Linux/Unix shell 参数传递到SQL脚本

　　3、通过定义变量的方式来传递参数

robin@SZDB:~/dba_scripts/custom/awr> more tmp3.sh
#!/bin/bash

# ----------------------------------------------
#  Set environment here
#  Author : Robinson Cheng
#  Blog   : http://blog.csdn.net/robinson_0612
# ----------------------------------------------

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 3: pass the parameter to global variable firstly.
sqlplus -S " / as sysdba" <<EOF
define begin_date=$begin_date      
define end_date=$end_date
prompt "variable value for begin_date is: &begin_date"
prompt "variable value for end_date id : &end_date"
@/users/robin/dba_scripts/custom/awr/tmp3.sql begin_date end_date
exit;
EOF
exit

robin@SZDB:~/dba_scripts/custom/awr> more tmp3.sql
SELECT snap_id， dbid， snap_level
  FROM dba_hist_snapshot
 WHERE TO_CHAR (begin_interval_time， 'yyyymmddhh24') = '&begin_date'
       AND TO_CHAR (end_interval_time， 'yyyymmddhh24') = '&end_date';
exit;

　　4、测试脚本

robin@SZDB:~/dba_scripts/custom/awr> ./tmp.sh
Usage:
      tmp.sh <ORACLE_SID> <begin_dat> <end_date>
please input begin ORACLE_SID:CNMMBO
please input begin date and time(e.g. yyyymmddhh24):2013030709
please input end date and time(e.g. yyyymmddhh24):2013030710

   SNAP_ID       DBID SNAP_LEVEL
---------- ---------- ----------
     13877  938506715          1

robin@SZDB:~/dba_scripts/custom/awr> ./tmp2.sh MMBOTST 2013030709 2013030710

   SNAP_ID       DBID SNAP_LEVEL
---------- ---------- ----------
     36262 3509254984          1

robin@SZDB:~/dba_scripts/custom/awr> ./tmp3.sh MMBOTST 2013030710 2013030711
"variable value for begin_date is: 2013030710"
"variable value for end_date id : 2013030711"

   SNAP_ID       DBID SNAP_LEVEL
---------- ---------- ----------
     36263 3509254984          1

　　5、小结

　　a、本文主要描述了将shell的参数传递给SQL脚本

　　b、方式1的用法是直接将shell变量跟在脚本之后，sqlplus userid/pwd @script_name $para1 $para2

　　c、方式2是启动sqlplus后在SQL提示符下来传递参数，SQL>@script_name $para1 $para2

　　d、方式3则是将shell变量的值先传递给define定义的变量，然后再传递给SQL脚本 SQL>@script_name var1 var2

　　e、注意方式3中SQL脚本的替代变量与define定义的变量名相同