Trace files generated in Bulk in BDUMP

Same following error in all trace file which is generated in every minute..

Error in Alert log ORA-07445 ORA-12012 ORA-00604 ORA-01427 ORA-06512
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Errors in file c:\oracle\product\10.2.0\admin\ari0708\bdump\ari5_j000_5996.trc:
ORA-07445: exception encountered: core dump [ACCESS_VIOLATION] [kghalp+288] [PC:0x4F0F13E] [ADDR:0x1E] [UNABLE_TO_READ] []
ORA-12012: error on auto execute of job 1
ORA-00604: error occurred at recursive SQL level 1
ORA-01427: single-row subquery returns more than one row
ORA-06512: at line 2
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by disabling the tracing in init.ora, bdump trace generation can not be stopped. bdump trace is generated due to following reasons

1. Software Bugs
2. High RAM Usage.
3. OS Limits
4. Shared pool corruptions due to I/o slaves error (Refer Metalink note:1404681)
5. SGA corruption (Refer Metalink note: 5202899/5736850)
6. Library cache lock by query coordinator (Refer Metalink note: 3271112)
7. Hardware Errors
8.Oracle Block Corruptions
9. Program Errors

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ORA-12012: error on auto execute of job 1

select * from dba_jobs;
select * from dba_jobs_running;
emd_maintenance has job_id=1 and running in some seconds

-------Solution--------
sqlplus sys/oracle@ari0708srv as sysdba

exec sysman.emd_maintenance.remove_em_dbms_jobs;

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