> > ERROR: index "pg_class_oid_index" is not a btree > > That means you got bogus data while reading the metapage. > I'm beginning to wonder about the hardware on this server ...
This happened again, and this time I went back through the logs and found that it is always the exact same query causing the issue. I also found it occuring on different servers, which rules out RAM anyway (still shared disk, so those are suspect). This query also sometimes gives errors like this: ERROR: could not read block 3 of relation 1663/1554846571/3925298284: read only 0 of 8192 bytes However, the final number changes: these are invariably temporary relations. The query itself is a GROUP BY over a large view and the explain plan is 107 rows, with nothing esoteric about it. Most of the tables used are fairly common ones. I'm trying to duplicate on a non-production box, without success so far, and I'm loath to run it on production as it sometimes causes multiple backends to freeze up and requires a forceful restart. Any ideas on how to carefully debug this? There are a couple of quicksorts when I explain analyze on a non-prod system, which I am guessing where the temp tables come from (work_mem is 24MB). I'm not sure I understand what could be causing both the 'read 0' and btree errors for the same query - bad blocks on disk for one of the underlying tables? I'll work next on checking each of the tables the view is using. -- Greg Sabino Mullane g...@endpoint.com End Point Corporation PGP Key: 0x14964AC8
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