Re: Please help (backup) - Mailing list pgsql-admin

-----Original Message-----
From: Anibal David Acosta [mailto:aa@personal.net.py]
Sent: Monday, 22 October 2007 15:33
To: Phillip Smith
Subject: Re: [ADMIN] Please help (backup)

I open with word pad & notepad, but table, functions and other object declarations looks like "plain text" but the DATA nope.

This is the beginnig of something that looks as DB object
---------------------------------------------------------------------
ALTER TABLE ONLY threads
    ADD CONSTRAINT threads_fk1 FOREIGN KEY (forum_id) REFERENCES forums(id) ON DELETE RESTRICT;
 =   ALTER TABLE ONLY public.threads DROP CONSTRAINT threads_fk1;
       public       postgres    false

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

---------------------------(end of broadcast)---------------------------

TIP 4: Have you searched our list archives?

               http://archives.postgresql.org

THINK BEFORE YOU PRINT - Save paper if you don't really need to print this

*******************Confidentiality and Privilege Notice*******************

The material contained in this message is privileged and confidential to

the addressee.  If you are not the addressee indicated in this message or

responsible for delivery of the message to such person, you may not copy

or deliver this message to anyone, and you should destroy it and kindly

notify the sender by reply email.

Information in this message that does not relate to the official business

of Weatherbeeta must be treated as neither given nor endorsed by Weatherbeeta.

Weatherbeeta, its employees, contractors or associates shall not be liable

for direct, indirect or consequential loss arising from transmission of this

message or any attachments

e-mail.

---------------------------(end of broadcast)---------------------------

TIP 1: if posting/reading through Usenet, please send an appropriate

       subscribe-nomail command to majordomo@postgresql.org so that your

       message can get through to the mailing list cleanly