Re: I/O error offlines a datafile

It's review time, so everything you do is wrong, as a cost saving measure. Any half way competent member of damagement can tell you that.In this particular case though, you could have recovered the datafile online. You should have offlined the tablespace, restored the datafile and recovered the datafile. Restarting the database was not not necessary. Also, one of my religious rituals is to perform a checkpoint after the tablespace has been successfully brought online. The reason is to record the new timestamp to the control file and make sure that all files have the same timestamp (checkpoint process updates file headers during checkpoint).

On 12/08/2003 10:39:32 AM, Gene Gurevich wrote:
> Hi I got the following error in an alert.log file.
> Aparently it was a result of some UNIX issues on a
> hdisk, which have been resolved some time later ..
>
> "Fri Dec 5 18:28:10 2003
> KCF: write/open error block=0x3571 online=1
> file=68 /u21/ORACLE/pfiat02/isysx01_12.dbf
> error=27063 txt: 'IBM AIX RISC System/6000 Error:
> 5: I/O error
> Additional information: -1
> Additional information: 16384'
> Automatic datafile offline due to write error on
> file 68: /u21/ORACLE/pfiat02/isysx01_12.dbf"
>
> The file in question had status = 'RECOVER" in the
> v$datafile and status = 'AVAIALBLE' in
> dba_Data_files. I attempted to restore the file after
> taking it offline, but couldn't due to a lock. I ended
> up bouncing the database an recovering this file. I'm
> wondering whether I should have tired to recover this
> file first without bouncing the database. If anyone
> has any experience with that issue, could you let me
> know whether what I did was wrong or not (and why). Is
> there a document that I can read on this?
>
> thanks
>
> Gene
>
>
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Mladen Gogala
Oracle DBA

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Author: Mladen Gogala
  INET: mladen_at_wangtrading.com

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