| FRAMES | NO FRAMES | Overview | Examples |
Cron expressions allow you to define complex date and time combinations, such as "At 10:30 Tuesday through Sunday". These expressions originated with UNIX. ArcGIS Data Reviewer server schedules job executions with cron expressions. The expressions allow time, dates, and wildcards or special characters. Cron expressions follow this format:
seconds minutes hours day-of-month month day-of-week (year)
Each time/date component is separated by a space. The first six components are required.
| Component | Domain | Special characters |
|---|---|---|
| seconds | 0-59 | , - / |
| minutes | 0-59 | * , - / |
| hours | 0-23 | , - / |
| day-of-month | 1-31 | , - ? / L W C |
| month | 1-12 or JAN-DEC | , - / |
| day-of-week | 1-7 or SUN-SAT | , - ? / L # |
| Year (optional) | 1970-2099 | , - / |
You can use special characters or wildcards to customize your scheduled jobs. The following table shows special characters and possible combinations. Data Reviewer Server does not support cron expressions that execute more frequently than once every 15 minutes.
| Character | Explanation | Example | Example Explanation |
|---|---|---|---|
| * | all values | 0 0 10 * * ? | 10:00 o'clock of every day of every month of any day of the week |
| ? | no specific value | 0 0 10 * * ? | 10:00 o'clock of every day of every month of any day of the week |
| - | range | 0 0 8-12 * * ? | 8-12 of every day of every month of any day of the week |
| , | list of values | 0 0 8,10,12 * * ? | 8, 10, 12 hours of every day of every month of any day of the week |
| / | increments | 0 0/20 * * * ? | Minutes 0, 20, 40 of every hour of every day of every month of any day of the week |
| L | Last day of week or month | 0 0 18 L * ?
0 0 18 ? * L 0 0 18 ? * 1L |
18:00 hour of the last day of the month.
18:00 hour of the last day of the week (SAT, 7) of every month 18:00 hour of the last Sunday (1) of every month |
| W | weekday (MON-FRI) nearest the given day | 0 0 10 10W * ? | 10:00 on the closest weekday to the 10th of every month |
| LW | Last weekday of the month | 0 0 10 LW * ? | 10:00 on the last weekday of every month |
| # | nth day name day of the month | 0 55 10 ? * 2#2 | 10:55 on the second Monday of every month |
| Expression | Explanation |
|---|---|
| 0 0 12 * * ? | Execute at 12pm (noon) every day |
| 0 15 10 ? * * | Execute at 10:15am every day |
| 0 15 10 * * ? | Execute at 10:15am every day |
| 0 15 10 * * ? * | Execute at 10:15am every day |
| 0 15 10 * * ? 2015 | Execute at 10:15am every day during the year 2015 |
| 0 0/15 14,18 * * ? | Execute every 15 minutes starting at 2pm and ending at 6:00pm, every day |
| 0 10,44 14 ? 3 WED | Execute at 2:10pm and at 2:44pm every Wednesday in the month of March. |
| 0 15 10 ? * MON-FRI | Execute at 10:15am every Monday, Tuesday, Wednesday, Thursday and Friday |
| 0 15 10 15 * ? | Execute at 10:15am on the 15th day of every month |
| 0 15 10 L * ? | Execute at 10:15am on the last day of every month |
| 0 15 10 ? * 6L | Execute at 10:15am on the last Friday of every month |
| 0 15 10 ? * 6L 2012-2015 | Execute at 10:15am on every last friday of every month during the years 2012, 2013, 2014 and 2015 |
| 0 15 10 ? * 6#3 | Execute at 10:15am on the third Friday of every month |