Query Store forcing plans

• sqlguy80

  SSCrazy

  Points: 2765

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  August 6, 2024 at 6:49 pm

  #4442820

  We have azure MI Business critical in Production and I noticed for a sproc,  MI forced a plan and that was taking 2-3 minutes, once I unforced the plan, it completed  in 1 minute, any ideas if we should remove force plans? also when I execute the sproc it completes in 10-15 seconds, but from api ( postman ) it takes 1-2 minutes, same behavior forced plan suddenly in querystore?

• Jo Pattyn

  SSC-Dedicated

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  August 7, 2024 at 3:01 pm

  #4443013

  Sounds like what I've read earlier today about automatic tuning

  Also, when a plan is forced , it is allow to compile longer?

  https://littlekendra.com/2024/01/17/automatic-plan-forcing-could-be-great-but-isnt-sql-server/

  https://www.brentozar.com/archive/2024/08/video-i-must-be-an-idiot-automatic-tuning-never-works-for-me/

  https://dba.stackexchange.com/questions/339748/azure-sql-managed-instance-1-excessive-initial-compile-times-leading-to-app-ti