Cron job with wrong schedule

[joaoalvesjr]

cron setup

56 09 23 6 5 /u01/scripts/imp_UseallCA_E2.sh

Cron Log

Jun 30 09:56:01 svsgp23 CROND[3167812]: (oracle) CMD (/u01/scripts/imp_UseallCA_E2.sh)
Jun 30 09:56:03 svsgp23 CROND[3167810]: (oracle) CMDOUT (Import: Release 19.0.0.0.0 - Production on Fri Jun 30 09:56:03 2023)
Jun 30 09:56:03 svsgp23 CROND[3167810]: (oracle) CMDOUT (Version 19.17.0.0.0)
Jun 30 09:56:03 svsgp23 CROND[3167810]: (oracle) CMDOUT ()
Jun 30 09:56:03 svsgp23 CROND[3167810]: (oracle) CMDOUT (Copyright (c) 1982, 2019, Oracle and/or its affiliates. All rights reserved.)

You can verify that the JOB has been executed.
The date was ignored and the day of the week prevailed.
Why? How do I resolve this?

[TrevorH]

56 09 23 6 5

You've specified all the possible fields and some conflict with others. So you've told that to run at 59 minutes past 09 hours on the 23rd of the 6th month *and* on the 5th day of the week (Friday). It is telling you that it decided to run it on Friday and ignore the bit about the 23rd. If it only ran on Friday the 23rd then it would be about another 7 years until it next ran (when the 23rd June is next on a Friday).

See man 5 crontab for all the details of how to specify an entry.

[joaoalvesjr]

I want to represent a schedule that runs only on 6/23 at 9:56 am.
When I did that, it ran on 6/23 and 6/30.

[TrevorH]

You also told it to run on Friday so it did.

[joaoalvesjr]

The problem is there. It ignored the date parameter and considered the day of the week.
As you yourself identified the next execution should be in 7 years. If you consider all the parameters.

[lightman47]

?

I am now a little confused. The Day of Month is ignored if a Day of Week is entered?

[TrevorH]

Read the fine Man page

Note: The day of a command's execution can be specified in the following two fields — 'day of month', and 'day of
week'. If both fields are restricted (i.e., do not contain the "*" character), the command will be run when either
field matches the current time. For example,
"30 4 1,15 * 5" would cause a command to be run at 4:30 am on the 1st and 15th of each month, plus every Friday.

[lightman47]

Strange way to do it, but thank you.