Log Shipping in SQL Server – A Primer

In this article we look at the concept of Log Shipping and how it works in SQL Server

Log ShippingSQL Server 2016 comes with many high availability options and Log Shipping is one such option. This is actually a technique that incorporates two or even more instances of the server to copy a transaction log file from one server instance to another. As a user, you must note that this unique feature involves not only transferring the log files but also restoring it automatically on different servers. Learn in depth about Log Shipping in SQL Server and what is the need to use it while working on an SQL Server Database?

An Overview

Now, let us throw some light on detailed description of Log Shipping feature in an SQL Server Database 2016. Basically, there Log Shipping In SQL Serverare not one but three main operations done in log shipping procedure. Firstly, it helps in backing up a transaction log right at the primary server instance. Secondly, it helps in copying the transaction log file on the secondary server instance. Lastly, it helps in restoring the log backup again at the secondary server instance. It should also be noted that a log maintained through database log shipping can be shipped to many secondary server instances. On the other hand, log shipping doesn’t provide automatic fail over from a primary server to the secondary or mirror server it must be done manually online; however, it does allows a secondary database to perform various reporting purposes.

Another main thing to know about log shipping is that it required to be initiated from the principal server through SQL Server Management Studio Wizard. Moreover, there are certain steps that must be taken for proper log shipping process and that includes a network path for the backup along with an alert if the backup is not taken. Apart from this, it must be clear that for how long does the backup files must be stored before deleting. This is not all; the backup job must include scheduling the job type, frequency and the duration for the backup.

Advantages of Log Shipping

It’s time to learn about the main advantages of log shipping for an SQL Server Database. The main benefit of using this high availability option is that it gives you a quick disaster recovery solution for not just one or more databases but they should be on different servers. Secondly, this technique helps supporting read only access for secondary databases especially during the interval arriving between restore tasks. Lastly, log shipping plays a big role in allowing a user for a user specified delay when the primary server backs up the log restored in the secondary servers. By doing so, in case of an accidental change, a delay is noticed and data is retrieved from a secondary database.

SQL Server errors are a common occurrence and some of them can compromise your data

It is common to come across errors while working on a SQL Server database. Some of these errors may even compromise your data or crash the SQL database. To deal with such scenarios invest in a sql recovery tool like DataNumen SQL Recovery application. This rather powerful application can tackle a variety of SQL errors and recover data in a jiffy from a crashed file. Even if the compromised SQL file is residing on a virtual drive, the tool can still be used to extract its contents.

Author Introduction:

Alan Chen is President & Chairman of DataNumen, Inc., which is the world leader in data recovery technologies, including access recovery and sql recovery software products. For more information visit https://www.datanumen.com/

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