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Technical Article

Migration Guide: Migrating to SQL Server 2012 Failover Clustering and Availability Groups from Prior Clustering and Mirroring Deployments

This paper provides guidance for customers who prior to SQL Server 2012 have deployed SQL Failover Clustering for local high availability and database mirroring for disaster recovery, and who want to migrate to SQL Server AlwaysOn. It describes the corresponding SQL Server AlwaysOn scenario and the migration paths to SQL Server AlwaysOn. It also contains the important knowledge and considerations that you must know in order to successfully migrate to a HADR solution based on SQL Server AlwaysOn technology, which implements AlwaysOn Failover Cluster Instances for high availability and AlwaysOn Availability Groups for disaster recovery.

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2012-04-13

2,738 reads

External Article

Generating Data for Database Tests

It is more and more essential for developers to work on development databases that have realistic data in both type and quantity, but without using real data. It isn't exactly easy, even with third-party tools to hand. Phil Factor shows how it can be done, taking the classic PUBS database and giving it a more realistic set of data.

2012-04-11

4,244 reads

External Article

SQLServerCentral Webinar #17: Monitoring your SQL Server Instances

Join SQL Server MVP Brad McGehee to learn why it is so important to monitor your SQL Server instances and what you should consider when starting out. This webinar will also show you how you can use Red Gate's SQL Monitor for SQL Server monitoring and will include an overview of the new features released in v3.0, including the ability to create your own custom metric definition and to support different access permissions.

2012-04-11 (first published: )

3,412 reads

External Article

Renaming a Published SQL Server Database

I have transactional replication configured in production. I am wondering if we could rename the publication database in transactional replication without having to drop and recreate the replication set up. Also, is it possible to rename the database files of the publication database without affecting the replication configuration.

2012-04-10

2,618 reads

External Article

Bin Packing Problems: The SQL

The 'bin packing' problem isn't just a fascination for computer scientists, but comes up in a whole range of real-world applications. It isn't that easy to come up with a practical, set oriented solution in SQL that gives a near-optimal result.

2012-04-06

2,537 reads

Technical Article

A Few Cool Things You Can Identify Using the Default Trace

If you are running an instance of SQL Server 2005 and above then most likely that instance is running the default trace. This default trace is a canned Profiler server side trace that automatically starts up when SQL Server starts. In this article Greg Larsen explains more about the default trace and shows you how to glean some event information from the trace files created by this background trace process.

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2012-04-05

3,916 reads

External Article

Using Friendly Names for SQL Servers via DNS

Wouldn't it be great if your HR folks only had to put in HR-SQL.mydomain.com for the database connection in their reports? They wouldn't have to remember it was on server Nile and they certainly wouldn't have to change their reports if you migrated their database from the Nile server to the server named Danube. In DNS there are two easy ways to do this.

2012-04-04

3,036 reads

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BIT_COUNT() IV

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Question of the Day

BIT_COUNT() IV

In SQL Server 2025, I run this code: 

select bit_count('A')
What is returned?

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