Deadlock issues

• LearningDBA

  SSCertifiable

  Points: 6616

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  September 23, 2014 at 9:07 am

  #311756

  I encounter deadlock issues almost every half an hour. Some user gets blocked by somebody. I don't have to kill the session because when user try to resubmit the query, it gets resolved on its own. Is there a way to prevent this deadlock issue?

  "He who learns for the sake of haughtiness, dies ignorant. He who learns only to talk, rather than to act, dies a hyprocite. He who learns for the mere sake of debating, dies irreligious. He who learns only to accumulate wealth, dies an atheist. And he who learns for the sake of action, dies a mystic."[/i]

• ScottPletcher

  SSC Guru

  Points: 101192

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  September 23, 2014 at 9:20 am

  #1747538

  You have to specific with terminology here. A deadlock is a specific type of blocking that cannot be resolved without canceling/abending at least one task. Blocking can eventually clear itself up.

  Are you seeing deadlocks or just blocking?

  SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".

• Shawn Melton

  SSC-Insane

  Points: 24685

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  September 23, 2014 at 11:26 am

  #1747594

  You need to figure out what is blocking the command. You can use the system_health session in SQL Server 2008 to pull the deadlock XML[/url].

  From there you have to determine what process is causing the deadlock and adjust for it. If your users are executing actual T-SQL frequently they should build their queries to workaround or detect for deadlock errors.

  Shawn Melton
  Twitter: @wsmelton
  Blog: wsmelton.github.com
  Github: wsmelton