Tag: job_queue_processes

Schedule Jobs Not Running after Instance Restarted

Oracle database scheduler jobs have been working fine. Since the database was upgraded, every time when database was bounced, then scheduler jobs stopped running.

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ORA-02800: Requests timed out from Oracle Scheduler Job

Get errors from running an Oracle scheduler job:

SQL> exec dbms_scheduler.run_job(job_name=>'BATCH_JOB', 
                                 use_current_session=>false);
BEGIN dbms_scheduler.run_job(job_name=>'BATCH_JOB', 
                                 use_current_session=>false); END;

*
ERROR at line 1:
ORA-02800: Requests timed out
ORA-06512: at "SYS.DBMS_ISCHED", line 196
ORA-06512: at "SYS.DBMS_SCHEDULER", line 486
ORA-06512: at line 1

WORKAROUND

1)check parameter to make sure not zero.

SQL> show parameter job_queue_processes

NAME                                 TYPE     VALUE
-------------------------------- ------------ ------------------
job_queue_processes                integer    100

2) Bounce the database due to the bugs.

3) Rerun the job successfully.

SQL> exec dbms_scheduler.run_job(job_name=>'BATCH_JOB', 
use_current_session=>false);

PL/SQL procedure successfully completed.