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SQL Database Error 3624 – A System Assertion Check Has Failed

  author
Published By Mohit Jha
Nimisha Ramesh
Approved By Nimisha Ramesh
Published On November 28th, 2023
Reading Time 7 Minutes Reading

Fix SQL Error Code 3624 - Troubleshoot Assertion Failures

While running a Transaction-SQL query in SQL Server, sometimes users get an unexpected SQL Database Error 3624. Thus, considering the needs of users to resolve this error, today we have come up with this write-up. Here we will discuss the causes and ways that can resolve this error easily.

Introducing SQL Database Error 3624

SQL Server is one of the most reliable software and this has brought it up in many mid-scale associations. It is a widely used prominent database management service that creates tables, stored procedures, executes queries, retrieves data, deletes records, maintains transaction logs, etc. Although SQL Server is highly authentic, sometimes, it encounters some severe issues.

Many users face SQL Server error 3624 frequently. It marks the database as SUSPECT. When the SQL administrator tries to shift the database from one SQL server to another, then, it displays the error in the following screenshot:

SQL Database Error 3624

SQL database error 3624 error means the system assertion check is failed and now, to resolve this error users have to check the SQL Server error log. The main cause of assertion failure is a software bug or maybe corruption in the database.

For checking the corruption in the database, run the DBCC CHECKDB command. An update from Microsoft may be available in the latest Service Pack or it can be received in a QFE from Technical Support.
Msg 0, Level 20, State 0, Line 0

Why SQL Error Code 3624 Arises?

The main cause of why a system assertion check has failed is bulk data insertion in the SQL Server. Which consequently damages the log file of that specific database. Eventually, it marks the database as SUSPECT. ‌SQL Server 3624 error can occur in any of the following circumstances:

Case-1. If a TABLOCK query is used in SQL.

Case-2. On-Filter is activated for any column.

Case-3. Different column lengths of data tables.

Case-4. When a table contains a non-clustered index.

Case-5. Data compression is enabled for a single table.

Case-6. Prior bulk data insertion and table not truncated.

Case-7. When a column in the table has a clustered index key.

Case-8. When SQL performs a LOOP JOIN or join-hint is used by a query.

Is This a Data Loss Warning Error?

We cannot say that this error means data loss, but there are few chances of data loss after prompting this error. MS SQL Server manages the database via its own strategy of mirroring it to avoid data loss. While any user works with Full Recovery Model then, they must be working with this strategy that creates an accurate replica of the database.

Both database copies are administered by different servers, where the first is on principle and another is on the mirror server. This error mainly affects the mirroring of the database. Thus, there is a risk of data loss. Moreover, the error suspends that mirror database and entire data is present only in the principal database.

Also Read: SQL Error 18456 Login Failed Solved Easily

How to Resolve SQL Database Error 3624?

In this section, we give an overview of all the easy and probable solutions that can easily fix this error code. Moreover, the good news is that here are quite a few ways a user can adopt to make the problem go away.

The tried and tested DBCC CHECK DB mechanism along with the SQL queries act as a generalized issue solver.

If that is too technical for you try restoring a previous version of the Server. Make sure it is the one before you got a system assertion check has failed alert.

In case you don’t have a healthy backup available update to the latest SQL patch released by Microsoft. However, users should be aware that it does not fix their current problem but only prevents it from happening in the future.

With the introduction out of the way, now let’s take a look at each method in detail

Technique 1: Checking the Consistency of the Database

The DBCC CHECKDB command allows users to examine the exact reason for error 3624. We can understand it via an example: the error occurs either due to corruption in a database or by any bug in the application’s previous release.

The DBBC CHECKDB command can repair database corruption, but only up to a certain stage. Here is the code snippent for users convenience:

DBCC CHECKDB
[ ( User_Database_Name | User_Database_ID| 0 [ , NOINDEX | , {REPAIR_ALLOW_DATA_LOSS | REPAIR_FAST | REPAIR_REBUILD} ] ) ]
[ WITH {[ ALL_ERRORMSGS ][ , EXTENDED_LOGICAL_CHECKS ][ , NO_INFOMSGS ]
[ , TABLOCK ][ , ESTIMATEONLY ][ , { PHYSICAL_ONLY | DATA_PURITY } ]
[ , MAXDOP = number_of_processors ]}]]

Note: It is a generalized code make changes to it according to your own situation.

Technique 2: Retrieve Data from the Backup to Resolve SQL Error 3624 

When the corruption level is too high in the database, then, users must try to restore the data from the backup. But before that, verify the status of restoring a database from the backup. The database backup must not exist in any of the following forms:

  • Not so latest and old: If the backup of the database is 15 days old then, the data for 15 days is not available.
  • Not corrupted: If the database is corrupt, it will not lead to an appropriate restoration. In case you have restored the database from backup, it cannot be used for further operations.
  • Absence of Database Backup: The backup of the database has no implementations. Most of the users do not take a backup of the database. Then, they undergo while this error arises.

Technique 3: Use patches To Fix This SQL Server Issue

SQL Database error 3624 usually occurs because of bugs in the software and these can be fixed via service pack releases. Additionally, patching the SQL server with an up-to-date service pack can resolve the bugs in the software and this error can be fixed.

These are all manual ways that can fix SQL error 3624, but there are some limitations to these methods. Moreover, there is no guarantee that this error will resolve completely after applying the mentioned techniques.

Automated Tool For Removing SQL Error Code 3624

As we know now that, the main cause of this problem is corruption in the SQL server database. So, all we have to do is, fix this corruption and restore the database to its healthy form.  

Now, the question arises of how to fix the corruption in the SQL database. Well, do not worry! A guaranteed solution to recover a corrupt SQL database is none other than FreeViewer SQL Recovery Tool. It is one of the most trusted and reliable solutions for recovering the database. Use the steps given below and make ‌SQL error 3624 a thing of the past:

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Step-1. Obtain the tool and run it on your computer.

Launch The Tool

Step-2. Locate the damaged MDF file in the tool itself.

Locate The File

Step-3. Select the Advanced Scan option for a full recovery from SQL Server error 3624.

Choose Advanced Scan

Step-4. Put in or change all the details according to your preferences.

Configure Details

Step-5. Select the target location for the recovered file and press “Export”.

Export The Repaired File

Additional Info: The above-mentioned tool can resolve SQL Server Header Error 5172 also

Conclusion

Resolving ‌SQL error 3624 is not easier said than done especially if you use the manual methods. Therefore, follow the instructions mentioned in this guide to resolve the issue. Moreover, users can utilize a professional solution so that a system assertion check has failed alert does not occur again.