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Installing Oracle 10g release 1 and 2 on same machine

Can I install both Oracle 10g release 2 and 10g release 1 on the same machine? What about Oracle 10g and Oracle 9i?

Can I install both Oracle 10g release 2 and 10g release 1 on the same machine? Can I install both Oracle 10g and Oracle 9i on the same machine?
Yes, you can install different releases of Oracle database software on the same server. As a matter of fact, this is very common practice in the database world. Each release of the software will be installed in a different location (called an Oracle home) so you can have multiple databases (depending on system resources) running on the same server, each at a different release of Oracle.

As an example, section 1.6.2 in the Oracle Database 10g Release 2 (10.2) Installation Guide for Linux x86-64 clearly states that more than one Oracle home is supported. This is true for the Windows operating system, as well.

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