Database Snapshot (SQL Server 2005)

Hi,
--
Sorry for posting my question in this group. Isn't Micsrosoft going to
create new forums for SQL2K5?
--
BOL states that the snapshot file(sparse file) is small when it is created,
and gradually grows. But I tried on my databases (even big ones) and its
size is the same as original data files. For example on AdventureWorks, the
sparse file I created took 223mb which is even bigger than the db itself!
Any help would be greatly appreciated.
LeilaRight-click the file in explorer, properties, check "size on disk".
Tibor Karaszi, SQL Server MVP
http://www.karaszi.com/sqlserver/default.asp
http://www.solidqualitylearning.com/
"Leila" <Leilas@.hotpop.com> wrote in message news:usZ5Tdr5FHA.2576@.TK2MSFTNGP10.phx.gbl...[
color=darkred]
> Hi,
> --
> Sorry for posting my question in this group. Isn't Micsrosoft going to cre
ate new forums for
> SQL2K5?
> --
> BOL states that the snapshot file(sparse file) is small when it is created
, and gradually grows.
> But I tried on my databases (even big ones) and its size is the same as or
iginal data files. For
> example on AdventureWorks, the sparse file I created took 223mb which is e
ven bigger than the db
> itself!
> Any help would be greatly appreciated.
> Leila
>[/color]|||That is the way a sparse file works. It appears as large as it can be but
in reality it is only a few bytes to begin with and will grow as it gets
populated. Right click on the file in Explorer and choose properties. You
will see both sizes.
Andrew J. Kelly SQL MVP
"Leila" <Leilas@.hotpop.com> wrote in message
news:usZ5Tdr5FHA.2576@.TK2MSFTNGP10.phx.gbl...
> Hi,
> --
> Sorry for posting my question in this group. Isn't Micsrosoft going to
> create new forums for SQL2K5?
> --
> BOL states that the snapshot file(sparse file) is small when it is
> created, and gradually grows. But I tried on my databases (even big ones)
> and its size is the same as original data files. For example on
> AdventureWorks, the sparse file I created took 223mb which is even bigger
> than the db itself!
> Any help would be greatly appreciated.
> Leila
>|||"Leila" <Leilas@.hotpop.com> wrote in message
news:usZ5Tdr5FHA.2576@.TK2MSFTNGP10.phx.gbl...
> Hi,
> --
> Sorry for posting my question in this group. Isn't Micsrosoft going to
> create new forums for SQL2K5?
> --
I hope not. It's just SQL Server.

> BOL states that the snapshot file(sparse file) is small when it is
> created, and gradually grows. But I tried on my databases (even big ones)
> and its size is the same as original data files. For example on
> AdventureWorks, the sparse file I created took 223mb which is even bigger
> than the db itself!
>
Sparse files have a logical size and a smaller physical size. You are just
seeing the logical size of the file.
http://msdn.microsoft.com/en-us/library/ms175823.aspx
Look at the available space on your drive before and after creating the
snapshot. You will find that although the file is reported as being 223mb,
the available space on your drive has hardly diminished at all.
David|||And just to add, within SQL you can use fn_virtualfilestats to get the
actual size on disk of a snapshot e.g.
select db_name(DbId) as [Database],
sum(cast(((BytesOnDisk/1024.0)/1024.0) as numeric(25,2))) as [SizeOnDisk_MB]
from fn_virtualfilestats(-1,-1)
group by db_name(DbId)
You should see your snapshot database is a lot smaller than the database
it's based on (initially at least!)
HTH
Jasper Smith (SQL Server MVP)
http://www.sqldbatips.com
I support PASS - the definitive, global
community for SQL Server professionals -
http://www.sqlpass.org
"Leila" <Leilas@.hotpop.com> wrote in message
news:usZ5Tdr5FHA.2576@.TK2MSFTNGP10.phx.gbl...
> Hi,
> --
> Sorry for posting my question in this group. Isn't Micsrosoft going to
> create new forums for SQL2K5?
> --
> BOL states that the snapshot file(sparse file) is small when it is
> created, and gradually grows. But I tried on my databases (even big ones)
> and its size is the same as original data files. For example on
> AdventureWorks, the sparse file I created took 223mb which is even bigger
> than the db itself!
> Any help would be greatly appreciated.
> Leila
>

