SQL Database Error 3624 – a system assertion check has failed

At times, when SQL Administrator tries to move the database from one SQL server to another, they may encounter the following error message:

Location: statutil.cpp:4128
Expression: iKey < m_statBlob.GetHeader()->GetKeyCount()
SPID: 59 Process ID: 1732
Msg 3624, Level 20, State 1, Line 1
A system assertion check has failed. Check the SQL Server error log for details. Typically, an assertion failure is caused by a software bug or data corruption. To check for database corruption, consider running DBCC CHECKDB. If you agreed to send dumps to Microsoft during setup, a mini dump will be sent to Microsoft. An update might be available from Microsoft in the latest Service Pack or in a QFE from Technical Support.
Msg 0, Level 20, State 0, Line 0
A severe error occurred on the current command. The results, if any, should be discarded.

Reasons for Error 3624

1. The Query derives data by means of the JOIN statement for two or more tables
2. Data compression enabled for only one table
3. Clustered Index key available on a column of the table
4. The column length in one table differs from column length on other tables
5. ON-filter enabled for the column
6. Either the SQL server performs an operation with LOOP JOIN join-hint or this hint is used by Query

The result is that the length of key data is bigger than the length of the compressed key value buffer, thus causing the “SQL Database Error 3624 – a system assertion check has failed”. However, the assertion failure may also be caused due to a software bug or corruption in the database.

Try to find the cause of the error by running the DBCC CHECKDB command and work to resolve the error with most suitable SQL Database recovery option.

How to Resolve SQL Database Error 3624

1. Check Database consistency: DBCC CHECKDB command lets you analyze the exact cause of the error, for example, whether the error is caused due to database corruption or due to a bug in the software’s previous release. Database corruption can be repaired but up to a certain level only.
2. Restore Database from Backup: In case the corruption is too high, try to restore the database from backup, however, check the status before restoring the database from backup. Backup should be up-to-date for restoration and not available in any of the following forms:
   • Not Up-to-date and old: In case the backup is 15 days old then the database for 15 days is not available
   • Not corrupt: Corruption in database backup will not lead to proper restoration. Even if the database is restored from backup, it cannot be used further, due to chances of further corruption
   • Database Backup not available: Database backup is not implemented. Some organizations do not invest their resources in backup and suffer when crises arise.
3. Apply Patches: Assertion error is generally caused due to bugs in the software and fixed with service pack releases. Patching the server with the latest service pack helps in removing the bug-related error.

What If Nothing Works?

If performing the above steps fail to resolve the “SQL Database Error 3624 – A system assertion check has failed”, then try to fix the issue using SQL Recovery software. Use Stellar Repair for MS SQL Software to recover the database and fix the SQL error 3624. The software is available in different versions – Technician, Platinum, and all-in-one Stellar Database Toolkit.

• Technician version consists of one software which is used to repair the corrupt SQL database.
• Platinum version consists of two software. One of these software repairs the corrupt MDF file and restores the SQL database. The other software recovers database from the corrupt backup file.
• Stellar Toolkit for MS SQL is available as a bundle of 3-software – one repairs corrupt SQL database; second restores the database from damaged SQL database backup file and SQL Password Recovery recovers SQL Server database-password when the user forgets the password.

Deploy the right version – Technician, Platinum or Toolkit and start resolving SQL related errors and fixes.

Conclusion

SQL Database error 3624 arises when MDF and NDF files get affected due to a bug or any database corruption. Microsoft releases patches from time to time to help resolve the software bugs. These updates are applied as software extensions. SQL database should not be in a dormant stage for long and most of the time the updated backup is also not available. In that case, installing and recovering SQL Database from Stellar Repair for MS SQL software is the right solution.

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About The Author

Priyanka Chauhan

Priyanka is a technology expert working for key technology domains that revolve around Data Recovery and related software's. She got expertise on related subjects like SQL Database, Access Database, QuickBooks, and Microsoft Excel. Loves to write on different technology and data recovery subjects on regular basis. Technology freak who always found exploring neo-tech subjects, when not writing, research is something that keeps her going in life.