Database Startup

>>Script Language and Platform: Oracle
This shell script is useful to startup a database when it must be running. It checks the database status based on value of status (Y|N) in the /etc/oratab file and send an e-mail to DBA when database has been restarted. It works fine in Red Hat Linux boxes.

Author: Lums Claudio Rodrigues da Silveira

#!/bin/sh
#
# Verifies status of the database and send a message to DBA
# in the case of database is running out.
# It works fine in Red Hat Linux boxes
# Date : 10/17/2003
# Author : Luis Claudio Rodrigues da Silveira

# Get oracle account
USER=`whoami`
# Get home to find oracle binaries
ORACLE_HOME=`grep ^$USER: /etc/passwd | cut -d: -f6`
DIRBIN=$ORACLE_HOME/bin
# put your e-mail here
ADDRESS=someone@somewhere.com
MESSAGE=message.log

export USER ORACLE_HOME DIRBIN ADDRESS MESSAGE

touch $MESSAGE

# retrieves the name of all oracle instances
for DB in `cat /etc/oratab | cut -f1 -d:`
do
OPEN=0

# verified if database is opened or closed
STATUS=`cat /etc/oratab | grep $DB | cut -f3 -d:`
for ACTIVE in `ps -ef | grep ora_pmon | grep -v grep | cut -f3 -d"_"`
do
if [ "$DB" = "$ACTIVE" ]
then
OPEN=1
fi
done

if [ $OPEN -eq 0 -a "$STATUS" = "Y" ]
then
echo "Instance $DB must be running : it has been restarted on
`hostname`" >> $MESSAGE
export ORACLE_SID=$DB
$ORACLE_HOME/bin/sqlplus /nolog << !
connect / as sysdba startup
exit
!
fi

done

# do not send a empty message..
LINES=`cat $MESSAGE | wc -l`
if [ $LINES -gt 0 ]
then
mailx -s "Script checkdb.sh" $ADDRESS << !
Data : `date`
`echo`
`cat $MESSAGE`
!
fi

touch $MESSAGE

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