Scheduling Connectors Using Cron Expressions

As an alternative to specifying a simple interval on the Schedule tab, you can schedule Connectors using sophisticated Cron expressions. To specify a Cron expression, complete the Schedule tab by entering a proper Cron expression in the provided field and select the Use Cron Expression checkbox to confirm the choice.

When the schedule is saved, the Cron Expression provided is validated by the server to ensure the definition is a valid Cron expression.

Note that an invalid expression can prevent the server from starting. There is no guarantee that the validation check will catch every invalid expression. Also note that Run on Startup can delay or prevent the server from starting, and should be set to false.

Cron Expressions

There are several special predefined values which can be used to substitute the CRON expression.

Entry	Description	Equivalent To
@yearly (or @annually)	Run once a year, midnight, Jan. 1st	0 0 1 1 *
@monthly	Run once a month, midnight, first of month	0 0 1 * *
@weekly	Run once a week, midnight on Sunday	0 0 * * 0
@daily	Run once a day, midnight	0 0 * * *
@hourly	Run once an hour, beginning of hour	0 * * * *
@reboot	Run at startup	@reboot

* * * * *

┬ ┬ ┬ ┬ ┬

│ │ │ │ │

│ │ │ │ └───── day of week (0 - 6) (0 is Sunday, or use names)

│ │ │ └────────── month (1 - 12)

│ │ └─────────────── day of month (1 - 31)

│ └──────────────────── hour (0 - 23)

└───────────────────────── min (0 - 59)

For Cron expression configuration. see: