Further, DBCC CHECKDB or page-level restore cannot fix the boot page corruption. So, its corruption can affect the whole database file. There is only one boot page per SQL database, and it stores the metadata for the entire database. Page-level corruption can happen due to reasons like hardware issues, disk/sub-system failure, malware, faulty updates and patches, etc.īoot page corruption: this is a more critical case of SQL database corruption as it concerns the boot page.
SQL page-level corruption: page-level corruption occurs when the information or data stored in the header, body, or slot array of a database page is altered such that the user cannot access the page. It also outlines a SQL Server database repair tool as an alternative to DBBC CHECKDB with REPAIR_ALLOW_DATA_LOSS argument. This article provides an in-depth understanding of SQL database corruption issues and the methods to repair the corrupted database.
Knowing the reasons for SQL database corruption can help diagnose the root cause and fix it. This situation can lead to prolonged downtime and permanent data loss in the absence of a suitable database repair solution. SQL Server database corruption is troublesome for DBAs, particularly if the situation arrives suddenly and there is no backup.