Linux/Unix shell 监控Oracle告警日志(monitor alter log file)

使用shell脚本实现对Oracle数据库的监控与管理将大大简化DBA的工作负担，如常见的对实例的监控，监听的监控，告警日志的监控，以及数据库的备份，AWR report的自动邮件等。本文给出Linux 下使用 shell 脚本来监控 Oracle 告警日志(monitor alter log file)。

Linux Shell的相关参考：

1、监控Oracle告警日志脚本

robin@SZDB:~/dba_scripts/custom/bin> more ck_alert.sh
#!/bin/bash
# --------------------------------------------------------------------------+
#                  CHECK ALERT LOG FILE                                    |
#  Filename: ck_alert.sh                                                  |
#  Desc:                                                                  |
#      The script use to check alert log file.                            |
#      Once any error was caught, a mail alert will be sent.              | 
#      Deploy it by crontab. e.g. per 15 min                              | 
#  Usage:                                                                  |
#      ./ck_alert.sh $ORACLE_SID                                          | 
#                                                                          |
#  Author : Robinson                                                      |
#  Blog  : http://blog.csdn.net/robinson 0612                            |
# --------------------------------------------------------------------------+
#
# --------------------------
#  Check SID
# --------------------------

if [ -z "${1}" ];then
    echo "Usage: "
    echo "      `basename $0` ORACLE_SID"
    exit 1
fi

# -------------------------------
#  Set environment here
# ------------------------------

if [ -f ~/.bash_profile ]; then
    . ~/.bash_profile
fi

export ORACLE_SID=$1
export MACHINE=`hostname`
export MAIL_DIR=/users/robin/dba_scripts/sendEmail-v1.56
export MAIL_LIST='[email protected]'
export MAIL_FM='[email protected]'

# ----------------------------------------------
# check the database is running, if not exit
# ----------------------------------------------

db_stat=`ps -ef | grep pmon_$ORACLE_SID | grep -v grep| cut -f3 -d_`
if [ -z "$db_stat" ]; then
    date >/tmp/db_${ORACLE_SID}_stauts.log
    echo " $ORACLE_SID is not available on ${MACHINE} !!!" >>/tmp/db_${ORACLE_SID}_stauts.log
    MAIL_SUB=" $ORACLE_SID is not available on ${MACHINE} !!!"
    $MAIL_DIR/sendEmail -u $MAIL_SUB -f $MAIL_FM -t $MAIL_LIST -o message-file=/tmp/db_${ORACLE_SID}_stauts.log
    exit 1
fi;

# --------------------------------------
#  Get the location of alert log file
# --------------------------------------

sqlplus '/ as sysdba' << EOF > /tmp/${ORACLE_SID}_monitor_temp.txt
column xxxx format a10
column value format a80
set lines 132
SELECT 'xxxx' ,value FROM  v\$parameter WHERE  name = 'background_dump_dest'
/
exit
EOF

cat /tmp/${ORACLE_SID}_monitor_temp.txt | awk '$1 ~ /xxxx/ {print $2}' > /tmp/${ORACLE_SID}_monitor_location.txt
read ALERT_DIR < /tmp/${ORACLE_SID}_monitor_location.txt
rm /tmp/${ORACLE_SID}_monitor_temp.txt 2>/dev/null

# ----------------------------------------
#  Define archive directory and log file
# ----------------------------------------

DT=`date +%Y%m%d`
DT_DIR=`date +%Y%m`
ARCH_DIR=${ALERT_DIR}/${DT_DIR}

if [ ! -d "${ARCH_DIR}" ] ; then
    mkdir $ARCH_DIR
fi

ORIG_ALERT_LOG=${ALERT_DIR}/alert_${ORACLE_SID}.log
NEW_ALERT_LOG=${ARCH_DIR}/alert_${ORACLE_SID}.log.${DT}
TEMP_ALERT_LOG=${ORIG_ALERT_LOG}.temp
AWK_DIR=/users/robin/dba_scripts/custom/bin

# -------------------------------------
#  Check alert log file and send email
# -------------------------------------
cat ${ORIG_ALERT_LOG} | awk -f $AWK_DIR/check_alert.awk > /tmp/${ORACLE_SID}_check_monitor_log.log
if [ -s "/tmp/${ORACLE_SID}_check_monitor_log.log" ];
  then
    echo "Found errors in sid ${ORACLE_SID}, mailed errors"
    echo -e "The following errors were found in the alert log for ${ORACLE_SID} \n" > /tmp/${ORACLE_SID}_check_monitor_log.mail
    echo -e "Alert log was copied into ${NEW_ALERT_LOG} \n">> /tmp/${ORACLE_SID}_check_monitor_log.mail
    date >> /tmp/${ORACLE_SID}_check_monitor_log.mail
    echo "--------------------------------------------------------------">>/tmp/${ORACLE_SID}_check_monitor_log.mail
    echo " "
    echo " " >> /tmp/${ORACLE_SID}_check_monitor_log.mail
    echo " " >> /tmp/${ORACLE_SID}_check_monitor_log.mail
    cat /tmp/${ORACLE_SID}_check_monitor_log.log >>  /tmp/${ORACLE_SID}_check_monitor_log.mail
    MAIL_SUB="Found errors in ${ORACLE_SID} on ${MACHINE}"
    $MAIL_DIR/sendEmail -u $MAIL_SUB -f $MAIL_FM -t $MAIL_LIST -o message-file=/tmp/${ORACLE_SID}_check_monitor_log.mail

# --------------------------------
#  Backup current alert log file
# --------------------------------
    mv ${ORIG_ALERT_LOG} ${TEMP_ALERT_LOG}
    cat ${TEMP_ALERT_LOG} >> ${NEW_ALERT_LOG}
    #touch ${ORIG_ALERT_LOG}
    cat /dev/null > ${ORIG_ALERT_LOG}
      rm /tmp/${ORACLE_SID}_check_monitor_log.log
      rm /tmp/${ORACLE_SID}_check_monitor_log.mail
      rm ${TEMP_ALERT_LOG} > /dev/null
    exit
fi

rm /tmp/${ORACLE_SID}_check_monitor_log.log > /dev/null
rm /tmp/${ORACLE_SID}_monitor_location.txt > /dev/null

exit