System Assertion Check failed

  • On SQL2005 i ran a DB Update script. Among a lot of other things it does (re)create a lot of indexes. On a few indexes we get the following error:

    ERROR : 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.

    Now i tried DBCC with all different options, but it did not find any corruption.

    In an effort to resolve this issue i also applied the latest hotfix, SQLServer2005-KB953752-x86-ENU.exe. This did not fix the problem.

    Is this a bug, will we need to have Microsoft have a look at it?

  • I encountered the same error as well. Does anyone has any solution for this? Kindly advice.

    Regards,monkeyDBAWe dont grow when things are easy; We grow when we face challenges.

  • Me too.

    Getting this error running an INSERT statement with (TABLOCK). Resulting in a Stack dump. The table is NOT compressed/replicated, CHECKDB does not reveal any errors. Using SQL Server 2008 R2 build 10.50.1600.1 (no Service Packs).

    Error log excerpts :

    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.

    SQL Server Assertion: File: <pageref.cpp>, line=922 Failed Assertion = 'IS_OFF (BUF_MINLOGGED, m_buf->bstat) || pageModifyType != PageModifyType_Contents || GetPagePtr ()->IsTextPage ()'. This error may be timing-related. If the error persists after rerunning the statement, use DBCC CHECKDB to check the database for structural integrity, or restart the server to ensure in-memory data structures are not corrupted.

  • Call Microsoft Customer Support.

    Gail Shaw
    Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
    SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

    We walk in the dark places no others will enter
    We stand on the bridge and no one may pass

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