Database Snapshot (SQL Server 2005)

Hi,
Sorry for posting my question in this group. Isn't Micsrosoft going to
create new forums for SQL2K5?
BOL states that the snapshot file(sparse file) is small when it is created,
and gradually grows. But I tried on my databases (even big ones) and its
size is the same as original data files. For example on AdventureWorks, the
sparse file I created took 223mb which is even bigger than the db itself!
Any help would be greatly appreciated.
Leila
Right-click the file in explorer, properties, check "size on disk".
Tibor Karaszi, SQL Server MVP
http://www.karaszi.com/sqlserver/default.asp
http://www.solidqualitylearning.com/
"Leila" <Leilas@.hotpop.com> wrote in message news:usZ5Tdr5FHA.2576@.TK2MSFTNGP10.phx.gbl...
> Hi,
> --
> Sorry for posting my question in this group. Isn't Micsrosoft going to create new forums for
> SQL2K5?
> --
> BOL states that the snapshot file(sparse file) is small when it is created, and gradually grows.
> But I tried on my databases (even big ones) and its size is the same as original data files. For
> example on AdventureWorks, the sparse file I created took 223mb which is even bigger than the db
> itself!
> Any help would be greatly appreciated.
> Leila
>
|||That is the way a sparse file works. It appears as large as it can be but
in reality it is only a few bytes to begin with and will grow as it gets
populated. Right click on the file in Explorer and choose properties. You
will see both sizes.
Andrew J. Kelly SQL MVP
"Leila" <Leilas@.hotpop.com> wrote in message
news:usZ5Tdr5FHA.2576@.TK2MSFTNGP10.phx.gbl...
> Hi,
> --
> Sorry for posting my question in this group. Isn't Micsrosoft going to
> create new forums for SQL2K5?
> --
> BOL states that the snapshot file(sparse file) is small when it is
> created, and gradually grows. But I tried on my databases (even big ones)
> and its size is the same as original data files. For example on
> AdventureWorks, the sparse file I created took 223mb which is even bigger
> than the db itself!
> Any help would be greatly appreciated.
> Leila
>
|||"Leila" <Leilas@.hotpop.com> wrote in message
news:usZ5Tdr5FHA.2576@.TK2MSFTNGP10.phx.gbl...
> Hi,
> --
> Sorry for posting my question in this group. Isn't Micsrosoft going to
> create new forums for SQL2K5?
> --
I hope not. It's just SQL Server.

> BOL states that the snapshot file(sparse file) is small when it is
> created, and gradually grows. But I tried on my databases (even big ones)
> and its size is the same as original data files. For example on
> AdventureWorks, the sparse file I created took 223mb which is even bigger
> than the db itself!
>
Sparse files have a logical size and a smaller physical size. You are just
seeing the logical size of the file.
http://msdn.microsoft.com/en-us/library/ms175823.aspx
Look at the available space on your drive before and after creating the
snapshot. You will find that although the file is reported as being 223mb,
the available space on your drive has hardly diminished at all.
David
|||And just to add, within SQL you can use fn_virtualfilestats to get the
actual size on disk of a snapshot e.g.
select db_name(DbId) as [Database],
sum(cast(((BytesOnDisk/1024.0)/1024.0) as numeric(25,2))) as [SizeOnDisk_MB]
from fn_virtualfilestats(-1,-1)
group by db_name(DbId)
You should see your snapshot database is a lot smaller than the database
it's based on (initially at least!)
HTH
Jasper Smith (SQL Server MVP)
http://www.sqldbatips.com
I support PASS - the definitive, global
community for SQL Server professionals -
http://www.sqlpass.org
"Leila" <Leilas@.hotpop.com> wrote in message
news:usZ5Tdr5FHA.2576@.TK2MSFTNGP10.phx.gbl...
> Hi,
> --
> Sorry for posting my question in this group. Isn't Micsrosoft going to
> create new forums for SQL2K5?
> --
> BOL states that the snapshot file(sparse file) is small when it is
> created, and gradually grows. But I tried on my databases (even big ones)
> and its size is the same as original data files. For example on
> AdventureWorks, the sparse file I created took 223mb which is even bigger
> than the db itself!
> Any help would be greatly appreciated.
> Leila
>

