Hi,

I would like to know the pros and cons of using connection pooling at
various levels with respect to performance.

- JDBC2.0 Driver's built-in pooling
- Servlet Engine's built-in mechanism (JRun 3.1 for example)
- Application Level (own code)

In my opinion, pooling implemented in the driver can take advantage of the
underlying platform & the DB server protocols and thus can contribute to
performance significantly; whereas the same implemented at web server or
application level do not significantly make any difference when compared to
each other.

It would be nice if someone can throw more light and provide some
material/references for a comprehensive comparison.

Thanks in advance,
Suresh

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