Question

I ran the below script to set environment variables for oracle(oracle_env.sh which comes with oracle package itself).

ORACLE_HOME=/usr/lib/oracle/xe/app/oracle/product/10.2.0/server
export ORACLE_HOME
ORACLE_SID=XE
export ORACLE_SID
NLS_LANG=`$ORACLE_HOME/bin/nls_lang.sh`
export NLS_LANG
PATH=$ORACLE_HOME/bin:$PATH
export PATH
if [ $?LD_LIBRARY_PATH ]
then
        LD_LIBRARY_PATH=$ORACLE_HOME/lib:$LD_LIBRARY_PATH
else
        LD_LIBRARY_PATH=$ORACLE_HOME/lib
fi
export LD_LIBRARY_PATH

After that when I ran env to ensure that the variables are exported properly, I found no properties are exported(below is the output).

invincible:/home/invincible# /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin/oracle_env.sh
invincible:/home/invincible# env | grep ORACLE_HOME
invincible:/home/invincible# 

Now I am not sure whether variables are exported properly.If not what I have done wrong? Please help me out.
And one more thing, I am running as root.

Answer 1

The scripts only sets the environment inside the subshell it runs in. You should source it:

# POSIX
. /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin/oracle_env.sh

or

# bash/ksh
source /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin/oracle_env.sh