Can a database system be restored just from the data under the
I backed-up my database using "rsync /var/lib/pgsql <dest_directory>"
Then I upgraded my rpms from 7.3.4 to 7.4. Then I tried to start the
server as usual and it complained about version conflict (of course).
I removed the 7.4 rpms and went back to 7.3.4 and restared server.
My data are gone - only the template tables are listed.
I copied back from my file backup and this, much to my horror, did not
restore my database - it's as if the tables are all gone, but the file
sizes indicate the data are there.
Any way to recreate a catalog (or whatever) from the data?
The server seemed to be down when I copied - can't see what I could have
done to corrupt the files under /var/lib/pgsql/data/
I couldn't do a pg_dump due to bad OIDs - this was the motivation for
the upgrade - so I seem to have lost everything.
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