观察Oracle数据库性能，Oracle自带的awr 功能为我们提供了一个近乎完美的解决方案，通过awr特性我们可以随时从数据库提取awr报告。不过awrrpt.sql脚本执行时需要我们提供一些交互信息，因此可以将其整合到shell脚本中来实现自动产生指定时段的awr报告并发送给相关人员。本文即是描述linux shell脚本来实现此功能。

1、shell脚本

robin@SZDB:~/dba_scripts/custom/awr> more autoawr.sh
#!/bin/bash
# --------------------------------------------------------------------------+
#                  CHECK ALERT LOG FILE                                    |
#  Filename: autoawr.sh                                                    |
#  Desc:                                                                  |
#      The script use to generate AWR report and send mail automatic.      |
#      The sql script autoawr.sql call by this shell script.              |                         
#      Default, the whole day AWR report will be gathered.                | 
#      Deploy it to crontab at 23:30                                        |
#      If you want to change the snap interval,please change autoawr.sql  |
#          and crontab configuration                                        |
#  Usage:                                                                  |
#      ./autoawr.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='Robinson.cheng@12306.com'
export AWR_CMD=/users/robin/dba_scripts/custom/awr
export AWR_DIR=/users/robin/dba_scripts/custom/awr/report
export MAIL_FM='oracle@szdb.com'
RETENTION=31

# ----------------------------------------------
# check if 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_BODY=" $ORACLE_SID is not available on ${MACHINE} at `date` when try to generate AWR."
    $MAIL_DIR/sendEmail -u $MAIL_SUB -f $MAIL_FM -t $MAIL_LIST -m $MAIL_BODY
    exit 1
fi;

# ----------------------------------------------
# Generate awr report
# ----------------------------------------------
$ORACLE_HOME/bin/sqlplus /nolog/tmp/db_${ORACLE_SID}_stauts.log
    MAIL_SUB=" Occurred error while generate AWR for ${ORACLE_SID}  !!!"
    MAIL_BODY=" Some exceptions encountered during generate AWR report for $ORACLE_SID on `hostname`."
    $MAIL_DIR/sendEmail -u $MAIL_SUB -f $MAIL_FM -t $MAIL_LIST -m $MAIL_BODY
    exit
fi

# ------------------------------------------------
# Send email with AWR report
# ------------------------------------------------
dt=`date -d yesterday +%Y%m%d`
filename=`ls ${AWR_DIR}/${ORACLE_SID}_awrrpt_?_${dt}*`
if [ -e "${filename}" ];then
    MAIL_SUB="AWR report from ${ORACLE_SID} on `hostname`."
    MAIL_BODY="This is an AWR report from ${ORACLE_SID} on `hostname`."
    $MAIL_DIR/sendEmail -u $MAIL_SUB -f $MAIL_FM -t $MAIL_LIST -m $MAIL_BODY -a ${filename}
    echo ${filename}
fi

# ------------------------------------------------
# Removing files older than $RETENTION parameter
# ------------------------------------------------

find ${AWR_DIR} -name "*awrrpt*" -mtime +$RETENTION -exec rm {} ;
exit   

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