Oracle数据库警报日志脚本错误

Question

我编写了警报日志脚本，并且在执行脚本时我怀疑sed部分无法正常工作，这有些不起作用，也没有引发任何错误。 你能告诉我我做错了什么吗？

这是一段代码

#!/bin/sh



## Heading #########################################################################################
#---------------------------------------------------------------------------------------#
# script usage                                                                          #
#---------------------------------------------------------------------------------------#

_usage() {
  echo "Usage: $0 ORACLE_SID "
} # _usage

    ORACLE_SID="$1"
    setenv ()
    {
        eval "$1=$2"
        export "$1"
    } # setenv

    unsetenv ()
    {
        while [ $# -gt 0 ]
        do
            unset "$1"
            shift
        done
    } # unsetenv

if [ $# -ne 1 ]; then
   _usage
   exit 1
fi

Env=/u01/app/oracle/config
HN=`uname -n`
ERROR_FILE=/tmp/${ORACLE_SID}_error.log
HN=`hostname`
DBA_MAIL="oracle.mail@company"
DBA_PAGE=""



#+--------------------------------------------------------------------------------------+
#|  get oracle environment variables from our common env dir                            |
#+--------------------------------------------------------------------------------------+

if [ -r $Env/${ORACLE_SID}.env ]
then
    . $Env/${ORACLE_SID}.env
else
    ORACLE_SID=""
fi

#+--------------------------------------------------------------------------------------+
#|  just checking for Oracle Env variables for connecting database                      |
#+--------------------------------------------------------------------------------------+

if [ "$ORACLE_SID" = "" ]
then
        echo "ORACLE_SID is invalid"
        exit 1
fi
if [ "$ORACLE_HOME" = "" ]
then
        echo "The environment variable ORACLE_HOME must be set"
        exit 1
fi
if [ "$ORACLE_BASE" = "" ]
then
        echo "The environment variable ORACLE_BASE must be set"
        exit 1
fi

_AlertLogLoc ()
{
ALERTLOG=`$ORACLE_HOME/bin/sqlplus -s "/as sysdba" << EOF
set head off pause off term on feed off timing off
select value from v\\$parameter where name like 'background_dump_dest';
exit;
EOF`
}
_AlertLogLoc
echo $ALERTLOG
export ALERTLOG


if [ -f $ALERTLOG/alert_${ORACLE_SID}.log ]; then
        echo "Found Database Alert log"
else
        echo "Alert log not found .. exit from  script"
fi

if [ -f $ALERTLOG/alert_${ORACLE_SID}.skip ]; then
        echo " ORACLE_SID skip error file found"
        SKIP_ERR=`cat $ALERTLOG/alert_$ORACLE_SID.skip|xargs|sed -e 's/ /|/g'`
        echo $SKIP_ERR
else
        echo "No errors will be excluded"
fi
REC_CUR_ALSIZE=/oraworkspace/OSE/logs/alert_${ORACLE_SID}.size  # file to record current alert log lines
#---------------------------------------------------------------------------------------------------------#
# let Capture ORA- error from the alert log                                                               #
#---------------------------------------------------------------------------------------------------------#

if [ -f $REC_CUR_ALSIZE ]; then
        ALSIZE=`cat $REC_CUR_ALSIZE|sed -e 's/^[ \t]*//'`
                ALSIZE=`expr $ALSIZE + 1`
else
ALSIZE=0
fi


if [ $ALSIZE -eq 0 ]; then
        echo "PROBABLY RUNNUNG THE SCRIPT FIRST TIME"
        sed -n  $ALSIZE',$p' $ALERTLOG/alert_${ORACLE_SID}.log |egrep -v "$SKIP_ERR"|grep -i 'ORA-' > /tmp/${ORACLE_SID}_error.log
        #`wc -l $ALERTLOG/alert_${ORACLE_SID}.log > $REC_CUR_ALSIZE
        cat $ALERTLOG/alert_${ORACLE_SID}.log|wc -l > /oraworkspace/OSE/logs/alert_${ORACLE_SID}.size
        #ALSIZE=`cat $ALERTLOG/alert_${ORACLE_SID}.log |wc -l`
else
        sed -n  ${ALSIZE}',$p'  $ALERTLOG/alert_${ORACLE_SID}.log |egrep -v "$SKIP_ERR"|grep -i 'ORA-' > /tmp/${ORACLE_SID}_error.log
        #wc -l $ALERTLOG/alert_${ORACLE_SID}.log >> $REC_CUR_ALSIZE
        cat $ALERTLOG/alert_${ORACLE_SID}.log |wc -l > /oraworkspace/OSE/logs/alert_${ORACLE_SID}.size
fi



#---------------------------------------------------------------------------------------------------------#
# Notify if any errors are found                                                                          #
#---------------------------------------------------------------------------------------------------------#

ERR_CNT=`cat /tmp/${ORACLE_SID}_error.log |wc -l`

if [ $ERR_CNT -ne 0 ]; then
        echo "Errors found in the alert log. send email notification"
        mailx -s "${HN}:${ORACLE_SID} ORA error Found in the alert log" ${DBA_MAIL} < $ERROR_FILE
        #mailx -s "${HN}:${ORACLE_SID} ORA error Found in the alert log" ${DBA_MAIL}  < $ERROR_FILE
else
        echo " No errors found in the alert log"
fi

Answer 1

如果$ALERTLOG/alert_$ORACLE_SID.skip不存在或为空（第94行左右），则egrep -v "$SKIP_ERR"将从sed输出中排除所有行，因此将没有机会看到剩余的任何行ORA-错误。

ALSIZE=1
SKIP_ERR=""
sed -n  $ALSIZE',$p' $ALERTLOG/alert_${ORACLE_SID}.log |\
  egrep -v "$SKIP_ERR"|wc -l

0

SKIP_ERR="dummy"
sed -n  $ALSIZE',$p' $ALERTLOG/alert_${ORACLE_SID}.log |\
  egrep -v "$SKIP_ERR"|wc -l

15165

因此，您需要将SKIP_ERR设置为未设置或为空的内容（如果您的跳过文件为空）。 您没有说是这种情况，也没有显示脚本输出，但是似乎可以分开工作。

同样不是说如果ALSIZE为零， sed至少在RHEL 5中是不满意的：

ALSIZE=0
SKIP_ERR="dummy"
sed -n  $ALSIZE',$p' $ALERTLOG/alert_${ORACLE_SID}.log |\
  egrep -v "$SKIP_ERR"|wc -l

sed: -e expression #1, char 4: invalid usage of line address 0
0

当您在第91行测试文件是否存在时，会显示一条消息，提示您将在此处停止，但在第94行之后没有exit ； 在这里似乎无关紧要，但似乎是一个疏忽？