Re: How to remove corrupted blocks from datafile.

[Danisment Gazi Unal (Unal Bilisim)]

Hi Uday,

I don't know in which version dbv is stable; but, I know dbv was very buggy product. I
recommend:

- add event="10231 trace name context forever, level 10" to init.ora. This will 
eliminate
corrupted blocks during full table scan. Note that this event is used while reading 
from
disk. It does not effect cached blocks.
-  rebounce db.
- create <new table> as select * from <corrupted_table>

New table will not contain corrupted block.

Following event should be used if blocks are accessed through index:
event="10233 trace name context forever, level 10"



udaycb wrote:

> Hi,
> I found some corrupted blocks in one of the datafile. I have created the
> temp table by select all the records (excluding the records in corrupted
> blocks) from corrupted table, and dropped the table, renamed the temp table
> back to original. After this when i run DBV on that file, it still shows
> there are some corrupted blocks in the file.  i have two questions,
>
> 1> How do i calculate how many records i have lost?
> 2> How do i remove corrupted blocks from the blocks?
>
> Can anyone tell me ...
> Thanks in advance
> Uday
>
>   ------------------------------------------------------------------------
>                   Name: winmail.dat
>    winmail.dat    Type: DAT Dosyası 
>(application/x-unknown-content-type-dat_auto_file)
>               Encoding: 7bit

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Author: Danisment Gazi Unal (Unal Bilisim)
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