Tuesday, March 31, 2015

SQL Server -How to move the “system database” files in SQL Server


It’s Very Simple 10 steps to do this.

In this example System database files existing in C: Drive and I will move it in D: Drive.

Step1- Check the D drive is access. Right click on D drive and go to Properties, go to security tab and find the Administrator “group or username” is there on not.

Step2- Next Step to create a folder in D drive. And the folder name should be as SQL server “Instance ID” name, which is “MSSQL10.MSSQLSERVER”. We can get this name from existing SQL server path for example see following path:-   

C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA

We can say this folder is the Data container for all System Database files.
Now we have to check the folder permission of the folder and if anything is missing so we will give that permission to newly created folder MSSQL10.MSSQLSERVER”.  

Step 3- Open the both old folder and newly create folder properties and click on security tab and match the old folder and newly create folder “group name” and “permission” and click on ADD button than search the “group name” and ADD it in new folder.

Step4- Now we will move the Model and MSDB and TEMPDB database.
USE master;
GO
ALTER DATABASE tempdb
MODIFY FILE (NAME = modeldev, FILENAME = 'D:\MSSQL10.MSSQLSERVER\model.mdf');
GO
ALTER DATABASE tempdb
MODIFY FILE (NAME = modellog, FILENAME = 'D:\MSSQL10.MSSQLSERVER\modellog.ldf');
GO

USE master;
GO
ALTER DATABASE tempdb
MODIFY FILE (NAME = msdbdev, FILENAME = 'D:\MSSQL10.MSSQLSERVER\msdb.mdf');
GO
ALTER DATABASE tempdb
MODIFY FILE (NAME = msdblog, FILENAME = 'D:\MSSQL10.MSSQLSERVER\msdblog.ldf');
GO

USE master;
GO
ALTER DATABASE tempdb
MODIFY FILE (NAME = tempdev, FILENAME = 'D:\MSSQL10.MSSQLSERVER\tempdb.mdf');
GO
ALTER DATABASE tempdb
MODIFY FILE (NAME = templog, FILENAME = 'D:\MSSQL10.MSSQLSERVER\templog.ldf');
GO

Step 5- Stop the SQL server instance and COPY the Model and MSDB database file form C: Drive and PASTE it into D Drive- D:\MSSQL10.MSSQLSERVER .  Now we can START the SQL server instance.

Note- No Need to move TEMPDB files. Once the instance will START it will create automatic new TEMPDB log files.

Step 6- Now we have to move Master database. Go to Configuration manager, Right click on SQL server Instance and Properties, Click on Advanced tab. Here we will get the “Startup Parameters” value.
“Startup Parameters” value:-
-dC:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\master.mdf;-eC:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\Log\ERRORLOG;-lC:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\mastlog.ldf

In this value we need to change the Path of each log file. Our current log file path is- D:\ MSSQL10.MSSQLSERVER

New “Startup Parameters” value:-
-dD:\ MSSQL10.MSSQLSERVER\master.mdf;-eC:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\Log\ERRORLOG;-lD:\ MSSQL10.MSSQLSERVER \mastlog.ldf

Step 7- Now we have to STOP the SQL server instance.  Copy the Master database log files and Paste it in D Drive D:\ MSSQL10.MSSQLSERVER.

Step 8- Verify all the file has been moved in New Location,

Step 9- Delete the ALL the System Database files from C drive.

Step 10- Now we must have to START the SQL server instance. 

AND ROCK and ROLL 






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Sunday, March 29, 2015

SQL Server: Best practice to Move database from one Location to another location.


Most of  SQL Server professional may know the how to move the database form One location to another location. And most of the professional use the "detach and attach" method but..

"Is it best practice?"   NO!!

WHY? – If your database file size is1TB or around 1TB it is not a best practice. So here is the question how to move the database if the database files size is large.

Why it not good practice because while attaching the database it will create the New database on new location where we are moving the database log files. So in this case the existing user will be removed from the database.

Actually it’s quite easy.

Please find the below steps-
USE master;
GO

-- Return the logical file name.
SELECT * FROM sys.master_files WHERE database_id = DB_ID('MY_test_DB')
    AND type_desc = 'LOG';
GO

-- Offline the database
ALTER DATABASE MY_test_DB SET OFFLINE;
GO


-- Physically move(Copy and Paste) the file to a new location.
-- Now we have to modify the path specified in FILENAME to the new location of the file on your server.

ALTER DATABASE MY_test_DB MODIFY FILE ( NAME = MY_test_DB_Log,
FILENAME = 'D:\NewLocation\MY_test_DB_Log.ldf');
GO

-- Online the Database
ALTER DATABASE MY_test_DB SET ONLINE;
GO

--Verify the new location file location.
SELECT * FROM sys.master_files WHERE database_id = DB_ID('MY_test_DB')
    AND type_desc = 'LOG';


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