Re: Oracle 9 install on machine with Oracle 8 already installed

Paul Smith wrote:

> I've read it's possible to have Oracle 8 installed on the same machine
> as Oracle 9. Unfortunately I can't find any Oracle documentation on
> this. The installation guide for version 9 does not go into such
> scenarios.
>
> The installation guide tells me that the oraInventory is a repository
> of all installed Oracle products. Does that mean that it should be
> updated with the details of the Oracle 9 installation I am about to
> do? Or will I end up with two oraInventory?
>
> I have Oracle 8 installed in /u01. Under that I have a folder
> /u01/oraInventory and one named /u01/OraHome8. Should I set
> ORACLE_BASE to /u01 and ORACLE_HOME to OraHome9 before starting the
> installation. Or should I install version 9 in a completely seperate
> area?
>
> I already have an 'oracle' user and an 'oinstall' [ORAINVENTORY] group
> for the Oracle 8 installation. I imagine that I can/should use these
> for the Oracle 9 installation?
>
> Thanks in advance for any help.
>
> Paul

Paul,

Effectively, it is possible to have two or more Oracle releases on the same machine. You can use the same account and the same group to install the two releases. It is not at all a problem.

The environment variable ORACLE_BASE should contain the root directory of the installed releases. In your case, it should be /u01. If I remember during the installation, the first thing to do is to choose an Oracle home. In the corresponding text fields, you must define another Oracle home, OraHome9 if you want and set the correct path, for example /u01/OraHome9.

For the installation itself, there is no problem. After that, to administrate correctly your Oracle instances, you should define some aliases to switch the environment from Oracle 8 to Oracle 9 for example.

I do that all the days and it works perfectly.

Hope it helps
Stéphane Received on Mon Jun 23 2003 - 14:40:18 CDT