转 oraenv

代码如下：

"oraenv" 67 lines, 1381 characters 
#!/bin/sh
#
# Get the machine type and then set up ORATAB and TNS_ADMIN variables
#
MACH_TYPE=`uname -s`
case ${MACH_TYPE} in
        "SunOS" )       ORATAB=/var/opt/oracle/oratab
                        TNS_ADMIN=/var/opt/oracle
                        ORA_ORAENV=/opt/bin/ora_oraenv
                        ;;
        "HP-UX" )       ORATAB=/etc/oratab
                        TNS_ADMIN=/etc
                        ORA_ORAENV=/usr/local/bin/ora_oraenv
                        ;;
        * )             ORATAB=/etc/oratab
                        TNS_ADMIN=/etc
                        ORA_ORAENV=/usr/local/bin/ora_oraenv
                        ;;
esac

export TNS_ADMIN ORA_ORAENV
#
# Extract a list of Oracle SID's that are defined with the oratab file
#
SIDLIST=`awk -F: '/^[^#]/{printf "
   %s",$1}' ${ORATAB}`
case "${ORAENV_ASK:-''}" in
        NO )    ;;
        * )     clear
                echo "SIDs on this machine are; ${SIDLIST}
"
                ;;
esac
#
# This is the official oraenv file as supplied by Oracle
#
. ${ORA_ORAENV}

if [ -d ${ORACLE_HOME} ]; then
   ORACLE_BASE=`cd ${ORACLE_HOME}/../..; pwd`
else
   ORACLE_BASE=${HOME}
   echo
   echo "Warning - Oracle HOME not valid, Oracle BASE not set correctly"
fi
export ORACLE_BASE

LOCAL=${ORACLE_BASE}/local
DBA=${ORACLE_BASE}/admin
DB=${ORACLE_BASE}/admin/${ORACLE_SID}
ORACLE_PATH=${DB}/adhoc:${LOCAL}:.
export DBA DB LOCAL ORACLE_PATH

case ${PATH} in
        *${LOCAL}* )    ;;
        *: )            PATH=${PATH}${LOCAL}:
                        ;;
        * )             PATH=${PATH}:${LOCAL}:
                        ;;
esac
export PATH

echo "
Oracle SID  = ${ORACLE_SID}
Oracle BASE = ${ORACLE_BASE}
Oracle HOME = ${ORACLE_HOME}
SQL*Net TNS = ${TNS_ADMIN}
"

（1）在登录主机之后，习惯性的设置环境变量：

stty erase ^?
set -o vi
set ORAENV_ASK=YES
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stty erase ^?
set -o vi
set ORAENV_ASK=YES
注意ORAENV_ASK这个参数和oraenv配合使用。当设置ORAENV_ASK=YES时，运行oraenv会提示当前的数据库sid：

[oracle@standby1 ~]$ export ORAENV_ASK=NO
[oracle@standby1 ~]$ oraenv
[oracle@standby1 ~]$
[oracle@standby1 ~]$
[oracle@standby1 ~]$ export ORAENV_ASK=YES
[oracle@standby1 ~]$ oraenv
ORACLE_SID = [oradg] ?
[oracle@standby1 ~]$
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[oracle@standby1 ~]$ export ORAENV_ASK=NO
[oracle@standby1 ~]$ oraenv
[oracle@standby1 ~]$
[oracle@standby1 ~]$
[oracle@standby1 ~]$ export ORAENV_ASK=YES
[oracle@standby1 ~]$ oraenv
ORACLE_SID = [oradg] ?
[oracle@standby1 ~]$