Topic: Database Administration >> data purging
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| black |
Posted: Oct 03, 2007 03:12:46 AM |
Total Post: 14
Joined: Aug, 2007
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hi friends,
i need data purging scripts.i want to delete the old data.can anybody send me the scripts as soon as possible |
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 Billy |
| Posted: Oct 05, 2007 11:51:15 AM |  |
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Total Post: 8
Joined: Jun, 2007
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The Purging Process permanently deletes the records from a table after a specified period of time. According to my requirement I'll purge the 90 days old records from the table.
The mentioned below Oracle Built-In Packages, Procedures and Jobs will perform the purging tasks.
login With sys;
------------------
1 Create Schedule:
------------------
A schedule defines the frequency and date/time specifics of the start-time for the job.
Begin
dbms_scheduler.create_schedule
(
schedule_name => 'purging_record_schedule',
repeat_interval => 'FREQ=HOURLY; INTERVAL=24',
comments => 'Purge Records after Every 24-Hours'
);
end;
First we create a schedule in which we set the interval parameter which shows the specific time when the Command will execute. In the above schedule the JOB will execute after every 24 hours.
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2 Create JOB:
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A job defines when a specific task and command will be started.
BEGIN
DBMS_SCHEDULER.CREATE_JOB (
job_name => 'purge_interval_job'
,job_type => 'PLSQL_BLOCK'
,job_action => 'BEGIN
Delete from schema.tablename where
ROUND(((sysdate-startdate)*24)/24) >= 90;
COMMIT;
END;'
,schedule_name => 'purging_record_schedule'
,enabled => TRUE
,comments => 'Purge 90 Days Old Records'
);
END;
In the above created job the JOB Action parameter will delete the 90 old day’s records from the table.
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3 RUN JOB:
-------------------
begin
dbms_scheduler.run_job('purge_interval_job');
end;
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4 DROP JOB:
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begin
DBMS_SCHEDULER.DROP_JOB ( job_name => 'purge_interval_job');
end;
Show all jobs and their attributes:
select * from dba_scheduler_jobs;
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