Oracle Environment Variables on Linux

Hi,
First, I'll admit that I'm very, very new to Linux. I'm running Oracle Database XE 11g R2 on a virtual machine (Virtualbox) that is running Oracle Enterprise Linux 6. Whenever I open a terminal window and set ORACLE_HOME, PATH, and ORACLE_SID, I can easily access SQLPlus, simply by typing "SQLPlus". However, if I close that window and then open another terminal window, I cannot access SQLPlus, simply by typing "SQLPlus". I have to re-specify the environment variables first.
I'm sure that this is something simple but my lack of Linux experience is keeping me from finding the issue. Also, I've not found any documentation that helps but please point me to it if I've missed it.
Thanks,
Brian

You can also set your environment by using a shell script that comes with the XE default installation:
# source /u01/app/oracle/product/11.2.0/xe/bin/oracle_env.sh
There's also a backup script.
# /u01/app/oracle/product/11.2.0/xe/config/scripts/backup.sh
assuming that you've installed the XE instance in the default path /u01
C.

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Oracle Environment Variables on Linux

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