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--- how_to:repairing_corrupted_database [2016/02/05 11:24] – [Delete the problem message] paul
+++ how_to:repairing_corrupted_database [2016/04/06 12:16] – [Finding the problem table/index] paul
@@ Line 20: / Line 20: @@
 Once you have repaired the database you should ideally perform a manual database backup & restore to ensure there are no other problems before restarting VPOP3.
+=====Finding the problem table/index=====
+Often the error message will say something like:
+  Invalid page header in block x in relation base/16385/512312
+These numbers are 'random' so will be different from one installation to another. To determine which database table/index the relation refers to, follow these instructions
+Go to a command prompt in the VPOP3 directory and run 'psql' (in version 5 only). The default password is 'vpop3pass'
+Then type (or copy/paste)
+  select n.nspname AS schema, c.relname AS tablename, c.relkind as kind from pg_class c inner join pg_namespace n on (c.relnamespace=n.oid) where c.relfilenode=<filename>;
+In the above example error message <filename> would be replaced by 512312
+If 'kind' is 'i' then the damaged relation is an index, so a database reindex should fix the problem. If it is 'r' then it is a normal table, or if it is 't' then it is a 'toast' table (see below).
 =====unexpected chunk number=====

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