Postgresql and uPortal

Greetings,

We are beginning to implement uPortal on Postgresql 7.4.8 on a z/Linux
server. We are interested in obtaining information pertaining to any
modification of the configuration parameters as distributed with the
DBMS. Can anyone provide details on changes made such as:
- adjustments in physical space allocation
- adjustments in virtual space allocation - shared buffers, cache sizes
etc.
- changes in database management parms
- changes in other system parms
- any modification to any of the tables such as adding indexes
- use connection pooling or not
- logging or not
- performance and tuning tips
- how frequently do you vacuum the database or do you use the auto
feature
- are there any locking issues and what are your settings.

Any information would be greatly appreciated. Any insights into your
best practices would also be appreciated.

Thanks, Bob Given

Boston University
bgiven(at)bu(dot)edu