File oraenv of Package oracle-config

#!/bin/sh
#
# $Header: oraenv.sh.pp 16-jun-2005.10:46:09 mlfallon Exp $ oraenv.sh.pp Copyr (c) 1991 Oracle
#
###################################
#
# usage: . oraenv
#
# This routine is used to condition a user's environment for access to
# an ORACLE database. It will prompt for the value of the new SID unless
# the variable ORAENV_ASK is set to NO, in which case it will use the
# current value of ORACLE_SID.
# The character "*" denotes a null SID.
#
# NOTE:		Due to constraints of the shell in regard to environment
# -----		variables, the command MUST be prefaced with ".". If it
#		is not, then no permanent change in the user's environment
#		can take place.
#
#####################################

case ${ORACLE_TRACE:-""} in

T)  set -x ;;
esac

#
# Determine how to suppress newline with echo command.
#
N=
C=
if echo "\c" | grep c >/dev/null 2>&1; then
    N='-n'
else
    C='\c'
fi

#
# Set minimum environment variables
#

# ensure that OLDHOME is non-null
if [ ${ORACLE_HOME:-0} = 0 ]; then
    OLDHOME=$PATH
else
    OLDHOME=$ORACLE_HOME
fi
case ${ORAENV_ASK:-""} in                       #ORAENV_ASK suppresses prompt when set

NO)	NEWSID="$ORACLE_SID" ;;
    *)	case "$ORACLE_SID" in
	    "")	ORASID=$LOGNAME ;;
	    *)	ORASID=$ORACLE_SID ;;
	esac
	echo $N "ORACLE_SID = [$ORASID] ? $C"
	read NEWSID
	case "$NEWSID" in
	    "")		ORACLE_SID="$ORASID" ;;
	    *)	        ORACLE_SID="$NEWSID" ;;
	esac ;;
esac
export ORACLE_SID

ORAHOME=`dbhome "$ORACLE_SID"`
case $? in
    0)	ORACLE_HOME=$ORAHOME ;;
    *)	echo $N "ORACLE_HOME = [$ORAHOME] ? $C"
	read NEWHOME
	case "$NEWHOME" in
	    "")	ORACLE_HOME=$ORAHOME ;;
	    *)	ORACLE_HOME=$NEWHOME ;;
	esac ;;
esac

export ORACLE_HOME

#
# Reset LD_LIBRARY_PATH
#
case "$LD_LIBRARY_PATH" in
    *$OLDHOME/lib*)     LD_LIBRARY_PATH=`echo $LD_LIBRARY_PATH | \
                            sed "s;$OLDHOME/lib;$ORACLE_HOME/lib;g"` ;;
    *$ORACLE_HOME/lib*) ;;
    "")                 LD_LIBRARY_PATH=$ORACLE_HOME/lib ;;
    *)                  LD_LIBRARY_PATH=$ORACLE_HOME/lib:$LD_LIBRARY_PATH ;;
esac

export LD_LIBRARY_PATH

#
# Put new ORACLE_HOME in path and remove old one
#

case "$OLDHOME" in
    "")	OLDHOME=$PATH ;;	#This makes it so that null OLDHOME can't match
esac				#anything in next case statement

case "$PATH" in
    *$OLDHOME/bin*)	PATH=`echo $PATH | \
			    sed "s;$OLDHOME/bin;$ORACLE_HOME/bin;g"` ;;
    *$ORACLE_HOME/bin*)	;;
    *:)			PATH=${PATH}$ORACLE_HOME/bin: ;;
    "")			PATH=$ORACLE_HOME/bin ;;
    *)			PATH=$PATH:$ORACLE_HOME/bin ;;
esac

export PATH

#
# Install any "custom" code here
#

# Locate "osh" and exec it if found
ULIMIT=`LANG=C ulimit 2>/dev/null`

if [ $? = 0 -a "$ULIMIT" != "unlimited" ] ; then
  if [ "$ULIMIT" -lt 2113674 ] ; then

if [ -f $ORACLE_HOME/bin/osh ] ; then
	exec $ORACLE_HOME/bin/osh
    else
	for D in `echo $PATH | tr : " "`
	do
	    if [ -f $D/osh ] ; then
		exec $D/osh
	    fi
	done
    fi