Oracle-L: Re: Unix - scheduling

From: <lembark_at_wrkhors.com>
Date: Tue, 02 Jul 2002 07:13:23 -0800
Message-ID: <F001.0048DD97.20020702071323@fatcity.com>

Nils Höglund <nils_at_naqua.se> on 07/02/02 03:28:20 -0800

> 0 */4 * * * your_command

$ man 5 cronttab;

The time and date fields are:

              field          allowed values
              -----          --------------
              minute         0-59
              hour           0-23
              day of month   1-31
              month          1-12 (or names, see below)
              day of week    0-7 (0 or 7 is Sun, or use names)

       A field may be an asterisk (*), which always stands for ``first-last''.

       Ranges  of numbers are allowed.  Ranges are two numbers separated with a
hyphen.  The specified range
       is inclusive.  For example, 8-11 for an ``hours'' entry specifies

execution at hours 8, 9, 10 and 11.

Lists are allowed. A list is a set of numbers (or ranges) separated by commas. Examples:

``1,2,5,9'', ``0-4,8-12''.
:

Question: how does "0 */4 * * *" cause something to run every 4 weeks? Unless your version has a different field order. It might work to try "* */628 * * *" but I'm not sure that cron allows n>24 for the hourly divisor.

The combination of date and weekday can approximate the 4-week cycle.

--
Steven Lembark                              2930 W. Palmer
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                                           +1 800 762 1582
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Received on Tue Jul 02 2002 - 10:13:23 CDT