Category Archives: SQL Server

How to change SQL Server Instance Name?

First collect the output of the current instance configuration. You can get the instance name stored in the SQL Server metadata.

Make sure you have backup of all the database if you are changing the production server instance name.

	sp_helpserver
	select @@servername

You can change the instance name using below query.
Default Instance

	sp_dropserver 'old_name'
        go
        sp_addserver 'new_name','local'
	go

Named Instance

	sp_dropserver 'Server Name\old_Instance_name'
        go
        sp_addserver 'ServerName\New Instance Name','local'
	go

Verify sql server instance configuration by running below queries

	sp_helpserver
	select @@servername

Restart the SQL Server Services.

	net stop MSSQLServer
	net start MSSQLServer

Exception Handling using Try-Catch in SQL Server 2005

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/*
Error Handling using Try Catch Block
*/

CREATE PROCEDURE usp_GetErrorInfo
AS
BEGIN
SET NOCOUNT ON
SELECT
ERROR_NUMBER() AS ErrorNumber,
ERROR_SEVERITY() AS ErrorSeverity,
ERROR_STATE() AS ErrorState,
ERROR_PROCEDURE() AS ErrorProcedure,
ERROR_LINE() AS ErrorLine,
ERROR_MESSAGE() AS ErrorMessage
END
GO

/*
TRY – CATCH in user defined stored procedure
*/

ALTER PROCEDURE TEST
AS
BEGIN
BEGIN TRY
— Generate divide-by-zero error.
SELECT 1/0;
END TRY
BEGIN CATCH
— Execute error retrieval routine.
EXECUTE usp_GetErrorInfo;
END CATCH
END
GO

EXECUTE TEST
GO;

Replication Agents

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Replication Agents

Replication uses a number of standalone programs, called agents, to carry out the tasks associated with tracking changes and distributing data. By default, replication agents run as jobs scheduled under SQL Server Agent, and SQL Server Agent must be running for the jobs to run. Replication agents can also be run from the command line and by applications that use Replication Management Objects (RMO). Replication agents can be administered from SQL Server Replication Monitor and SQL Server Management Studio.

Snapshot Agent The Snapshot Agent is typically used with all types of replication. It prepares schema and initial data files of published tables and other objects, stores the snapshot files, and records information about synchronization in the distribution database. The Snapshot Agent runs at the Distributor.

Replication in SQL Server 2005

Replication is a set of technologies for copying and distributing data and database objects from one database to another and then synchronizing between databases to maintain consistency. Using replication, you can distribute data to different locations and to remote or mobile users over local and wide area networks, dial-up connections, wireless connections, and the Internet.

Replication Types