On Tue, 20 Apr 2004, csysi wrote:
> Hello, i upgrade postgres version 7.1 to version 7.4.2 and it tell me that
> the databases are incompatible.
>
> Can i convert the databases ?
Yes, you need to reinstall 7.1, then use the pg_dump/pg_dumpall from 7.4.2
to dump the data out of the running 7.1 database. If you setup the two
databases on seperate machines this is easier to do, and how I usually
upgrade Postgresql at work.