Need somebody to shed light on SQL Dump files...

  • Hello. I'm still relatively new to the DBA role. I was looking through some of our maintenance logs, and found three files that I'm not sure how to interpret, what created them, or what they're used for. The three files are "SQLDumpxxx.mdmp", "SQLDumpxxx.log", and "SQLDumpxxx.txt".

    Forgive me if this is a newbie question, but I was wondering if anyone can describe these files and/or point me to some resources about these files? I've done google searches, but haven't come up with much.

    Thanks!

  • Those files are the result of a stack dump by SQL Server. As to the cause, very hard to say, if you're getting them frequently I would suggest that you call Microsoft's customer support people as they can interpret the memory dumps (which is what the .mdmp files are) and advice you on correcting them.

    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
  • We also ran into this a few months ago. It turns out there was a "torn page" in our database. In our case the 3 files had corresponding messages in the log file and occured whenever someone tried to access the bad page.

    We did a "dbcc checkdb" and that let us know what was wrong.

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