Attaching a file from Network Location

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Attaching a file from Network Location

Darryl Wilson

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Points: 526
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December 22, 2015 at 6:13 am

#303397

I have a backup on a server and I have a VM with SQL on it. Because my VM has limited space on it (99gb), my backup is 17gb expands to over 55gb.
I have instances where I want to restore single rows from tables with a backup (from say, 2 days ago).
I have a mapped drive S: where the backups are or I have a 192.168.xx.xx network address.
I dont have enough room to copy 17gb to the VM and restore it, so can I attach the backup from a network location and get the data I want????
Darryl Wilson
darrylw99@hotmail.com

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Gail Shaw SSC Guru Points: 1004504 More actions · Answer 1

Yes.

https://msdn.microsoft.com/en-us/library/hh759341.aspx

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
We stand on the bridge and no one may pass

sri2015 SSCrazy Points: 2780 More actions · Answer 2

EXEC sp_configure 'show advanced options', 1;

GO

RECONFIGURE;

GO

EXEC sp_configure 'xp_cmdshell',1

GO

RECONFIGURE

GO

EXEC XP_CMDSHELL 'net use H: \\foldername1\foldername2\sharedfoldername3'

EXEC XP_CMDSHELL 'Dir H:'

EXEC XP_CMDSHELL 'net use H: /delete'

EXEC sp_configure 'xp_cmdshell',0

GO

RECONFIGURE

GO

Gail Shaw SSC Guru Points: 1004504 More actions · Answer 3

sri2015 (12/23/2015)
EXEC XP_CMDSHELL 'net use H: \\foldername1\foldername2\sharedfoldername3'
EXEC XP_CMDSHELL 'Dir H:'
EXEC XP_CMDSHELL 'net use H: /delete'

Nope!

SQL does not support mapped drives for database files, just the //server/share format, as per the article referenced above.

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
We stand on the bridge and no one may pass

Jeff Moden SSC Guru Points: 1004415 More actions · Answer 4

GilaMonster (12/23/2015)
sri2015 (12/23/2015)
EXEC XP_CMDSHELL 'net use H: \\foldername1\foldername2\sharedfoldername3'
EXEC XP_CMDSHELL 'Dir H:'
EXEC XP_CMDSHELL 'net use H: /delete'
Nope!
SQL does not support mapped drives for database files, just the //server/share format, as per the article referenced above.

Actually, when created through SQL Server via xp_CmdShell, it does. Been doing it for years. It's just like any other user when you do it that way.

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)

Gail Shaw SSC Guru Points: 1004504 More actions · Answer 5

Ack, didn't notice that the 'not supported' list is for system database locations.

But still, you don't need to go to the extra effort of mapping a drive that the SQL Server service account can see, the \\servername\share syntax for files works fine, without traceflag, from 2012 onwards

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
We stand on the bridge and no one may pass