Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: recurring run of sh script in crontab
Top Forums Shell Programming and Scripting recurring run of sh script in crontab Post 302116708 by MarGur on Monday 7th of May 2007 06:35:29 PM
Old 05-07-2007
Question recurring run of sh script in crontab
Hello gurus.

I have a problem: my crontab -e is looks like this:

ORACLE_SID=bla-bla
* 21 * * * (sqlplus hotback/hotback @/oracle/backups/bla-bla/scripts/hotback/daily_hotback.sql)
0 19 * * * /oracle/backups/dev10g/scripts/exports/daily_exports.sh
0 1 * * * /oracle/backups/dev10g/scripts/exports/export_compress.sh

All was great untill May 4, when this script began to run every minute during the hour (21:00). Here is a log from /var/log/cron:


May 4 21:00:01 localhost crond[7267]: (oracle) CMD ((sqlplus hotback/hotback @/oracle/backups/bla-bla/scripts/hotback/daily_hotback.sql))
May 4 21:01:01 localhost crond[7278]: (oracle) CMD ((sqlplus hotback/hotback @/oracle/backups/bla-bla/scripts/hotback/daily_hotback.sql))
May 4 21:01:01 localhost crond[7280]: (root) CMD (run-parts /etc/cron.hourly)
May 4 21:02:01 localhost crond[7284]: (oracle) CMD ((sqlplus hotback/hotback @/oracle/backups/bla-bla/scripts/hotback/daily_hotback.sql))
May 4 21:03:01 localhost crond[7291]: (oracle) CMD ((sqlplus hotback/hotback @/oracle/backups/bla-bla/scripts/hotback/daily_hotback.sql))


and so on, all the way during the 9PM and at 22:00 it stops.
I'm a newbie in Unix and really don't understand, why this happens.

BTW, we have 4 boxes with the same job in cron, all of them look like:
0 21 * * * (sqlplus hotback/hotback @/bla-bla/hotback/daily_hotback.sql) (I mean, the first is "0" instead of * (asterics). Could it be the reason?)

As you may be see, this script makes hot backups from datafiles on DBs, and due to this recurring scripts, we have 60 processes, that try to make bakup. At the end, a system hungs, and hotbackups are not finished.

If you have any ideas, please, help me! I would really appreciate that!
Thank you forehand,
M.
 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Fail to run init-script from crontab

I have written a "simple" shell-script (BASH) to monitor the logs of our Resin-applicationserver. Whenever Resin runs out of available heap-space, the script then tries to restart the Resin-server. My problem is that my "autopilot"-script fails when it's run from crontab. Here's what the... (5 Replies)
Discussion started by: indo1144
5 Replies

2. Shell Programming and Scripting

How do i run a shell script without crontab.

Hi Folks, Could you please suggest me how to run a shell script on a solaris env without using crontab. I am actually trying to write a shell script which will grep "WORD" in the logfile andd sends a email.Thanks in advance. Thanks Sandeep. (3 Replies)
Discussion started by: sandeep anand
3 Replies

3. Shell Programming and Scripting

run script 1 minute interval without CronTab

I am using Solaris 9. I wish to run my script every 1 minute inteval. Though i can run it using below entry in crontab. * * * * /export/home/username/script/file_exist_&_run.sh in short above script will check whether a specific file exist in a directory. If it found it will inovke another... (10 Replies)
Discussion started by: thepurple
10 Replies

4. Shell Programming and Scripting

Script not running properly when run from Crontab

Hi I am a novice Linux/Perl user and am struggling to overcome what I am sure is a simple problem. I am using a perl program to create a shell script daily containing between 10 and 30 "at -f" commands for the same day. Then I change the file attributes to allow the file to be executed. When... (2 Replies)
Discussion started by: simoncjones
2 Replies

5. Shell Programming and Scripting

crontab fails to run script

OS is Ubuntu 8.04.3. When I run the command: /usr/bin/syslogMailer < /etc/syslog.pipes/criticalMessagesFrom a bash shell it works and i receive an email as per the script however when run from crontab it does not work. Can anyone explain why and how to fix it? /usr/bin/syslogMailer... (4 Replies)
Discussion started by: jelloir
4 Replies

6. Solaris

crontab entry to run a script on 1st of every month.

What should be the crontab entry in solaris to run a script on 1st of every month? Is this correct? 00 02 1 * * <script to be executed> (5 Replies)
Discussion started by: deepaksahni0109
5 Replies

7. Shell Programming and Scripting

run script through crontab using ksh

hi i have a script called test.sh. the content is ls >> crontest.txt. if i run manually it's giving output.but if i scheduled in crontab it's not giving output. crontab entry: 02 * * * * /sms5/SMSHOME/eds_sh/test.sh >> /sms5/SMSHOME/eds_sh/testfile/logfile 2>&1 I am using ksh.is there... (2 Replies)
Discussion started by: muraliinfy04
2 Replies

8. Shell Programming and Scripting

Cannot get this bash/expect script to run under a crontab

#!/bin/bash # # RAP configuration script # # Usage: ./rap.sh # # Requires: expect, tcl # # Script expects to find a file called rap.csv located in the same directory as the script. If the file is placed # in a different directory, modify the custom entries section to specify the absolute... (8 Replies)
Discussion started by: mrkool
8 Replies

9. Shell Programming and Scripting

Script fails to run properly when run from CRONTAB

Hello all, I'm trying to write a script to gather and send data and it works just fine at the bash command line, but when executing from CRON, it does not run properly. My scripting skills are pretty limited and there's probably a better way, but as I said it works at the command line, but... (12 Replies)
Discussion started by: rusman
12 Replies

10. Shell Programming and Scripting

Script containing Curl doesn't run with crontab

Hello I have a problem with the crontab command when I run a code containing Curl on the command line it runs without fail but as soon as I program it with crontab it executes everything except the curl returns fail thank you for helping me to resolve this problem because since Monday I look... (14 Replies)
Discussion started by: beautymind
14 Replies

LEARN ABOUT REDHAT

crond

CRON(8) 						      System Manager's Manual							   CRON(8)

NAME

       cron - daemon to execute scheduled commands (Vixie Cron)

SYNOPSIS

       cron

DESCRIPTION

       Cron should be started from /etc/rc or /etc/rc.local.  It will return immediately, so you don't need to start it with '&'.

       Cron searches /var/spool/cron for crontab files which are named after accounts in /etc/passwd; crontabs found are loaded into memory.  Cron
       also searches for /etc/crontab and the files in the /etc/cron.d/ directory, which are in a different format (see  crontab(5)).	Cron  then
       wakes up every minute, examining all stored crontabs, checking each command to see if it should be run in the current minute.  When execut-
       ing commands, any output is mailed to the owner of the crontab (or to the user named in the MAILTO environment variable in the crontab,	if
       such exists).

       Additionally,  cron checks each minute to see if its spool directory's modtime (or the modtime on /etc/crontab) has changed, and if it has,
       cron will then examine the modtime on all crontabs and reload those which have changed.	Thus cron need not be restarted whenever a crontab
       file is modified.  Note that the Crontab(1) command updates the modtime of the spool directory whenever it changes a crontab.

SEE ALSO

       crontab(1), crontab(5)

AUTHOR

       Paul Vixie <paul@vix.com>

4th Berkeley Distribution					 20 December 1993							   CRON(8)
All times are GMT -4. The time now is 05:13 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy