psql error

"G. Frank Liu" <liug@mama.indstate.edu> writes:

$ psql -U gforge gforge
psql: FATAL: Invalid page header in block 3 of pg_trigger_tgrelid_tgname_index

Any ideas how I can fix it?

See the REINDEX man page. In 7.3 I think you have to go through the
full run-a-standalone-backend pushup to reindex a system index.

Also look into doing some hardware testing, because this suggests you've
got flaky disks or RAM.

regards, tom lane