Implementing Log Shipping in .NET

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Log shipping is the automated process of backing up, copying, and restoring the transaction log from one database on a primary server to one or more secondary databases on another server. Using log shipping, you can frequently synchronize the copy of the database with the original, so you can use the copy to distribute query processing for improved performance or as a warm standby database for high availability. This chapter will explain log shipping s components, processes, and requirements. It then will show you how to configure the primary and secondary databases, the various log shipping options, and the optional monitor server for optimal operations.
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Initialize a secondary database. Configure log shipping options. Configure a log shipping mode. Configure monitoring.
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Lesson 1: Preparing to Log Ship . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 653 Lesson 2: Configuring Log Shipping Options . . . . . . . . . . . . . . . . . . . . . . . . . . 658 Lesson 3: Configuring Log Shipping Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 676 Lesson 4: Configuring Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 684
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A computer that meets the hardware and software requirements for Microsoft SQL Server 2005. SQL Server 2005 Developer, Workgroup, Standard, or Enterprise Edition installed. SQL Server Agent running and configured with a Microsoft Windows service account.
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Implementing Log Shipping
Real World
Javier Loria Business users usually like the idea of log shipping because it doesn t require expensive hardware. The first time I explained the benefits of log shipping to one of my customers, she liked the idea so much that she wanted to replace all her clustered servers with a log shipping implementation. I explained that log shipping configurations don t automatically redirect users from one server to another as clustered servers do and that reconfiguring the secondary system as your primary system might take some time. After she reviewed the business objectives of each of her database servers, she chose to use log shipping technology for only three servers that do not run mission-critical applications.
Lesson 1: Preparing to Log Ship
Lesson 1: Preparing to Log Ship
Before you configure log shipping, you need to understand log shipping s architecture and requirements. In this lesson, you ll learn how SQL Server 2005 implements log shipping and its requirements for log shipping.
After this lesson, you will be able to:
Explain how log shipping works. List the server and database requirements for log shipping.
Estimated lesson time: 15 minutes
Understanding Log Shipping
Log shipping synchronizes distributed databases that can reside on different servers or on the same server but within different instances. A log shipping configuration doesn t automatically fail over from the primary server to the secondary server. If you need to switch from the primary database to a secondary database, you bring the secondary database online manually. SQL Server uses SQL Server Agent jobs to automate log shipping operations. Log shipping defines SQL Server Agent jobs to automate backup, copy, and restore processes at scheduled times. SQL Server then stores information about the history of its execution of jobs in the msdb database.
MORE INFO
SQL Server Agent
For more information about SQL Server Agent, see 14, Working with SQL Server Agent Jobs.
NOTE
Log shipping in SQL Server 2005
Unlike in previous versions of SQL Server, log shipping in SQL Server 2005 is not part of the Database Maintenance Plan Wizard.
The recommended log shipping configuration comprises five components: a primary database, a secondary database, a primary server, a secondary server, and a monitor server. Although a separate monitor server is optional, this configuration provides the
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