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08/19/2002 at 09:52AM PDT, ID: 20338448
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8.6

How to Attach or restore db from .mdf and ldf files after db deleted

Asked by brettz in Databases Miscellaneous

Tags: mdf, files, restore, database

Someone completely deleted my SQL Server 7 database.  I retrieved the .LDF and .MDF files from a network backup.  Now I am trying to attach the database.  I have tried this without creating an instance of the database by using the attach stored procedure to attache the .LDF and .MDF files I retrieved from the network backup.  Also, I have tried it by creating an instance of the database and doing a detach of the newly created db .LDF and .MDF files and an attach of the .LDF and .MDF files I retrieved from the network backup.  Neither of these approaches have worked.


Here is what I have tried in the Query Analyzer, but to no avail:


For the following example, I created a database instance called 'qarun_diamond_48_brett' with brand new .ldf and .mdf files and then tried to detach and then attach the .ldf and .mdf files from the network backup:

use master
go
sp_detach_db
'qarun_diamond_48_brett', 'F:\APPS\SQL 7.0\Database\Data\qarun_diamond_48_brett_log.ldf'

Message:  Usage: sp_detachdb <dbname>, [TRUE|FALSE]


use master
go
sp_detach_db
'qarun_diamond_48_brett', 'F:\APPS\SQL 7.0\Database\Data\qarun_diamond_48_brett.mdf'

Message:  Usage: sp_detachdb <dbname>, [TRUE|FALSE]


I tried the following attaches of the retrieved/recoverd .ldf and .mdf from the network to the newly created db instance.  That didn't work, so I tried attaching to a db that had not yet been created.

use master
go
sp_attach_db
'qarun_diamond_48_brett2', 'F:\APPS\SQL 7.0\Database\Data\qarun_diamond_48_brett2_log.ldf'

Message: Server: Msg 1801, Level 16, State 3, Line 1
Database 'qarun_diamond_48_brett' already exists.

If I use a different db name I get the following error:
Server: Msg 5105, Level 16, State 13, Line 1
Device activation error. The physical file name 'qarun_diamond_48_brett' may be incorrect.


use master
go
sp_attach_db
'qarun_diamond_48_brett2', 'F:\APPS\SQL 7.0\Database\Data\qarun_diamond_48_brett2.mdf'

Message: Server: Msg 1801, Level 16, State 3, Line 1
Database 'qarun_diamond_48_brett' already exists.

I have also tried these statements wtih the EXEC sp_attach_db and EXEC sp_detach_db commands from within the Master db in Query Analyzer.

Any help would greatly be appreciated.

Thanks,

-Brett
[+][-]08/19/02 01:14 PM, ID: 7229257

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About this solution

Zone: Databases Miscellaneous
Tags: mdf, files, restore, database
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Solution Provided By: bhess1
Participating Experts: 3
Solution Grade: B
 
 
[+][-]08/20/02 01:42 AM, ID: 7230277

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