Romain Vinot wrote:
Hi,
We've got a problem with postgres 8.0 (our own code is not ready yet for
the new driver) but a production database is already on postgres 8.0
(too bad, we didn't tested it enough...).
What "new driver"? I wasn't aware of 8.0 not being able to work with
drivers for 7.4
So we need to migrate back to postgres 7.4 and wait for a code upgrade.
Is there a possible way to do this ?
pg_dump output of 8.0 is not compatible with 7.4. But the output of
"pg_dump -a" seems to be compatible.
One solution would be to create tables with a 7.4 sql script. Then use
pg_dump to get the data from the 8.0 database and fill them in the 7.4
database. And finally restore all functions and triggers from a 7.4 sql
script.
I've had to do something similar. The easiest solution is to pg_dump
--schema-only and run that through a perl script or similar to
translate/correct any parts that are wrong.
First though, verify that the downgrade is necessary. What specifically
is the problem with 8.0?
--
Richard Huxton
Archonet Ltd
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