Tag: Blocking

  • Troubleshoot SQL Server Blocking, Step by Step

    Blocking isn’t a bug, it’s SQL Server enforcing correctness: one session holds a lock, another wants a conflicting one, and it has to wait. Most blocking resolves in milliseconds and nobody notices. The problem is blocking that doesn’t resolve fast, a query queued behind a session that’s holding a lock far longer than it should,…

    Written by

    Peter Whyte

  • Reading and Fixing a SQL Server Deadlock

    🚨Part of the SQL Server Errors series, the exact messages and what actually causes them.Related pillar: Blocking & Locking What Msg 1205 Says Msg 1205  ·  Level 13  ·  State 51 Transaction (Process ID 93) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction. ⚡The…

    Written by

    Peter Whyte

  • DBA Scripts: Performance and Troubleshooting

    🔧Part of the DBA-Tools Project, copy/paste SQL Server scripts and health checks. Something is slow · the investigation You are past the point of guessing. This pillar is the middle step: turning “it feels slow” into a named, evidenced cause before you change anything. Look up the wait type Pick a diagnostic scriptYou are here…

    Written by

    Peter Whyte

  • DBA Scripts: Collect Blocking and Deadlock Events

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    🔧Part of the DBA-Tools Project, copy/paste SQL Server scripts and health checks.In: Maintenance & Automation › Collectors & Baselines Standing Watch for Blocking and Deadlocks, Not Just Checking When Asked Get Blocking Sessions and Get Deadlock Summary answer “what’s happening right now.” These two generators answer a different question: “what happened while nobody was looking.”…

    Written by

    Peter Whyte
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