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Oracle Job Scheduling

Chapter 3 - Time-Based Job Scheduling

Complex Date Rules for Job Execution
 

INTERVAL

EXPRESSION

Every hour, on the hour.

‘trunc(sysdate, ‘’HH24’’) + 1/24’
‘trunc(systimestamp, ‘’HH24’’) + 1/24’

‘trunc(sysdate, ‘’HH24’’) + interval ‘’1’’ hour’
‘trunc(systimestamp, ‘’HH24’’) + interval ‘’1’’ hour’

‘freq=hourly; byminute=0; bysecond=0;’

Next Run Date: 01-JAN-2004 04:00:00
Next Run Date: 01-JAN-2004 05:00:00
Next Run Date: 01-JAN-2004 06:00:00
Next Run Date: 01-JAN-2004 07:00:00
Next Run Date: 01-JAN-2004 08:00:00

Every Monday at 9:00 AM

‘trunc(next_day(sysdate, ‘’MONDAY’’)) + 9/24’
‘trunc(next_day(systimestamp, ‘’MONDAY’’)) + 9/24’

‘trunc(next_day(sysdate, ‘’MONDAY’’)) + interval ‘’9’’ hour’
‘trunc(next_day(systimestamp, ‘’MONDAY’’)) + interval ‘’9’’hour’

‘freq=weekly; byday=mon; byhour=9; byminute=0; bysecond=0;’

Next Run Date: 05-JAN-2004 09:00:00
Next Run Date: 12-JAN-2004 09:00:00
Next Run Date: 19-JAN-2004 09:00:00
Next Run Date: 26-JAN-2004 09:00:00
Next Run Date: 02-FEB-2004 09:00:00


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
 

http://www.rampant-books.com/book_2005_1_scheduling.htm


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