How do I know If Index is Corrupted in SQL Server?

Puran Kandpal | January 22nd, 2018 | SQL, SQL Server 2016 |

The database has a particular pattern for storing data. It can change over time and get affected by many factors. This delays transaction and fetching of records. It slows down entire operations and creates a panic among employees. Professional users look for solutions on how to check if index is corrupted in SQL Server. It helps in gaining access to the important client and customer information. It restores usual workflow and reinstates normal working. This post helps all those having similar issues. It contains all the answers pertaining to this problem. It suggests some methods to solving it in the best way possible without data and time loss. Read more to find all about it.

How to Check If Index Is Corrupted in SQL Server?

Fetching some rows may possibly have different or deleted values. Running a simple command to ROWID values will result in some missing entries. When a user checks log reports it indicates that the records were edited more than one times. There might not be a single DELETE command used by any of the users. This is a clear indication that something is not right in the database. As administrators, SQL Server database corruption creates a lot of problems in managing the IT infrastructure. It can be quite a hassle and threatens data security and safety. It can be damaging the important information at the back end without the knowledge of the company employees.

Possible Solutions to Fix SQL Server Database Corruption

Here are some optimal ways to find the problem and solve it manually:

Solution#1 Run the DBCC Check

It is a sort of a database console commands used for checking the internal structure. It scans all the records for possible changes in data integrity. It is the primary method to fix SQL Server database corruption. It has the following syntax:

DBCC CHECKDB (databasename) with NO_INFOMSGS, All_ErrorMsgs, TableResults;

This will enlist a number of different errors found within the system. It will also suggest a possible method to repair SQL Server database. It can be either of the following:

REPAIR_REBUILD: It can be used for fixing minor issues and recovering missing rows in the non-clustered index. It will recreate the complete index after comparing the present structure with the old one. It will take a lot of time to fix SQL Server database corruption this way. This method does not have any change of major data loss.

Tip: How to Rebuild and Reorganize Index in SQL Server

REPAIR_ALLOW_DATA_LOSS: This repair mode is suggested if there are too many allocation errors. As the name indicates there may be possible loss of some data is implementing this procedure. It can be used in case of high-level of corruption and when the rebuild method does not recover records.

Solution#2 Restore From a Backup

It can be used if all other methods do not repair SQL Server database. It will help recover old records by restoring from the last backup file created. Note that any of the last edits or changes made will be lost.

A Better and Smarter Way to Repair SQL Server Database

The manual method may affect the data integrity and possibly change some values. This is a huge risk considering the confidential information saved in the store. It can cause compliance or legal issue if any of the records are deleted or modified in some way. It is better to opt for professional tools that are designed just for repairing corrupt database. One such efficient, user-friendly and cost-effective software is the SQL Database Repair. It restores lost or missing tables, views, triggers, stored procedures, rules etc. It gives users dual options to save the retrieved data directly into the current database or to create .sql scripts. It works all available versions of Windows 10/8.1/8/7/XP/Vista for 32 and 64-bit machines.


There are lots of solutions to fix issues with database files. This post mentions a few of the ways on how to check if index is corrupted in SQL Server and repair it. It is optional to choose between manual method or the automated solution. It is an obvious choice to go for the alternative tool. It is easy-to-use and has simple features that even a non-technical person can use.