What's in this article?
What are Cron Expressions?
In Avenue you can create monitor run schedules based on Cron expressions. This enables you to formulate specific intervals for your monitors to run on. For instance, you can set a monitor to run only on business days, at 3PM by inputting 0 15 * * MON-FRI.
See below for all of the available interval options!
Note: Below is a breakdown of Cron Expressions and some examples, however if you need more help ask Copilot! For example, I asked Copilot to help me create the Cron Expression I showed above:
How to add Cron Expressions to your Monitors
1. Setting up the Signal
Head to the Set up the Signal section on the Monitor Creation/Update page.
2. Changing the Alert Schedule Type
Click the dropdown and select using cron expression.
3. Add Cron Expression
Add in your Cron Expression and select your timezone.
The info below was taken from Oracles Documentation on Cron Expressions, head over there to learn more!
Cron Expression Allowed Fields and Values
Name | Required | Allowed Values | Allowed Special Characters |
Seconds | Y | 0-59 | , - * / |
Minutes | Y | 0-59 | , - * / |
Hours | Y | 0-23 | , - * / |
Day of month | Y | 1-31 | , - * ? / L W C |
Month | Y | 0-11 or JAN-DEC | , - * / |
Day of week | Y | 1-7 or SUN-SAT | , - * ? / L C # |
Year | N | empty or 1970-2099 | , - * / |
Cron Expression Examples
Expression | Means |
0 0 12 * * ? | Fire at 12:00 PM (noon) every day |
0 15 10 ? * * | Fire at 10:15 AM every day |
0 15 10 * * ? | Fire at 10:15 AM every day |
0 15 10 * * ? * | Fire at 10:15 AM every day |
0 15 10 * * ? 2005 | Fire at 10:15 AM every day during the year 2005 |
0 * 14 * * ? | Fire every minute starting at 2:00 PM and ending at 2:59 PM, every day |
0 0/5 14 * * ? | Fire every 5 minutes starting at 2:00 PM and ending at 2:55 PM, every day |
0 0/5 14,18 * * ? | Fire every 5 minutes starting at 2:00 PM and ending at 2:55 PM, AND fire every 5 minutes starting at 6:00 PM and ending at 6:55 PM, every day |
0 0-5 14 * * ? | Fire every minute starting at 2:00 PM and ending at 2:05 PM, every day |
0 10,44 14 ? 3 WED | Fire at 2:10 PM and at 2:44 PM every Wednesday in the month of March |
0 15 10 ? * MON-FRI | Fire at 10:15 AM every Monday, Tuesday, Wednesday, Thursday and Friday |
0 15 10 15 * ? | Fire at 10:15 AM on the 15th day of every month |
0 15 10 L * ? | Fire at 10:15 AM on the last day of every month |
0 15 10 ? * 6L | Fire at 10:15 AM on the last Friday of every month |
0 15 10 ? * 6L | Fire at 10:15 AM on the last Friday of every month |
0 15 10 ? * 6L 2002-2005 | Fire at 10:15 AM on every last friday of every month during the years 2002, 2003, 2004, and 2005 |
0 15 10 ? * 6#3 | Fire at 10:15 AM on the third Friday of every month |
0 0 12 1/5 * ? | Fire at 12 PM (noon) every 5 days every month, starting on the first day of the month |
0 11 11 11 11 ? | Fire every November 11 at 11:11 AM |
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