Postgres 8.0 upgrade to 9.0

Hi Forum,

We are planning to upgrade a postgres 8.0 database to postgres 9.0 (Actually already done in Dev). The application is J2EE application with Hibernate. My question are

1) Is there a list of things that needs to be taken care while upgrading(known issues).

2) Do I need to upgrade JDBC driver when I upgrade to postgres9.0.

3) If we upgrade JDBC driver will we require to upgrade hibernate dialect?

4) Any other suggestions.

Regards,
Atul Goel

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