Repair & Restore SQL Master Database

Master database stores most significant instance specific Meta data related to database login accounts, system configuration settings, linked servers and other pointers of entire database. In addition to that database records details and information about all other database created, their location and initialization are present in master database.

It is foremost requirement for starting SQL server, in other words it’s unavailability or improper working does not allow it to open and therefore accessed. This is why for Microsoft SQL server administrators, it is really important to know how to repair corrupt master database and sometimes rebuild if necessary. Which otherwise leads to severe data loss and troubles thereon.

How to know of if master database is corrupt?

Since there could be various reasons responsible for corrupt and then often take place suddenly, it is at times difficult to be recognized. In a particular case, suppose there occurs power failure and the SQL server reboots, but it could not start. On checking the error log, you find the master database is either corrupt or missing and accordingly need to restore master database.

SQL server provides integrity checking options on logical as well as physical basis for all objects of specified database through DBCC CHECKDB. It sub includes 3 modules as DBCC CHECKALLOC, DBCC CHECKTABLE, DBCC CHECKCATALOG for different operations specifically. However once you run DBCC CKECKDB, the modules need not be executed individually. Moreover doing so also validates. Indexed view, table meta data, link level consistency of files and directories, service broker data of database.

But, it is known to all that DBCC CHECKDB could not handle all corruption scenarios, and the database remains to be inaccessible. This is usually for extreme cases of corruption. Moreover, you may even get an error message on running DBCC

CHECKTABLE on corrupt master file “Server: Msg8952, Level 16, State 1, Line 1 Table error: Database ‘master’, index ‘syscolumns.ncsyscolumns’ (ID3) (index ID2). Extra or invalid key for the keys:………CHECKTABLE found 0 allocation errors and 1 consistency errors.

As in the case the repair work could not succeed properly for restoring master database advanced mdf repair software is required. It first of all scan the database thoroughly to repair master database found inconsistency and then restore data. Every database components is safely and completely recovered with the help of exhaustive read only scanning. It is able to repair sql master database created with MS SQL server 2008, 2005 and 2000. It repairs and recovers triggers, tables, defaults, rules, views, procedures and all others.