contents of pg_database vanished..
Hi,
I'm having some problems with pg_database -system table. It lost all of
it's contents while database was running. It's actually still running but
I don't know what to do because I'm not sure if it will start up at all
after shutdown.
I noticed the problem while trying to use pg_dump:
tuner@xyzzy:~$ /usr/local/pgsql/bin/pg_dump -Ugalleria galleria
pg_dump: missing pg_database entry for database "galleria"
I could probably insert the missing row to pg_database but there are some
columns I'm not sure about. What are datlastsysoid, datvacuumxid and
datfrozenxid?
Btw, pg version is 7.4.1
Thanks..
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( oo ) Kari Lavikka - tuner@bdb.fi - (050) 380 3808
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Kari Lavikka <tuner@bdb.fi> writes:
I noticed the problem while trying to use pg_dump:
tuner@xyzzy:~$ /usr/local/pgsql/bin/pg_dump -Ugalleria galleria
pg_dump: missing pg_database entry for database "galleria"
Hm. The row must still be there, else you could not have got that far.
If you do "select * from pg_database", do you see all the rows you
expect? How about "select * from pg_database where datname = 'galleria'"?
If you see the row with an unqualified select but not with "where
datname =", then I'd bet on the index for pg_database.datname being
corrupted. You should be able to fix this with REINDEX. Since
pg_database is a shared catalog, that will mean shutting down the
postmaster --- read the details in the REINDEX man page.
regards, tom lane