rebuild master database in sql server 2016 step by step

However, there’s a good chance that this method won’t work for most severely corrupted databases. You can do this with the ALTER DATABASE database_name SET MULTI_USER command. Finally, go back to MULTI_USER mode if the repair was successful. You can now run the DBCC CHECKDB (N ‘database_name, REPAIR_REBUILD) command. Again, you can use a Transact-SQL command ALTER DATABASE database_name SET SINGLE_USER to do this. This way, other users cannot modify the data while the restoration is ongoing. Next, you’ll need to put the database in SINGLE_USER mode before attempting repairs. Therefore, Microsoft doesn’t recommend the latter option unless it’s mandatory. As you might have already guessed, the latter option may delete some database pages. The other option is the REPAIR_ALLOW_DATA_LOSS command. The safest option is the REPAIR_REBUILD command. There are a few Transact-SQL repair command options at your disposal at this point. You’ll find this information at the bottom of the message summary. You’ll get back a results report containing the found errors and the recommended minimum level of repair. You can now analyze the database for errors by executing the DBCC CHECKDB (N database_name) WITH ALL_ERRORMSGS, NO_INFOMSGS command. Then, run the query ALTER DATABASE SET EMERGENCY. To do this, open the SQL Server Management Studio (SSMS) by going to Start > All Programs > Microsoft SQL Server > SQL Server Management Studio. This mode gives the administrator read-only access to the database. You’ll first need to put your database in EMERGENCY mode. So you’ll most probably need a specialized recovery tool in most cases.įor this reason, we’ll only go through the basic steps required to attempt to repair/troubleshoot a corrupted database using this method. There’s also the possibility of data loss with some commands. However, it only works for minor corruption issues. The SQL Server Management Studio (SSMS) offers this possibility. In an ideal world, you’d be able to fix a corrupted database locally, quickly, and for free. Step 1 – Attempt Repair with SQL Server Management Studio (Optional)

We’ve also highlighted a few common challenges you might run into during the recovery process. We’ve outlined two main ways to fix a corrupted SQL database.

Regardless, you want to restore the database with minimal possible downtime. Your SQL database can get corrupted for many reasons, including power cuts, hardware crashes, or buggy code.

Rebuild master database in sql server 2016 step by step