Kf1mrYI/Vw9FcUK4haI/AAAAAAAANyE/9GC2ZYJZaYMm5RY6puORSTB99OjnP4RUQCLcB/s1600/Server%2BRestructuring%2B-%2B016.jpg' alt='How To Restore A Bak File In Sql Server' title='How To Restore A Bak File In Sql Server' />Backup and Restore Strategies in SQL Server Part 1 Database. Journal. com. Introduction. There are several high availability solutions that can be used with SQL Server, like Always. On, Fail over clustering, or Database mirroring. While these high availability solutions ensure maximum uptime for your databases, you need to setup backup and restore strategies to recover the data or minimize the risk of data loss in case a failure happens. In this article series, I am going to discuss backup and restore strategies in SQL Server in detail. Failures and Importance of Backup and Restore Strategies. Most DBAs dread hearing that they need to restore a database to a point in time, especially if the database is a production database. However, knowing how to do this. Bak files are database backups we can restore the Database backup using SQL Server Management Studio. A. Open SQL Server Management Studio in Object Explorer Right. Recovery for SQL Server. Recover mdf, ndf, bak, ldf file. Recover SQL Server 2008 R2, SQL Server 2008, SQL Server 2005, SQL Server 2005 Express. Home page of Recovery. The following tutorial explains you the backing up and restoration of your MS SQL Server 2008 Database using the Microsoft SQL Server Management Studio Express. There are several high availability solutions which can be used with SQL Server and while these high availability solutions ensure maximum uptime for your databases. This video walks you through how to backup and restore a database in SQL Server 2012. SQL Backup file recovery tool restores SQL Server database from bak file. Also, The SQL backup repair tool is capable to perform full database recovery. I have a. bak file, and I want to use this file to recreate the database in a fresh install of SQL Server 2008 Management Studio. Can someone point me in the right. There are a variety of failures that can occur at various stages of the life of the solution. Though we can take some proactive measures to ensure failures are minimized, its not guaranteed that it will not happen. However, we can set up proper backup and restore strategies to ensure that if any failure happens we have a  mechanism in place it recover from it. There are several types of failure that we often encounter Hardware failure SQL Server instance failure, Network failure, Media and Disk failure Although with the latest hardware in the market and with inbuilt redundancy and failover capabilities, the chances of failure are greatly reduced, it still can happen. For example, the controller on the disk might fail to work, data on the disk might get corrupted etc. System and Software failure This is related to the failure of the operating system, or CPU or main memory of a computer system. System and Software failure may be caused by a power failure, an application or operating system crash, memory error or some other reason. Application failure This kind of failure might happen because of some bugs in an application, which modified insertedupdateddeleted data unwantedly. For example, consider updating the salary for an employee without having a WHERE clause. Another example could be related to logic, for example, the salary for an employee was supposed to be incremented by 2. User failure User failure is similar to application failure with the exception that here data gets modified insertedupdateddeleted unwantedly by a user. For example, a user wanted to delete one specific row from a table but executed the DELETE statement without the WHERE clause. In some of the cases, there are some third party tools to recover a transaction or a group of transactions from transaction log assuming you have non truncated transaction log file but in some other cases where the disk itself got corrupted requires you to rely back on backup files. Types of Backup. Based on your need, you can choose either a simple backup process if data loss is acceptable to some extent or a bit of a complex backup process if you want to have capabilities in hand to recover to the point in time in case of any failure. These are the different types of backup SQL Server allows Full Backup. Full database backup takes a copy of the entire database basically copies all of the pages including the part of the transaction log file so that the full database can be recovered after a full database backup is restored. Backup can be taken on a backup device which could be a local or network disk or local tape drive or Windows Azure blob storage available with SQL Server 2. A full database backup represents the database at the time the backup operation finished and allows restoring to the point in time when the backup was taken. This is the simplest of backup types and often needed prior to the other backup types. With full database backup, you can restore the complete database in one step and as it includes the transaction log with it, it recovers the database to the time when the backup operation finished minus any uncommitted transactions uncommitted transactions are rolled back if you are doing recovery with restore, more on recovery in the next article of this series. USE Adventure. Works. BACKUPDATABASE Adventure. Works. 20. 12. DISKD backupAdventure. Works. 20. 12. Bak. How To Restore A Bak File In Sql Server' title='How To Restore A Bak File In Sql Server' />WITHFORMAT, Specifies whether the media header should be written on the volumes used for this backup operation, overwriting any existing media header and backup sets. COMPRESSION, In SQL Server 2. Enterprise edition and later versions only, specifies whether compression is performed on this backup, overriding the server level default. MEDIANAMEAdventure. Works. 20. 12. Backups. One of the ongoing challenges of a DBA is to backup and restore databases. Backups are done on an automated schedule, but restores can take on many different versions. This post will explain what type of file this is and will show you how to open a. TSQL or with the most common tools available. Rocker Patch Creator Software. NAME Full database backup of Adventure. Works. 20. 12. GOYou can find complete syntax and details about the BACKUP command here. I will discuss the process to setup backup order and types and restore them back in the section Backup and Restore scenario of the next article of the series. Differential Backup. Differential database backup includes only extents collections of eight physically contiguous pages which were changed since the last full database backup. SQL Server looks into the Differential Changed Map DCM page to identify all the extents which were changed since the last full database backup and captures only them hence, often differential database backup is very fast compared to taking a full database backup. Differential Changed Map DCM is a bitmap page that contains a bit for every extent and tracks the extents that have changed since the last full database backup. When you take full database backup, the bit for each extent is reset to 0 and then if there is any change in the extent after that, the bit is changed to 1. During differential backup, SQL Server identifies all the extents for which the bit value is 1 by looking at these DCM pages and hence the length of time that a differential database backup runs is proportional to the number of extents modified value set to 1 since the last full database backup and not the overall size of the database. The last full database backup its mandatory to have a full database backup at least once to start with differential database backups, upon which the differential backup is based, is called the base of the differential backup. Generally, the older a differential backup base is, the larger a new differential backup will be, as the difference between the current database and a specific differential backup base increases. The longer the time between differential database backup and its base, the larger the differential backup would be in size sometimes approaching the size of the base itself. This means a large differential database backup loses the advantages of a faster and smaller backup if the time between a differential database backup and its base grows significantly longer. This also increases the time to restore a database and hence its recommended to take a full database backup at set intervals to establish a new differential base. For example, you might consider taking a full database backup on every Sunday followed by a regular series of differential database backups from every Monday through Saturday. Differential backups are cumulative in nature, which means if you take a full database backup on Sunday followed by differential backups on Monday, Tuesday and Wednesday, and if you want to restore till Wednesday, then you must restore your latest full database backup first followed by restoring the most recent differential backup i. Wednesday only. USE Adventure. Works. 20. 12. BACKUPDATABASE Adventure. Works. 20. 12. DISKD backupAdventure. Works. 20. 12. Differential.