postgresqlcorrupt-data

Repair Corrupt database postgresql


I have multiple errors with my postgresql db, which resulted after a power surge:

I cannot access most tables from my database. When I try for example select * from ac_cash_collection, I get the foolowing error:

ERROR: missing chunk number 0 for toast value 118486855 in pg_toast_2619

when I try pg_dump I get the following error:

Error message from server: ERROR:  relation "public.st_stock_item_newlist" does not exist
pg_dump: The command was: LOCK TABLE public.st_stock_item_newlist IN ACCESS SHARE MODE

I went ahead and tried to run reindex of the whole database, I actually I left it runnng, went to sleep, and I found it had not done anything in the morning, so I had to cancel it.

I need some help to fix this as soon as possible, Please help.


Solution

  • Before you do anything else, http://wiki.postgresql.org/wiki/Corruption and act on the instructions. Failure to do so risks making the problem worse.


    There are two configuration parameters listed in the Fine Manual that might be of use: ignore_system_indexes and zero_damaged_pages. I have never used them, but I would if I were desparate ...

    I don't know if they help against toast-tables. In any case, if setting them causes your database(s) to become usable again, I would {backup + drop + restore} to get all tables and catalogs into newborn shape again. Success!