How to set up the Oracle environment...?

I have a new copy of Oracle Enterprise Linux with Oracle 11 g R1 installed.

Steps that I made and I am trying to understand...

1. start the server OEL.
2 to login remotely using PUTTY, I connect to the OEL
3. I'm setting the variables (ORACLE_HOME and ORACLE_SID) with the "export".
4. connect to sqlplus under sys with sysdba
5A started the database. Everything is fine!
6. If I log out of PUTTY and log back all my step 3 variables have disappeared.
7. you know by now, I can't start the Oracle database without error.

My question is...

How to make the proper environment for the Oracle database?
Do I have to have the above two variable filled all the time. Should these two variables be part of any (for root) login script? Once the session (shell) must be running all the time?
Missing link here. I'm learning.
Thank you
Smith

For starters, there are several environments shell could be defined as a default, such as: sh, csh, ksh, bash, tcsh, zsh or rc.
Depending on what shell environment you have defined, you can or will have a different startup file when you connect.

But the fundamentals still apply:

For the most part, the first thing is that you should not run anything as root (related to Oracle).
Oracle must have his own user name and be part of the DBA group.
Maybe you have entered.

Then Yes, your environment variables to be reset when you reconnect.
There are several ways to achieve this.

One of the most popular ways (although I do not necessarily), is to set the environment variables in your connection startup script.
for example, your .profile file (dot - profile). For ksh shell, for example, it runs at first upward when you connect, once your session has read the script/etc/profile to wide control panel.

If the environment variables are set correctly, they are exported, which is source as your login script runs.

(Which I prefer), is in turn, you can 'source' environment variables yourself.
It is again differently according to your default shell.
For ksh, just type. . (I.e.: point-space-scriptfile)
It is important that you include a space between the point and the file to run.
This will make your additional windows in your main window and see these settings approx.

Another option, favoured by Oracle, is to set the Oracle $PATH in your login script (.profile or other) and then run. oraenv. (point-space-oraenv). Supply the parameters that are defined when you run the oraenv that defines things like your ORACLE_SID and ORACLE_HOME.

HTH...

Tags: Database

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