SQL> DECLARE
  2    compat BOOLEAN := FALSE;
  3    BEGIN
  4    compat := DBMS_PDB.CHECK_PLUG_COMPATIBILITY(pdb_descr_file => '/tmp/pdb12.xml', pdb_name => 'pdb12');
  5    if compat then
  6    DBMS_OUTPUT.PUT_LINE('Is pluggable compatible? YES');
  7    else DBMS_OUTPUT.PUT_LINE('Is pluggable compatible? NO');
  8    end if;
  9  end;
 10  /
Is pluggable compatible? NO

PL/SQL procedure successfully completed.