The interval specified by a cron expression must be a multiple of 60. If you want to trigger a job at an interval of 40 minutes, you cannot use cron expressions. To resolve this problem, you can use fixed-rate scheduling. Fixed-rate scheduling is suitable for round-robin scheduling and fixed-rate expressions are simple. However, you cannot use fixed-rate scheduling to trigger a job at a second granularity.
Examples of fixed-rate jobs
You can configure fixed-rate scheduling when you create a job. For more information about how to create a job, see Create a job. This topic describes how to configure fixed-rate scheduling when you create a job.
- Go to the Timing configuration wizard page. For more information, see Create a job.
- On the Timing configuration wizard page of the Create task wizard, configure the scheduling parameters and click Next Step.
- Select fixed_rate from the Time type drop-down list.
- Specify a value for the Fixed frequency parameter. Note The value must be greater than 60. Unit: seconds.