Sql 2016 Rebuild Master
This blog describes process of rebuilding system databases in clustered environment.Sometimes an unexpected shutdown of SQL Server database server has resulted in crashing of the SQL Server or system databases. In this case when you will try to start SQL Server service, it will not start and if you will check the SQL Server error logs to check error message, you could see the following entries “ Restore the database from a full backup, or repair the database”, “ Cannot recover the master database”. Means that corruption of master database.So system databases must be rebuilt to fix corruption problems in the master, model, msdb, or resource system databases.When master, model, and msdb system databases are rebuilt, the databases are dropped and re-created in their original location. Any user modifications to these databases are lost. For example, you may have user-defined objects in the master database, scheduled jobs in msdb, or changes to the default database settings in the model database.Now to get system databases back to its original position means all SQL logins and jobs, we need to restore last or previous full backup files of master, model and msdb databases.
So it is very important to configure and schedule system databases backup also like other user databases in SQL Server.In this blog, we are using SQL Server 2008 R2 failover cluster.
Sql 2016 Rebuild Master Kit
All the system-level configuration settings and login account information of SQL server are stored in the corresponding SQL Master Database files. It contains information about other databases that are present in SQL server. Master database consist 2 files – master.mdf and mastlog.ldf. Also other information details which are included in master database are processes, locks, remote logins, etc. Since it contains records of all the files existing in database, SQL Server will not even start if the master database is – corrupt or unavailable.
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You can insert and run the SQL Server 2014 installation media. Other method is to run the command prompt and change the location of the directory to the location of setp.exe file present on the local server. The default location of the file on server is C:Program FilesMicrosoft SQL Server120Setup BootstrapRelease. In a command prompt window enter the given commands. The command prompt should be run as administrator. If you are using Windows operating system in which User Account Control is enabled, running setup may require more privileges. Restore the recent full backup of the master database.
Sql 2016 Rebuild Master Database
If the backup is not available or the current backup is not updated, recreate the missing entries. The most suitable way to recreate missing entries is by running the scripts that created the entries. Restore the distribution database if the instance of your SQL server is configured as a replication distributor.
Move the master database to the previously recorded location. Verify whether the previously recorded values and server-wide configurations values match with each other.