Matthias.Pitzl@xxxxxx writes: > invalid page header in block 437702 of relation "xxxx" I concur with Scott that this sounds suspiciously like a hardware problem ... but have you tried dumping out the bad pages with pg_filedump or even just od? The pattern of damage would help to confirm or disprove the theory. You can find pg_filedump source code at http://sources.redhat.com/rhdb/ regards, tom lane