[prod-down] Troubleshoot Data Corruption in SQL Server


  • Title: [prod-down] Troubleshoot Data Corruption in SQL Server
  • Category: prod-down
  • Tag(s): SQL Server, Troubleshoot, DBCC
  • Description: You want to troubleshoot and fix database consistency errors.

Common Issue(s)

  • Database in suspect mode
  • DBCC Output: Found N errors and repaired errors
  • MSSQLSERVER_824: SQL Server detected a logical consistency-based I/O error
  • MSSQLSERVER_832: A page that should have been constant has changed
  • MSSQLSERVER2570: Column COLUMNNAME value is out of range for data type "DATATYPE".


  • Fixed-time: 1 working day(s)
  • Fixed-scope: 1 database
  • Fixed-price: $500

Work Breakdown

  • Understand symptoms
  • Find cause
  • Provide solution

Out of Scope

  • Root Cause Analysis (RCA)


  • Quick fix only
  • DBCC CHECKDB should exit with the success message.


  • Database server access
  • Screen sharing, if applicable