauses
  | pdb_datafile_clause
  | pdb_recovery_clauses
  | pdb_change_state
  | pdb_change_state_from_root
  | application_clauses
  | snapshot_clauses
  | prepare_clause
  | drop_mirror_copy
  | lost_write_protection
  | pdb_managed_recovery
  | [ ENABLE | DISABLE ] BACKUP
  }