My database 12.2 runnig very slow

Hi Guys,

My Oracle database version 12.2.0.1 is running very slow since this weekend  after started seing this below errors in my alertlog

WARNING: too many parse errors, count=236 SQL hash=0x750004bb

PARSE ERROR: ospid=107238, error=933 for statement:

2020-08-22T23:46:38.741787+00:00

DELETE FROM wri$_adv_sqlt_rtn_planWHERE task_id = :tid AND exec_name = :execution_name

Additional information: hd=0x117a5a5a8 phd=0x117a5a9d0 flg=0x28 cisid=0 sid=0 ciuid=0 uid=0

2020-08-22T23:46:38.741912+00:00

----- PL/SQL Call Stack -----

  object      line  object

  handle    number  name

0x15752b000       259  type body SYS.WRI$_ADV_SQLTUNE.SUB_DELETE_EXECUTION