Database Snapshot (SQL Server 2005)

Hi,
Sorry for posting my question in this group. Isn't Micsrosoft going to
create new forums for SQL2K5?
BOL states that the snapshot file(sparse file) is small when it is created,
and gradually grows. But I tried on my databases (even big ones) and its
size is the same as original data files. For example on AdventureWorks, the
sparse file I created took 223mb which is even bigger than the db itself!
Any help would be greatly appreciated.
Leila
Right-click the file in explorer, properties, check "size on disk".
Tibor Karaszi, SQL Server MVP
http://www.karaszi.com/sqlserver/default.asp
http://www.solidqualitylearning.com/
"Leila" <Leilas@.hotpop.com> wrote in message news:usZ5Tdr5FHA.2576@.TK2MSFTNGP10.phx.gbl...
> Hi,
> --
> Sorry for posting my question in this group. Isn't Micsrosoft going to create new forums for
> SQL2K5?
> --
> BOL states that the snapshot file(sparse file) is small when it is created, and gradually grows.
> But I tried on my databases (even big ones) and its size is the same as original data files. For
> example on AdventureWorks, the sparse file I created took 223mb which is even bigger than the db
> itself!
> Any help would be greatly appreciated.
> Leila
>
|||That is the way a sparse file works. It appears as large as it can be but
in reality it is only a few bytes to begin with and will grow as it gets
populated. Right click on the file in Explorer and choose properties. You
will see both sizes.
Andrew J. Kelly SQL MVP
"Leila" <Leilas@.hotpop.com> wrote in message
news:usZ5Tdr5FHA.2576@.TK2MSFTNGP10.phx.gbl...
> Hi,
> --
> Sorry for posting my question in this group. Isn't Micsrosoft going to
> create new forums for SQL2K5?
> --
> BOL states that the snapshot file(sparse file) is small when it is
> created, and gradually grows. But I tried on my databases (even big ones)
> and its size is the same as original data files. For example on
> AdventureWorks, the sparse file I created took 223mb which is even bigger
> than the db itself!
> Any help would be greatly appreciated.
> Leila
>
|||And just to add, within SQL you can use fn_virtualfilestats to get the
actual size on disk of a snapshot e.g.
select db_name(DbId) as [Database],
sum(cast(((BytesOnDisk/1024.0)/1024.0) as numeric(25,2))) as [SizeOnDisk_MB]
from fn_virtualfilestats(-1,-1)
group by db_name(DbId)
You should see your snapshot database is a lot smaller than the database
it's based on (initially at least!)
HTH
Jasper Smith (SQL Server MVP)
http://www.sqldbatips.com
I support PASS - the definitive, global
community for SQL Server professionals -
http://www.sqlpass.org
"Leila" <Leilas@.hotpop.com> wrote in message
news:usZ5Tdr5FHA.2576@.TK2MSFTNGP10.phx.gbl...
> Hi,
> --
> Sorry for posting my question in this group. Isn't Micsrosoft going to
> create new forums for SQL2K5?
> --
> BOL states that the snapshot file(sparse file) is small when it is
> created, and gradually grows. But I tried on my databases (even big ones)
> and its size is the same as original data files. For example on
> AdventureWorks, the sparse file I created took 223mb which is even bigger
> than the db itself!
> Any help would be greatly appreciated.
> Leila
>

Database Snapshot (SQL Server 2005)

