set dba job to run every 4 hours

I want a job to run every 4 hours not every 4 hours after the previous run completed.

I am not sure what the SYSDATE should be.


SYSDATE+240/1440  this isn't what I want.
mw-hostingAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

slightwv (䄆 Netminder) Commented:
>>this isn't what I want.

That is 4 hours from now.  If that is the interval for the job, it will run every 4 hours.

What about this isn't what you want?
0
sdstuberCommented:
assuming you mean 00:00:00,  04:00:00,  08:00:00, 12:00:00,16:00:00, 20:00:00

try this...


trunc(sysdate)+(mod(to_char(sysdate,'hh'),6)+1)*4/24
0
sdstuberCommented:
also, you might want to look into using dbms_scheduler instead of dbms_job

BEGIN
    DBMS_SCHEDULER.create_job(
        job_name         => 'YOUR_EVERY_4_HOUR_JOB_NAME',
        job_type         => 'PLSQL_BLOCK',
        job_action       => 'begin null; end; ',  --- put your code here
        start_date       => TRUNC(SYSDATE)+1,  -- start tomorrow or whenever you want
        repeat_interval  => 'FREQ=daily;BYHOUR=0,4,8,12,16,20;BYMINUTE=0;BYSECOND=0',
        enabled          => TRUE,
        comments         => 'This ought to do it');
END;
0
Ultimate Tool Kit for Technology Solution Provider

Broken down into practical pointers and step-by-step instructions, the IT Service Excellence Tool Kit delivers expert advice for technology solution providers. Get your free copy now.

DavidSenior Oracle Database AdministratorCommented:
Nice example, Sean.
0
mw-hostingAuthor Commented:
I applied this:

'TRUNC(SYSDATE+4/24,''HH'')'

I don't have the option to use dbms_scheduler, thanks though.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
sdstuberCommented:
37898716 --- this allows for drift if your process takes more than an hour to run.
0
mw-hostingAuthor Commented:
Another option that allows every 4 hours, not depended on the hour provided.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Oracle Database

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.