ORA-12012 ORA-06502 ORA-06512 ORA-06512

This is one of the alert found on an 11.2.0.3 database.

The alert error is :-
Errors in file /oracle/ora_ctl/oraadmin/ORCLDB/diag/rdbms/orcldb/ORCLDB_1/trace/ORCLDB_1_j001_25510.trc:
ORA-12012: error on auto execute of job "SYS"."BSLN_MAINTAIN_STATS_JOB"
ORA-06502: PL/SQL: numeric or value error
ORA-06512: at "DBSNMP.BSLN_INTERNAL", line 2073
ORA-06512: at line 1

Cause for this error :-

Inconsistent information on DBSNMP.BSLN_BASELINES table.

Query the table

SQL> select * from DBSNMP.BSLN_BASELINES;

      DBID INSTANCE_NAME    BASELINE_ID BSLN_GUID                        TI A STATUS           LAST_COMP
---------- ---------------- ----------- -------------------------------- -- - ---------------- ---------
3757044803 ORCLDB                   0 A8AF70B18D010F36F77705A08EEFFD58 NX Y ACTIVE           29-SEP-13
3757044803 ORCLDB_1                 0 51587F1AC1AC5A6F68F96CC9F467CE7F HX Y ACTIVE           29-SEP-13

We can see there are two entries in the table. In this database, the current instance name is ORCLDB_1. So we need to remove the other entry.

SQL> DELETE FROM DBSNMP.BSLN_BASELINES WHERE INSTANCE_NAME='ORCLDB';

1 row deleted.

SQL> commit;

Commit complete.

Now execute the job manually.

SQL> exec dbms_scheduler.run_job('BSLN_MAINTAIN_STATS_JOB',false);

PL/SQL procedure successfully completed.

The issue got fixed. You can query the Job run details and find the status :- 

SQL> select log_date,status from dba_scheduler_job_run_details

where job_name='BSLN_MAINTAIN_STATS_JOB' order by log_date;  2

LOG_DATE                                                                    STATUS

--------------------------------------------------------------------------- ------------------------------

09-FEB-14 12.00.02.223379 AM +00:00                                         FAILED

16-FEB-14 12.00.01.233061 AM +00:00                                         FAILED

23-FEB-14 12.00.01.376403 AM +00:00                                         FAILED

02-MAR-14 12.00.01.187070 AM +00:00                                         FAILED

06-MAR-14 01.03.48.689335 PM +00:00                                         SUCCEEDED