RE: Adventures in Server restore
- From: Shai Netanel <ShaiNetanel@xxxxxxxxx>
- Date: Mon, 20 Jun 2005 07:39:05 -0700
Hello
I see this problem before..
It is hardware problem; it can be disk problem or Raid / SCSI controller
problem
SP1 for exchange change the db jet and should fix this problem
(After installing SP1 you need to run eseutil /d)
http://www.kbalertz.com/kb_Q314917.aspx
Regards,
Shai Netanel
--
"Andy Cobley" wrote:
> I thought I'd pass on my experience in bringing back an exchange server
> that has gone bad. Basically, although I had done some test backup and
> restore exercises, a real restore turned out to be far from easy.
>
> Basically On Friday night (around midnight) something happened to corrupt
> the priv.edb. I'm not sure what happened (but a online backup was going on)
> I started to get the following messages in the event viewer.
>
> "Information Store (1932) First Storage Group: The database page read from
> the file "F:\mdbdata\priv1.edb" at offset 6660096 (0x000000000065a000) for
> 4096 (0x00001000) bytes failed verification due to a page checksum mismatch.
> The expected checksum was 3713556033693036075 (0x3389338991c82e2b) and the
> actual checksum was 7734955069946726443 (0x6b5814a791c8082b). The read
> operation will fail with error -1018 (0xfffffc06). If this condition
> persists then please restore the database from a previous backup. This
> problem is likely due to faulty hardware. Please contact your hardware
> vendor for further assistance diagnosing the problem. "
>
> The mail service did continue to run though.
>
> On Saturday whilst trying to do a RSG restore from backups things went from
> bad to worse and eventually the server crashed and continued to crash with
> random errors in the event log. I thought it may be a virus, but a check
> revealed not. I did manage to use Exmerge to extract to PST the users
> mailboxes.
>
> The server continues to crash, sometimes not letting me log in. I decided a
> Dialtone recovery would be best. However I couldn't create a new blank
> database. Thanks to Rich Matheisen for pointing out that to create the new
> dialtone database I needed to move the log files to a new location,
> essentially deleting them form the server. So now I've got a diatone
> database and people can send and receive mail.
>
> Next up, use Exmerge to bring back the pst files from Saturday. Bad move,
> one of them must have contained the data that was corrupting the database
> and the server started crashing again with blue screen dumps. I have to
> admit I was losing what little hair I had left. For good measure the IIS
> file MetaBase.xml had become corrupt (presumably because of the crashes)
> causing Exchange services not to start correctly. This was restored from a
> system backup.
>
> The only solution was to disable the exchange services to get the server
> stable. Then create a new dialtone database (thus losing any mail received
> this morning, a backup couldn't be created because the server was only up
> for a couple of minutes at a time.) This has now allowed me to get the
> server running again. I'm going to run it for a day like this just to
> confirm it's stable.
>
> However I can't restore from the pst files on Saturday. So I'm going to
> have to go back to older backup files to get the users mail back.
>
> Andy C
>
>
>
>
.
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