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  Oracle Tips by Burleson

Oracle Job Scheduling

Chapter 3 - Time-Based Job Scheduling

Complex Date Rules for Job Execution



6:00 AM every day.

‘trunc(sysdate) + 1 + 6/24’
‘trunc(systimestamp) + 1 + 6/24’

‘trunc(sysdate) + interval ‘‘1 6’’ day to hour ’
‘trunc(systimestamp) + interval ‘‘1 6’’ day to hour’

‘freq=daily; byhour=6; byminute=0; bysecond=0;’

Next Run Date: 01-JAN-2004 06:00:00
Next Run Date: 02-JAN-2004 06:00:00
Next Run Date: 03-JAN-2004 06:00:00
Next Run Date: 04-JAN-2004 06:00:00
Next Run Date: 05-JAN-2004 06:00:00

Every hour.

‘sysdate + 1/24’
‘systimestamp + 1/24’

‘sysdate + interval ‘’1’’ hour’
‘systimestamp + interval ‘’1’’ hour’


Next Run Date: 01-JAN-2004 04:04:32
Next Run Date: 01-JAN-2004 05:04:32
Next Run Date: 01-JAN-2004 06:04:32
Next Run Date: 01-JAN-2004 07:04:32
Next Run Date: 01-JAN-2004 08:04:32

The above text is an excerpt from:

Oracle Job Scheduling
Creating Robust Task Management with dbms_job and Oracle10g dbms_scheduler

ISBN 0-9744486-6-4

by Dr. Timothy S. Hall

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