Hi,
--
Sorry for posting my question in this group. Isn't Micsrosoft going to
create new forums for SQL2K5?
--
BOL states that the snapshot file(sparse file) is small when it is created,
and gradually grows. But I tried on my databases (even big ones) and its
size is the same as original data files. For example on AdventureWorks, the
sparse file I created took 223mb which is even bigger than the db itself!
Any help would be greatly appreciated.
LeilaRight-click the file in explorer, properties, check "size on disk".
--
Tibor Karaszi, SQL Server MVP
http://www.karaszi.com/sqlserver/default.asp
http://www.solidqualitylearning.com/
"Leila" <Leilas@.hotpop.com> wrote in message news:usZ5Tdr5FHA.2576@.TK2MSFTNGP10.phx.gbl...
> Hi,
> --
> Sorry for posting my question in this group. Isn't Micsrosoft going to create new forums for
> SQL2K5?
> --
> BOL states that the snapshot file(sparse file) is small when it is created, and gradually grows.
> But I tried on my databases (even big ones) and its size is the same as original data files. For
> example on AdventureWorks, the sparse file I created took 223mb which is even bigger than the db
> itself!
> Any help would be greatly appreciated.
> Leila
>|||That is the way a sparse file works. It appears as large as it can be but
in reality it is only a few bytes to begin with and will grow as it gets
populated. Right click on the file in Explorer and choose properties. You
will see both sizes.
--
Andrew J. Kelly SQL MVP
"Leila" <Leilas@.hotpop.com> wrote in message
news:usZ5Tdr5FHA.2576@.TK2MSFTNGP10.phx.gbl...
> Hi,
> --
> Sorry for posting my question in this group. Isn't Micsrosoft going to
> create new forums for SQL2K5?
> --
> BOL states that the snapshot file(sparse file) is small when it is
> created, and gradually grows. But I tried on my databases (even big ones)
> and its size is the same as original data files. For example on
> AdventureWorks, the sparse file I created took 223mb which is even bigger
> than the db itself!
> Any help would be greatly appreciated.
> Leila
>|||"Leila" <Leilas@.hotpop.com> wrote in message
news:usZ5Tdr5FHA.2576@.TK2MSFTNGP10.phx.gbl...
> Hi,
> --
> Sorry for posting my question in this group. Isn't Micsrosoft going to
> create new forums for SQL2K5?
> --
I hope not. It's just SQL Server.
> BOL states that the snapshot file(sparse file) is small when it is
> created, and gradually grows. But I tried on my databases (even big ones)
> and its size is the same as original data files. For example on
> AdventureWorks, the sparse file I created took 223mb which is even bigger
> than the db itself!
>
Sparse files have a logical size and a smaller physical size. You are just
seeing the logical size of the file.
http://msdn.microsoft.com/en-us/library/ms175823.aspx
Look at the available space on your drive before and after creating the
snapshot. You will find that although the file is reported as being 223mb,
the available space on your drive has hardly diminished at all.
David|||And just to add, within SQL you can use fn_virtualfilestats to get the
actual size on disk of a snapshot e.g.
select db_name(DbId) as [Database],
sum(cast(((BytesOnDisk/1024.0)/1024.0) as numeric(25,2))) as [SizeOnDisk_MB]
from fn_virtualfilestats(-1,-1)
group by db_name(DbId)
You should see your snapshot database is a lot smaller than the database
it's based on (initially at least!)
--
HTH
Jasper Smith (SQL Server MVP)
http://www.sqldbatips.com
I support PASS - the definitive, global
community for SQL Server professionals -
http://www.sqlpass.org
"Leila" <Leilas@.hotpop.com> wrote in message
news:usZ5Tdr5FHA.2576@.TK2MSFTNGP10.phx.gbl...
> Hi,
> --
> Sorry for posting my question in this group. Isn't Micsrosoft going to
> create new forums for SQL2K5?
> --
> BOL states that the snapshot file(sparse file) is small when it is
> created, and gradually grows. But I tried on my databases (even big ones)
> and its size is the same as original data files. For example on
> AdventureWorks, the sparse file I created took 223mb which is even bigger
> than the db itself!
> Any help would be greatly appreciated.
> Leila
>sql

Database Snapshot (SQL Server 2005)

