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Cron expression

When using the option Schedule using Cron, you can execute the Job at a specific interval using a cron expression. The cron expression makes it possible to use more advanced options. For example, scheduling every 'first' 'Friday' of every '2' months at 23:45h. This translates to the cron expression: 0 45 23 ? 1/2 FRI#1 *

In short, the cron expression is a string that consists of five to seven fields separated by white space that represents a set of times.

The following cron formats are supported:

  • MINUTES HOURS DAYS MONTHS DAYS-OF-WEEK
  • MINUTES HOURS DAYS MONTHS DAYS-OF-WEEK YEARS
  • SECONDS MINUTES HOURS DAYS MONTHS DAYS-OF-WEEK
  • SECONDS MINUTES HOURS DAYS MONTHS DAYS-OF-WEEK YEARS

The following values are supported:

Field name

Allowed values

Allowed special characters

Comments

Seconds

0 -59

* , - /

Optional

Minutes

0 - 59

* , - /

 

Hours

0 - 23

* , - /

 

Day of month

1 - 31

* , - / ? L W

 

Month

1 - 12 or JAN-DEC

* , - /

 

Day of week

0 - 6 or SUN-SAT

* , - / ? L #

 

Year

0001 - 9999

* , - /

Optional

For more information, please refer to existing documentation on cron expressions (for example, http://en.wikipedia.org/wiki/Cron).


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