Friday, February 24, 2012

Does a database need contiguous space?

Although a DB doesn't "need" contiguous space, it generally performs better
if it does have it.
What specifically is the error you get? Does the SQL Server service account
have write permission on that partition?
Tom
----
Thomas A. Moreau, BSc, PhD, MCSE, MCDBA
SQL Server MVP
Toronto, ON Canada
.
"Mike Chiodo" <MikeChiodo@.discussions.microsoft.com> wrote in message
news:B860E70E-2CC7-4644-A624-C21EB0373BCF@.microsoft.com...
Hello,
We had a problem that we're trying to figure out. We have a database that's
about 3.5GB in size on a partition with about 10GB of free space. The
database appeared normal, however when the client tried to write data to it
we'd receive a write error message.
We recreated the database on a different partition with 40GB free and it
works fine now. However we're still trying to figure out why the original
database failed and there comes the question-does SQL need contiguous free
space to work? The drive may be fairly fragmented and while there is ~10GB
free there may not be much contiguous space.
Everything else with SQL appears normal.
Thanks!Hello,
We had a problem that we're trying to figure out. We have a database that's
about 3.5GB in size on a partition with about 10GB of free space. The
database appeared normal, however when the client tried to write data to it
we'd receive a write error message.
We recreated the database on a different partition with 40GB free and it
works fine now. However we're still trying to figure out why the original
database failed and there comes the question-does SQL need contiguous free
space to work? The drive may be fairly fragmented and while there is ~10GB
free there may not be much contiguous space.
Everything else with SQL appears normal.
Thanks!|||Although a DB doesn't "need" contiguous space, it generally performs better
if it does have it.
What specifically is the error you get? Does the SQL Server service account
have write permission on that partition?
Tom
----
Thomas A. Moreau, BSc, PhD, MCSE, MCDBA
SQL Server MVP
Toronto, ON Canada
.
"Mike Chiodo" <MikeChiodo@.discussions.microsoft.com> wrote in message
news:B860E70E-2CC7-4644-A624-C21EB0373BCF@.microsoft.com...
Hello,
We had a problem that we're trying to figure out. We have a database that's
about 3.5GB in size on a partition with about 10GB of free space. The
database appeared normal, however when the client tried to write data to it
we'd receive a write error message.
We recreated the database on a different partition with 40GB free and it
works fine now. However we're still trying to figure out why the original
database failed and there comes the question-does SQL need contiguous free
space to work? The drive may be fairly fragmented and while there is ~10GB
free there may not be much contiguous space.
Everything else with SQL appears normal.
Thanks!|||Yes, the SQL server account has permission to write to that partition. As
far as the error message-it was an error generated by the program not a SQL
error.
I suspect the database was simply corrupt but don't know for certain.
Thanks for your answer-it helped clear up a piece of the puzzle.
Mike
"Tom Moreau" wrote:

> Although a DB doesn't "need" contiguous space, it generally performs bette
r
> if it does have it.
> What specifically is the error you get? Does the SQL Server service accou
nt
> have write permission on that partition?
> --
> Tom
> ----
> Thomas A. Moreau, BSc, PhD, MCSE, MCDBA
> SQL Server MVP
> Toronto, ON Canada
> ..
> "Mike Chiodo" <MikeChiodo@.discussions.microsoft.com> wrote in message
> news:B860E70E-2CC7-4644-A624-C21EB0373BCF@.microsoft.com...
> Hello,
> We had a problem that we're trying to figure out. We have a database that
's
> about 3.5GB in size on a partition with about 10GB of free space. The
> database appeared normal, however when the client tried to write data to i
t
> we'd receive a write error message.
> We recreated the database on a different partition with 40GB free and it
> works fine now. However we're still trying to figure out why the original
> database failed and there comes the question-does SQL need contiguous free
> space to work? The drive may be fairly fragmented and while there is ~10G
B
> free there may not be much contiguous space.
> Everything else with SQL appears normal.
> Thanks!
>|||Yes, the SQL server account has permission to write to that partition. As
far as the error message-it was an error generated by the program not a SQL
error.
I suspect the database was simply corrupt but don't know for certain.
Thanks for your answer-it helped clear up a piece of the puzzle.
Mike
"Tom Moreau" wrote:

> Although a DB doesn't "need" contiguous space, it generally performs bette
r
> if it does have it.
> What specifically is the error you get? Does the SQL Server service accou
nt
> have write permission on that partition?
> --
> Tom
> ----
> Thomas A. Moreau, BSc, PhD, MCSE, MCDBA
> SQL Server MVP
> Toronto, ON Canada
> ..
> "Mike Chiodo" <MikeChiodo@.discussions.microsoft.com> wrote in message
> news:B860E70E-2CC7-4644-A624-C21EB0373BCF@.microsoft.com...
> Hello,
> We had a problem that we're trying to figure out. We have a database that
's
> about 3.5GB in size on a partition with about 10GB of free space. The
> database appeared normal, however when the client tried to write data to i
t
> we'd receive a write error message.
> We recreated the database on a different partition with 40GB free and it
> works fine now. However we're still trying to figure out why the original
> database failed and there comes the question-does SQL need contiguous free
> space to work? The drive may be fairly fragmented and while there is ~10G
B
> free there may not be much contiguous space.
> Everything else with SQL appears normal.
> Thanks!
>

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