Troubleshooting Database Consistency Errors Reported By DBCC CHECKDB

SQL Server is most of refined database in working condition but there are some situations in which it gets stuck in between. This will leave the SQL database in an inaccessible state. Now, to be sure about the problem, users simply run DBCC CHECKDB command. After that, they face database consistency errors reported by DBCC CHECKDB in SQL Server Let’s understand this & try to find how to fix consistency errors in SQL Server database.

Database Consistency error Message in SQL Server ERRORLOG:

This message determines you need to fix consistency errors in SQL Database.

Why Database Consistency Errors Occurs in SQL Database?

If the user is facing any consistency error in SQL Server or their database of SQL Server detected a logical consistency-based, then there must be some reason behind it. However, the DBCC CHECKDB mainly looks for physical and logical consistency of the database. It includes rows, index relationships, allocation pages, table referential integrity, etc. And, if any of these consistency checks fail, it will generate an error as the command executed.

In case if you need a quick solution to recover SQL MDF File database objects then I suggest you to take the help Automated solution.

Download Now

Now, there can be many possible reasons behind this dbcc checkdb consistency errors in database. For example, corruption in a file system, an issue in a hardware system, damaged pages in memory, the problem in drive or in SQL Server engine. In order to bring the SQL database in the normal working state, it is important to fix consistency errors in the SQL database. In order to know about the same, continue reading the blog below.

Troubleshoot Database Consistency Errors Reported By DBCC CHECKDB – Manual Solution

As discussed above, while executing DBCC CHECKDB command, if there is a failure, there is a consistency error. Now, if a user wants to overcome this error, they need to fix this inconsistency errors. In order to remove consistency errors in the SQL database, the best solution is to restore the data from the backup. However, if a user is unable to restore data from the good backup, then CHECKDB provides an option also to resolve errors. In most of the cases, the main reason behind this corruption is the issue in a file system or in hardware. A user needs to correct it first, then tries to restore and run the commands.

Let us discuss the resolution that will help users to remove consistency errors in SQL database:

• Check the Windows System Event Log
  Whenever there is a Windows System Event Log error, it means there are some I/O problems due to which there is an inconsistency of database. Therefore, we advise users to run a Windows system event log check for any kind of driver, system level, or drive related error. It has many different event IDs based on the inaccessibility of data. However, for every event ID, there is a different resolution to fix the error.
• Run File System Integrity Check
  Another possible reason behind the inconsistency in the SQL database is due to file system integration. Thus, to be sure about it, one needs to run the file system check using chkdsk command. This command will simply generate and display a complete status report for the disk, including the list of all errors on the disks.
• Confirm I/O Requirements of SQL Server
  There are many counters in the SQL Database that are directly related to I/O. All of them are situated under the logical and physical disk. Both of the performance objects contains counters that can handle logical portions of the hard or fixed disk on the machine.
• Check SQLIOSim Tool
  It is a separate application named as SQLIOSim that might also sometimes results in consistency error. It is a tool that is independent of SQL Server Engine and used for testing the disk system I/O integrity. A user can simply download it from the web.
• Use Minimum Repair Option
  Whenever a user runs DBCC CHECKDB, an approximation is used to run the minimum repair option that is important to repair all errors.

The messages will are:

CHECKDB found 0 allocation errors and 15 consistency errors in database
'AdventureWorks'.

repair_allow_data_loss is the minimum level for the errors in the DBCC CHECKDB (AdventureWorks).

This option is basically the minimum level of troubleshooting database consistency Errors Reported By DBCC CHECKDB. It does not mean that every single issue will be fixed by this option. It simply displays the errors, which are not reported by CHECKDB. However, when repair_allow_data_loss is suggested, it will lead to data loss. A user needs to run this option to know whether there is any resolution or not. The option will display the minimum level of repair for that table.

How to Fix Consistency Errors in SQL Server Database – Foolproof Solution

For an efficient and direct approach, we suggest users’ to switch a professional solution. SQL Database File Restoration is one such software that let users SQL Recovery Tool from SQL database in just a few simple clicks. It repair corrupted SQL database file without compromising the integrity of data and recovers all database objects effectively. The software is capable to deal with all type of corruption issues in the SQL database. Also this software is compatible with Microsoft SQL Server 2019 and its below versions.

Download Now Purchase Now

Step-1. Launch the Software as mentioned above.

Step-2. Click on the Open button to Add MDF files in the software.

Step-3. Set Quick or Advance Scan mode as required by users.

Step-4. Enter Destination Platform & Location to proceed.

Step-5. Click on the Export/Save button to finish everything.

Closing Words

If SQL Server is facing consistency error in SQL database, then it will stop SQL Server and make it inaccessible. Thus, to bring SQL database back into the normal working state, it is important to troubleshoot database consistency errors reported by dbcc checkdb. Therefore, this blog discussed both manual tricks and a third-party tool to remove consistency errors in the SQL database.

Frequently Asked Questions