21:35:20 SQL> select count(*) from t_3 order by created;
select count(*) from t_3 order by created
                                        *
ERROR at line 1:
ORA-03113: end-of-file on communication channel
Process ID: 392578
Session ID: 1873 Serial number: 2636


Elapsed: 00:00:00.00

 exec dbms_resource_manager.create_plan_directive(plan=>'wgz_main_plan1',group_or_subplan=>'low_priority_cg',max_idle_time=>60);