Avoid/Tune system queries

Question

Hi,
I find the following query in all of my AWRs.All the scheduler jobs are disabled in my DB.How do i avoid this query?If i cannot avoid how do i tune this query??Kindly assist.
select decode(bitand(a.flags, 16384), 0, a.next_run_date, a.last_enabled_time), a.obj#, decode(bitand(a.flags, 16384), 0, 0, 1), a.sch_job from (select p.obj# obj#, p.flags flags, p.next_run_date next_run_date, p.job_status job_status, p.class_oid class_oid, p.last_enabled_time last_enabled_time, p.instance_id instance_id, 1 sch_job from sys.scheduler$_job p UNION ALL select q.obj#, q.flags, q.next_run_date, q.job_status, q.class_oid, q.last_enabled_time, q.instance_id, 1 from sys.scheduler$_lightweight_job q UNION ALL select j.job, 0, from_tz(cast(j.next_date as timestamp), to_char(systimestamp, 'TZH:TZM')), 1, NULL, from_tz(cast(j.next_date as timestamp), to_char(systimestamp, 'TZH:TZM')), NULL, 0 from sys.job$ j where (:1 = 1) and (j.field1 is null or j.field1 = 0) and j.job not in (select v.id2 from v$lock v where v.type = 'JQ')) a where bitand(a.job_status, 3) = 1 and ((bitand(a.flags, 134217728 + 268435456) = 0) or (bitand(a.job_status, 1024) 0)) and bitand(a.flags, 4096) = 0 and a.instance_id is NULL and (a.class_oid is null or (a.class_oid is not null and a.class_oid in (select b.obj# from sys.scheduler$_class b where b.affinity is null))) and decode(bitand(a.flags, 16384), 0, a.next_run_date, a.last_enabled_time) = (select min(decode(bitand(c.flags, 16384), 0, c.next_run_date, c.last_enabled_time)) from (select r.flags flags, r.next_run_date next_run_date, r.job_status job_status, r.class_oid class_oid, r.last_enabled_time last_enabled_time, r.instance_id instance_id from sys.scheduler$_job r UNION ALL select s.flags, s.next_run_date, s.job_status, s.class_oid, s.last_enabled_time, s.instance_id from sys.scheduler$_lightweight_job s UNION ALL select 0, from_tz(cast(k.next_date as timestamp), to_char(systimestamp, 'TZH:TZM')), 1, NULL, from_tz(cast(k.next_date as timestamp), to_char(systimestamp, 'TZH:TZM')), NULL from sys.job$ k where (:2 = 1) and (k.field1 is null or k.field1 = 0) and k.job not in (select w.id2 from v$lock w where w.type = 'JQ')) c where bitand(c.job_status, 3) = 1 and ((bitand(c.flags, 134217728 + 268435456) = 0) or (bitand(c.job_status, 1024) 0)) and bitand(c.flags, 4096) = 0 and c.instance_id is NULL and (c.class_oid is null or (c.class_oid is not null and c.class_oid in (select d.obj# from sys.scheduler$_class d where d.affinity is null))))
select state, job_name from dba_scheduler_jobs;
STATE JOB_NAME
DISABLED PURGE_LOG
DISABLED ORA$AUTOTASK_CLEAN
DISABLED HM_CREATE_OFFLINE_DICTIONARY
DISABLED DRA_REEVALUATE_OPEN_FAILURES
DISABLED MGMT_CONFIG_JOB
DISABLED MGMT_STATS_CONFIG_JOB
DISABLED BSLN_MAINTAIN_STATS_JOB
DISABLED FGR$AUTOPURGE_JOB
Thanks.

Answer 1

What issue do you have? If you find internal queries in AWR (while at the same time you have crippled AWR by stopping all jobs) it just means your database doesn't display much activity.
I recommend
1 - stop chasing phantoms
2 - revert any measure you took to stop automatic jobs. They are not the issue.
Or if you really want this query to disappear: stop the job facility completely.
Sybrand Bakker
Senior Oracle DBA