Scheduling tasks
The Activities, Communities, Files, Forums, News, Search, and Wikis applications use the IBM WAS scheduling service for performing regular tasks.The scheduling service allows you to reliably process workloads using parallel processing, and to schedule resource-intensive tasks during off-peak hours when there is low traffic. For more information about the WAS scheduling service, see the WAS Information Center at: http://publib.boulder.ibm.com/infocenter/wasinfo/v7r0/topic/com.ibm.websphere.nd.multiplatform.doc/info/ae/ae/welc6tech_sch.html
You can use wsadmin commands to change the schedule by which a task runs or to disable a scheduled task altogether.
The WAS scheduling service is based on the Cron calendar, which uses predefined date algorithms to determine when a task should run. IBM Connections tasks are configured by default to run on a certain schedule. You can change the time at which the scheduled tasks run using wsadmin commands to edit the configuration files for the associated application. Cron schedule values use the following syntax:
second minute hourOfDay DayOfMonth Month DayOfWeek
Specify an asterisk (*) to indicate that you want to select all options. For example, if you specify * as the value of the DayOfWeek parameter, the task runs every day of the week. Specify 0 as the value of the parameter that represents the number of seconds because that parameter is ignored.
For example, specifying 0 30 3 ? * * instructs the task to run daily at 3:30 a.m. Specifying 0 30 2 ? * SUN instructs the task to run on Sunday mornings at 2:30 a.m. For more information on the Cron calendar, see the WAS Information Center at: http://publib.boulder.ibm.com/infocenter/wasinfo/v7r0/index.jsp?topic=/com.ibm.websphere.javadoc.doc/web/apidocs/com/ibm/websphere/scheduler/UserCalendar.html Examples of scheduler values
Use the examples provided here to construct your own Cron calendar scheduler values or copy and paste these values into your wsadmin commands to reuse them.
*/30 * * * * ?
- Every 30 seconds
0 */5 * * * ?
- Every 5 minutes starting at midnight. Be very sure to specify ‘0' for seconds
0 0 * * * ?
- Every hour
0 0 * ? * *
- Every hour on the hour
0 50 * * * ?
- Every hour at 50 minutes past the hour
0 15 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31 1,2,3,4,5,6,7,8,9,10,11,12 ?
- Every hour at 15 minutes past the hour
0 0 0-22/2 * *
- Every other hour starting at midnight.
0 0 4/5 * * ?
- Every 5 hours starting at 4 AM. This would run at 4:00, 9:00, 14:00, and 20:00.
0 0 0,8,16 * * ?
- Midnight, 8 AM, and 4 PM every day
0 0 11 * * ?
- Every day at 11 AM
0 0 0 * * ?
- Every day at midnight
0 0 2 ? * *
- Every day at 2 AM
0 0 12 ? * MON,TUE,WED,THU,FRI
- Weekdays at noon. MON and so on represent the days of the week.
0 0 23 ? * 2-6
- Monday through Friday at 11 PM
0 0 21 ? * 2-6/2
- Monday, Wednesday, and Friday at 9 PM
0 30 18 ? * SAT,SUN
- Weekend days at 6:30 PM
0 0 2 ? * SUN
- Weekly on Sundays at 2:00 AM
0 0 23 ? * SAT
- Weekly on Sat at 11 PM
0 0 * 1 * ?
- Every hour on the first day of every month
0 1 0 L * ?
- Last day of every month at 12:01 AM
0 59 23 L * ?
- Every month on last day at 11:59 PM
0 0 22 1 * ?
- First day of every month at 10 PM
0 45 15 2 1,4,7,10 ?
- Quarterly on the 2nd day of the month (January, April, July, October) at 3:45 PM
0 45 15 2 */3 ?
- Quarterly on the 2nd day of the month (January, April, July, October) at 3:45 PM
0 45 15 2 1 ? | 0 45 15 2 4 ? | 0 45 15 2 7 ? | 0 45 15 2 10 ?
- Quarterly on the 2nd day of the month (January, April, July, October) at 3:45 PM
0 30 3 1 1,7 ?
- January 1 and July 1 at 3:30 AM
0 30 3 2 1 ? | 0 30 3 1 7 ?
- January 2 and July 1 at 3:30 AM
0 0 0 4 7 ?
- Once a year at midnight on the 4th of July
0 30 9 4 7 ?
- Once a year at 9:30 AM on the 4th of July
0 45 15 2 1 ?
- Once a year on January 2 at 3:45 PM
To disable a scheduled task, use wsadmin commands.
- Clearing all scheduled tasks
Use administrative commands to clear the scheduler of all tasks.
Parent topic
Administer applicationsRelated concepts
Manage the Search index
Related tasks
Configure the widget life-cycle retry schedule
Manage Communities scheduled tasks
Configure news event log clean-up
Add scheduled tasks for Search
Completing activities that are not being used
Emptying the Activities trash on a schedule
Scheduling Activities statistics collection
Manage Forums scheduled tasks
Retrieve file content
Related reference
Files configuration properties