Linux/Unix shell 參數傳遞到SQL指令碼

在資料庫營運的過程中，Shell 指令碼在很大程度上為營運提供了極大的便利性。而shell 指令碼參數作為變數傳遞給SQL以及SQL指令碼也是DBA經常碰到的情形之一。本文主要討論了如何將shell指令碼的參數傳遞到SQL指令碼之中並執行SQL查詢。

1、啟動sqlplus時執行指令碼並傳遞參數

robin@SZDB:~/dba_scripts/custom/awr> more tmp.sh

#!/bin/bash

# ----------------------------------------------

#  Set environment here

#  Author : Robinson Cheng

# ----------------------------------------------

if [ -f ~/.bash_profile ]; then

. ~/.bash_profile

fi

if [ -z "${1}" ] || [ -z "${2}" ] || [ -z "${3}" ] ;then

echo "Usage: "

echo "      `basename $0` <ORACLE_SID> <begin_dat> <end_date>"

read -p "please input begin ORACLE_SID:" ORACLE_SID

read -p "please input begin date and time(e.g. yyyymmddhh24):" begin_date

read -p "please input end date and time(e.g. yyyymmddhh24):" end_date

else

ORACLE_SID=${1}

begin_date=${2}

end_date=${3}

fi

export ORACLE_SID begin_date end_date

#Method 1: pass the parameter to script directly after script name

sqlplus -S gx_adm/gx_adm @/users/robin/dba_scripts/custom/awr/tmp.sql $begin_date $end_date

exit

robin@SZDB:~/dba_scripts/custom/awr> more tmp.sql

SELECT snap_id, dbid, snap_level

 FROM dba_hist_snapshot

WHERE TO_CHAR (begin_interval_time, 'yyyymmddhh24') = '&1'

AND TO_CHAR (end_interval_time, 'yyyymmddhh24') = '&2';

exit;