Oracle: Init parameter AWR_PDB_AUTOFLUSH_ENABLED

The value of awr_pdb_autoflush_enabled controls whether automatic AWR snapshots for indivdual PDBs are enabled or disabled.

By default, automatic snapshots are enabled for a CDB but disabled for PDBs.

In order to set automatic snapthos for a PDB, the value of awr_pdb_autoflush_enabled must be set to true when connected to the PDB.