Condusiv Technologies Blog

Condusiv Technologies Blog

Blogging @Condusiv

The Condusiv blog shares insight into the issues surrounding system and application performance—and how I/O optimization software is breaking new ground in solving those issues.

IntelliWrite and SQL DBCC false positives - Technical Bulletin

by Michael 10. December 2009 07:34

For SQL DBA's (only):

Diskeeper 2010 with IntelliWrite currently has an issue where Database Consistency Check (DBCC) commands report problems with the database (though no actual problems exist). I guess it could be described as a "false positive" or "false alarm".

The issue is specifically that IntelliWrite's timing in expanding a file changed what the consistency check was expecting. Thereby DBCC incorrectly reports consistency errors. Turning off IntelliWrite makes the alerts go away. Then running DBCC confirms that no errors actually occurred.

So while the issue is very minor (no actual problem) major "problem indicators" do get set off, making for a potentially very unpleasant experience for a DBA. Something we apologize for. 

On a positive note, we've repro'ed the issue and already have a fix. We're starting a field test tomorrow (on Friday, Dec. 10th). The fix should be broadly available later next week or early the following week (depending on how quickly the field test completes). If anyone is interested in testing this patch, you can contact Diskeeper at fieldtest@diskeeper.com.

Until the fix is available, disabling IntelliWrite on a SQL database volume corrects the false alarms.

Lastly, I do want to add that this is the only common reported issue we have seen with IntelliWrite - it is an extremely stable and reliable technology. The software update that will come only needs to fix the issue discussed in this post.

Tags:

Product Alerts

Comments (3) -

12/12/2009 9:08:07 AM #

Thanks for posting this alert. I'm anxiously awaiting the update.

DBAdass United States

1/7/2010 3:47:04 AM #

Hi,

When will the update be available?

Thanks

Jane United Kingdom

1/7/2010 11:13:07 PM #

Actually it already is:
www.diskeeper.com/.../...2010-update-(140898).aspx

You can re-login to your Account page and get the new full version, or simply run Diskeeper's Check For Updates and install the update.

Michael United States

Pingbacks and trackbacks (1)+

Comments are closed

Month List

Calendar

<<  September 2017  >>
MoTuWeThFrSaSu
28293031123
45678910
11121314151617
18192021222324
2526272829301
2345678

View posts in large calendar