oraenv的设置

ORAENV便于设置oracle环境

存储路径：$ORACLE_HOME/bin

ORAENV_ASK：设置是否需要交互

交互式：

$ . oraenv
ORACLE_SID = [] ? orcl

非交互式
$ export ORACLE_SID=orcl
$ export ORAENV_ASK=NO
$ . oraenv

代码，网上找的：

#!/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 "\n   %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}
"