The dumped file is just a plain-text file (Depending on the data types
within your database)
You should be able to open the backup you made with pg_dump in your
favourite editor such as vi and search through for the dodgy data. Clear out
the bad stuff, write it back to disk and you should be good to go.
Obviously this won't "save" the damaged portion of the data, and it may have
unpredictable effects when you take in to account any foreign keys etc you
may have in the database that depends on this data.
Cheers,
~p
> -----Original Message-----
> From: pgsql-admin-owner@postgresql.org [mailto:pgsql-admin-
> owner@postgresql.org] On Behalf Of Anibal David Acosta
> Sent: Monday, 22 October 2007 11:16
> To: pgsql-admin@postgresql.org
> Subject: [ADMIN] Please help (backup)
>
> I have a backup done with "pg_dump" utility.
>
> For some reason the backup file has 8 phisical bad sectors (17 KB of data)
>
> Now when I try to restore the backup all tables are created successfully
> and data of almost all tables restores successfully too, but one table
> (the most important) appear empty.
>
> When I do a pg_restore <backup_file> its show all sql instructions and
> data until arrive to the "damaged sector" and throws a "out of memory"
> exception.
>
> I want to know if is possible to fix the backup file removing the blocks
> in the "bad sectors" in order to restore all other information.
>
> something like file dump surgery :)
>
> Thanks!
>
> Anibal
>
>
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