if [ $# -ne 2 ]
then echo "Usage: $0 DB MAX_ALLOWED "
exit
fi
DB=$1
MAX_ALLOWED=$2
MAIL_LIST=bob
CNT=`${ORACLE_HOME}/bin/sqlplus -s \/nolog << EOF | tail +1 2>/dev/
null
set pages 0
set head off
set feedback off
set termout off
set verify off
set echo off
connect system/${SYS_PWD}@${DB}
select count(*) from greg.counter;
EOF`
# echo $CNT
if [ $CNT -gt $MAX_ALLOWED ]
then mailx -s "too many ( ${CNT} ) in $1 !! " $MAIL_LIST < /dev/null
else
echo "All is well !! "
fi
Here are two links that should be of interest. The first calculates
the seconds between to counters and the second has the C program
source for a time difference calculator.
http://www.askdavetaylor.com/date_math_in_linux_shell_script.html
http://www.unixtutorial.org/2008/06/unix-scripting-time-and-date/
HTH -- Mark D Powell --