Can anyone comment offhand on how well a 7.4-vintage JDBC driver
(build 215 to be exact) would interoperate with a PG 8.1 server?
I need to make some recommendations about RHEL update procedures
and this question came up.

I have some recollection that JDBC looks into the system catalogs
to an extent that makes old drivers likely to break with newer
servers, but don't really know the details.

regards, tom lane

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