I'm having this scenario which for the moment I cannot resolve.
I wrote a script to make a dump/export of the oracle database. and then put this entry on crontab to be executed daily for example.
The script is like below:
Code:
cat /home/oracle/scripts/db_backup.sh
#!/bin/ksh
#Backup export database script
#Created 05-04-2011
# * * *
DATE=`date +%d%m%Y-%H%M%S`
ARCHIVE_DIR=/home/oracle/arch
SCRIPTS_DIR=/home/oracle/scripts
USER=oracle
PASS=XXXXXXXX
(
echo "Starting database dump ..."
date
cd $ARCHIVE_DIR
exp $USER/$PASS FILE=filename_$DATE.dmp log=logfile_$DATE.log
echo "End of database dump ..."
date
) | tee $ARCHIVE_DIR/exp_logfile-$DATE.log 2>&1
The crontab entry and also the script is executed as oracle user. When I execute directly from the shell the script is executed correctly and the dump is also generated ok.
But on the cron job I get only the log part "Starting/Stoping database dump ..." and not the export dump file and dump_log file: the "exp..." part.
Hi there,
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Discussion started by: itskov
5 Replies
LEARN ABOUT REDHAT
cron
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)
04-14-2011
