Oracle-L: Re: Data Block Corruption

From: Krishna Kakatur <Krishna.Kakatur_at_Sun.COM>
Date: Wed, 30 Apr 2003 12:46:55 -0800
Message-ID: <F001.0058D073.20030430124655@fatcity.com>

Any "Hexagonal Editor" can be used to edit data in the Oracle datafile. Search in www.download.com for Hex Editors.

Once you open the datafile in the Editor, search/ find for some known column data, say "CLARK" and edit one character. Now, you will be able to retrive all the other records from the table, except the one edited, for which you will get data block corruption error.

Have a backup of files/ database before you test it!

-- 
Thanks,
Krishna



helpdesk.hcl_at_bplmail.com wrote:


> 

> Hi Ashish,

> 

> DBMS_REPAIR packagein 9i is good enough to check for block corruptions. If

> you want to still testit out, just create one small db and edit the

> datafile and insert a "char" and save it, but this method will not usefull

> in NT, in unix you can test it out.

> 

> --Senthil Kumar.

> Oralce DBA

> HCL.

> 

> 

>                       "Ashish"

>                       <ash03_at_att.net>          To:       Multiple recipients of list ORACLE-L

>                       Sent by:                  <ORACLE-L_at_fatcity.com>

>                       root_at_fatcity.com         cc:

>                                                Subject:  Data Block Corruption

> 

>                       29/04/2003 09:26

>                       PM

>                       Please respond to

>                       ORACLE-L

> 

> 

> 

> Hello all,

> 

> I wanted to test recovery procedure for data block corruption using

> DBMS_REPAIR package.

> To test this I need a database object with a corrupt block. How can I

> corrupt a data block in

> a table?

> 

> TIA

> Ashish

>

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Krishna Kakatur
  INET: Krishna.Kakatur_at_Sun.COM

Fat City Network Services    -- 858-538-5051 http://www.fatcity.com
San Diego, California        -- Mailing list and web hosting services
---------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from).  You may
also send the HELP command for other information (like subscribing).

Received on Wed Apr 30 2003 - 15:46:55 CDT