How to enable/disable DBA auto task jobs?

Jobs
Automatic Optimizer Statistics Collection -> Gathers stale or missing statistics
Automatic Segment Advisor -> Identifies segments that reorganized to save space
Automatic SQL Tuning Advisor -> Tune high load SQL

Check auto tasks
SQL> SELECT client_name, status FROM dba_autotask_client;

To disable all auto task jobs
SQL> EXEC DBMS_AUTO_TASK_ADMIN.disable;

To enable all auto task jobs
SQL> EXEC DBMS_AUTO_TASK_ADMIN.enable;

To disable a spesific task
SQL> EXEC DBMS_AUTO_TASK_ADMIN.DISABLE(client_name=>'sql tuning advisor', operation=>NULL, window_name=>NULL);

SQL> EXEC DBMS_AUTO_TASK_ADMIN.DISABLE(client_name=>'auto space advisor', operation=>NULL, window_name=>NULL);

SQL> EXEC DBMS_AUTO_TASK_ADMIN.DISABLE(client_name=>'auto optimizer stats collection', operation=>NULL, window_name=>NULL);

To enable a spesific task
SQL> EXEC DBMS_AUTO_TASK_ADMIN.ENABLE(client_name=>'sql tuning advisor', operation=>NULL, window_name=>NULL);

SQL> EXEC DBMS_AUTO_TASK_ADMIN.ENABLE(client_name=>'auto space advisor', operation=>NULL, window_name=>NULL);

SQL> EXEC DBMS_AUTO_TASK_ADMIN.ENABLE(client_name=>'auto optimizer stats collection', operation=>NULL, window_name=>NULL);

Ref: https://smarttechways.com/2015/09/03/disable-and-enable-auto-task-job-for-11g-and-12c-version-in-oracle/