"=?UTF-8?Q?Leonardo_M._Ram=c3=a9?=" <l.rame@xxxxxxxxxxx> writes: > Hi, I'm getting this error: > 2016-09-15 09:35:24 ART [13984-1] ERROR: could not read block 4 in file > "base/12210/11965": Error de entrada/salida That looks like a hardware problem ... might want to budget for a new disk sometime soon, before failures become more prevalent. > 1) Is this caused by a bad block?, can fsck fix it?. yes, and fsck is unlikely to help, though you could try. > 2) Is there a way to re-generate template0?. If you've never modified template1, you could drop template0 and re-create it from template1. Otherwise, pg_dumpall/initdb/reload would seem to be called for. A cautious person might want to do the latter anyway in case there's more problems than just this one. regards, tom lane -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general