Can we have 2 databases on same server

Hi Team,

I have Solaris 9 machine with Pgsql 7.4 and want to upgrade to 8.2.5. I
don't want to disturb the first version now. I want to install second
one separately and need to test with my application. If it works fine, I
will activate only the latest one and other version 7.4 will be
discarded. This is my idea.

1) Can I please know, if we can run 2 databases on the same server
with out any conflicts?

2) If it is so, at what stage we are need to configure the 2
databases? Pls provide links or docs if available.

3) If we had a front end application and have the options like
switching the database, the 2 databases are compulsory, right?(Thinking
only one server is available.)

Can you pls advice on this.

Regards,

G. V. Suresh Gupta

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