Sam Saffron <sam.saff...@gmail.com> writes:
> Why would
> "ERROR: operator does not exist: name !~ unknown"
> Come up ?
It's hard to explain that as anything except corrupted system catalogs
in your existing database :-(. If you were really lucky, reindexing
pg_operator would fix it; but since pg_operator is usually pretty static,
it seems unlikely that it suffered index corruption.
> Any way to work around this?
Rather than relying on pg_upgrade, you could try using pg_dump(all)
to extract the data. With some luck, pg_dump wouldn't be affected by
whatever has happened to the pg_operator catalog.
regards, tom lane
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