Hi,
--
Sorry for posting my question in this group. Isn't Micsrosoft going to
create new forums for SQL2K5?
--
BOL states that the snapshot file(sparse file) is small when it is created,
and gradually grows. But I tried on my databases (even big ones) and its
size is the same as original data files. For example on AdventureWorks, the
sparse file I created took 223mb which is even bigger than the db itself!
Any help would be greatly appreciated.
LeilaRight-click the file in explorer, properties, check "size on disk".
Tibor Karaszi, SQL Server MVP
http://www.karaszi.com/sqlserver/default.asp
http://www.solidqualitylearning.com/
"Leila" <Leilas@.hotpop.com> wrote in message news:usZ5Tdr5FHA.2576@.TK2MSFTNGP10.phx.gbl...[v
bcol=seagreen]
> Hi,
> --
> Sorry for posting my question in this group. Isn't Micsrosoft going to cre
ate new forums for
> SQL2K5?
> --
> BOL states that the snapshot file(sparse file) is small when it is created
, and gradually grows.
> But I tried on my databases (even big ones) and its size is the same as or
iginal data files. For
> example on AdventureWorks, the sparse file I created took 223mb which is e
ven bigger than the db
> itself!
> Any help would be greatly appreciated.
> Leila
>[/vbcol]|||That is the way a sparse file works. It appears as large as it can be but
in reality it is only a few bytes to begin with and will grow as it gets
populated. Right click on the file in Explorer and choose properties. You
will see both sizes.
Andrew J. Kelly SQL MVP
"Leila" <Leilas@.hotpop.com> wrote in message
news:usZ5Tdr5FHA.2576@.TK2MSFTNGP10.phx.gbl...
> Hi,
> --
> Sorry for posting my question in this group. Isn't Micsrosoft going to
> create new forums for SQL2K5?
> --
> BOL states that the snapshot file(sparse file) is small when it is
> created, and gradually grows. But I tried on my databases (even big ones)
> and its size is the same as original data files. For example on
> AdventureWorks, the sparse file I created took 223mb which is even bigger
> than the db itself!
> Any help would be greatly appreciated.
> Leila
>|||"Leila" <Leilas@.hotpop.com> wrote in message
news:usZ5Tdr5FHA.2576@.TK2MSFTNGP10.phx.gbl...
> Hi,
> --
> Sorry for posting my question in this group. Isn't Micsrosoft going to
> create new forums for SQL2K5?
> --
I hope not. It's just SQL Server.

> BOL states that the snapshot file(sparse file) is small when it is
> created, and gradually grows. But I tried on my databases (even big ones)
> and its size is the same as original data files. For example on
> AdventureWorks, the sparse file I created took 223mb which is even bigger
> than the db itself!
>
Sparse files have a logical size and a smaller physical size. You are just
seeing the logical size of the file.
http://msdn.microsoft.com/en-us/library/ms175823.aspx
Look at the available space on your drive before and after creating the
snapshot. You will find that although the file is reported as being 223mb,
the available space on your drive has hardly diminished at all.
David|||And just to add, within SQL you can use fn_virtualfilestats to get the
actual size on disk of a snapshot e.g.
select db_name(DbId) as [Database],
sum(cast(((BytesOnDisk/1024.0)/1024.0) as numeric(25,2))) as [SizeOnDisk
_MB]
from fn_virtualfilestats(-1,-1)
group by db_name(DbId)
You should see your snapshot database is a lot smaller than the database
it's based on (initially at least!)
HTH
Jasper Smith (SQL Server MVP)
http://www.sqldbatips.com
I support PASS - the definitive, global
community for SQL Server professionals -
http://www.sqlpass.org
"Leila" <Leilas@.hotpop.com> wrote in message
news:usZ5Tdr5FHA.2576@.TK2MSFTNGP10.phx.gbl...
> Hi,
> --
> Sorry for posting my question in this group. Isn't Micsrosoft going to
> create new forums for SQL2K5?
> --
> BOL states that the snapshot file(sparse file) is small when it is
> created, and gradually grows. But I tried on my databases (even big ones)
> and its size is the same as original data files. For example on
> AdventureWorks, the sparse file I created took 223mb which is even bigger
> than the db itself!
> Any help would be greatly appreciated.
> Leila
>

Database ownership

Hi
Can an NT GROUP own a database in SQL2000 ? I'm trying to have users in the group create objects with dbo owner ship by default.
However sp_changedbowner does not seem to recogise the group as a login even though sp_helplogins lists it .
Thanksmay be a bug with sp_changedbowner, when done through EM it works.|||Originally posted by Paul Young
may be a bug with sp_changedbowner, when done through EM it works.

Thanks Paul.

I can't seem to see where to do this in EM. Do you mean by adding the group to the dbo role?|||yup!
under Security, right click on the group, select Properties, then Database Access Tab, select the db, and click on the db_owner.|||Originally posted by Paul Young
yup!
under Security, right click on the group, select Properties, then Database Access Tab, select the db, and click on the db_owner.

