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When you look at how SQL Server vs OS/400 implements the database it would
not be surprising the SQL Server would become corrupt. OS/400 maintain each
table at the OS level. Each table and index is a separate object.

In contrast SQL Server is just a single binary file storing everything. SQL
Server not part of the OS, just a program sitting on top of the OS. Think
about must go in when you write a new records with variable length. Data
must be copied from one location to another, space allocated and
de-allocated. The surprising thing to me how well SQL Server manages to run
giving the complexity of what it must do constantly but corruption is just
about inevitable. .


On Tue, Jan 29, 2013 at 4:10 PM, Richard Schoen <richard@xxxxxxxxxxxxxxx>wrote:

To turn the question around, how many of you have seen corruption in your
SQL Server databases ?

Knock on Wood SQL Server has been pretty stable for our usage.

Regards,
Richard Schoen
RJS Software Systems Inc.
Where Information Meets Innovation
Document Management, Workflow, Report Delivery, Forms and Business
Intelligence
Email: richard@xxxxxxxxxxxxxxx
Web Site: http://www.rjssoftware.com
Tel: (952) 736-5800
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Toll Free: (888) RJSSOFT

----------------------------------------------------------------------

message: 1
date: Tue, 29 Jan 2013 13:02:16 -0800
from: Roger Harman <roger_harman@xxxxxxxxxxx>
subject: How the SQL Server World Lives

One of the newsletters I subscribe to is http://www.sqlservercentral.com



A recent article, "My SQL Server Database is Corrupt - Now What?!", had
some interesting statements from the author:



. I was asked how often corruption really occurs in the real world.
My answer was, "hundreds to thousands of times every week across the
world, in the tens of millions of SQL Server databases.".

. Every single week I receive multiple emails asking for some
advice
about corruption recovery. When I'm teaching about corruption in our High
Availability and Disaster Recovery Immersion Event, I always tell the class
that I expect every DBA to see database corruption at some point during
their career.

. I'll end by saying this: if you think that corruption won't
happen
to you at some point in your career, I think you'll be surprised. Be
prepared!



I'm curious.. How many of you have seen corruption on our platform? In
25+ years on S/38, AS/400, and IBM-i, I have NEVER had an issue with
corrupt files/tables. In 1 year of SQL Server at my former employer, I saw
it happen at least 3 times. I was shocked but the Microsoft bigots in the
company just shook it off as status quo.



Here's the article but you have to be a member to read it.
http://www.sqlservercentral.com/articles/Corruption/96117/




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