Brock Williams <brock@xxxxxxxxxxxxx> writes: > I'm getting this message when I try to access one of the databases in > my cluster: > FATAL: cache lookup failed for access method 6881280 Unless you are using a custom index access method you didn't tell us about, this is pretty strong evidence of data corruption in the pg_class system catalog (specifically some pg_class.relam entry). If the corruption extends only as far as those four bytes, it'd be pretty easy to poke the correct value back in ... but it seems likely that this is just the tip of the iceberg :-( Please get a copy of pg_filedump from http://sources.redhat.com/rhdb/utilities.html and show us a dump of the pg_class file from that database (I like the format it produces with -i -f options; note pg_class is file 1259 in all known PG versions). regards, tom lane