Thanks again

However I'm getting tables owned by individual nt users which cannot be seen by other members of that group (i'm testing with users
connecting via query analyzer using nt authentication.

What I'm looking for is to be able to get the database owned by
the nt group so that any table created by the users are owned by dbo
and not the individual users, or at least have it so that all users of the group can see and manipulate the tables.

Any ideas?|||user tables are always use instead of dbo tables. Also, don't quote me on this, I think if you are aliased to dbo and alter a uesr table the table remains under the users'd id, it's only when you drop and create that the user identity changes.

Can you move all the user objects to a holding db and try your tests again?|||Originally posted by Paul Young
user tables are always use instead of dbo tables. Also, don't quote me on this, I think if you are aliased to dbo and alter a uesr table the table remains under the users'd id, it's only when you drop and create that the user identity changes.

Can you move all the user objects to a holding db and try your tests again?

Thanks for your patience. When a sql login owns a database then
all tables created are dbo.table rather than sqllogin.table

This is what I'm trying to achieve with the NT group .

When I create a table under an nt user which is in that nt group (whose sql login has dbo access to the database) the table is created as ntuser.table , and that nt user appears as a user in the database (where it didn't appear before ).

I tried to run the sp_addalias to get around this too but this also gave me an error as if it didn't recognise the nt group sql login.

I think I'm on the right track its just annoying that I can't find any real information about this scenario. My other option is to ensure that all tables are explicitly created with dbo. but not all 3rd party applications are so forgiving .

Thanks again for your help Paul

database owner with restrictions

I have group of users that I would like to have the ability to create tables
as dbo owners but would deny them insert,update and delete roles in some
tables.
It that scenario possible? If it is how?
Thanks in advance,
Tony
icwgroupdb_ddladmin role will allow the user to do DDL operations (i.e.
create/delete/alter <obj>). See this for other predefined roles:
http://msdn.microsoft.com/library/en-us/adminsql/ad_security_6ndx.asp
-oj
"tony-icwgroup" <tonyicwgroup@.discussions.microsoft.com> wrote in message
news:CA57FF63-5ABE-4B7C-8D3F-21150CE2BC56@.microsoft.com...
>I have group of users that I would like to have the ability to create
>tables
> as dbo owners but would deny them insert,update and delete roles in some
> tables.
> It that scenario possible? If it is how?
> Thanks in advance,
> Tony
> icwgroup

database owner with restrictions

I have group of users that I would like to have the ability to create tables
as dbo owners but would deny them insert,update and delete roles in some
tables.
It that scenario possible? If it is how?
Thanks in advance,
Tony
icwgroup
db_ddladmin role will allow the user to do DDL operations (i.e.
create/delete/alter <obj>). See this for other predefined roles:
http://msdn.microsoft.com/library/en...urity_6ndx.asp
-oj
"tony-icwgroup" <tonyicwgroup@.discussions.microsoft.com> wrote in message
news:CA57FF63-5ABE-4B7C-8D3F-21150CE2BC56@.microsoft.com...
>I have group of users that I would like to have the ability to create
>tables
> as dbo owners but would deny them insert,update and delete roles in some
> tables.
> It that scenario possible? If it is how?
> Thanks in advance,
> Tony
> icwgroup

database owner with restrictions

I have group of users that I would like to have the ability to create tables
as dbo owners but would deny them insert,update and delete roles in some
tables.
It that scenario possible? If it is how?
Thanks in advance,
Tony
icwgroupdb_ddladmin role will allow the user to do DDL operations (i.e.
create/delete/alter <obj> ). See this for other predefined roles:
http://msdn.microsoft.com/library/e...curity_6ndx.asp
-oj
"tony-icwgroup" <tonyicwgroup@.discussions.microsoft.com> wrote in message
news:CA57FF63-5ABE-4B7C-8D3F-21150CE2BC56@.microsoft.com...
>I have group of users that I would like to have the ability to create
>tables
> as dbo owners but would deny them insert,update and delete roles in some
> tables.
> It that scenario possible? If it is how?
> Thanks in advance,
> Tony
> icwgroup