Locking Internals By Amit R S Bansal Director, Principal Consultant & Trainer www.PeoplewareIndia.comwww.PeoplewareIndia.com | www.amitbansal.netwww.amitbansal.net.

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Presentation transcript:

Locking Internals By Amit R S Bansal Director, Principal Consultant & Trainer | MVP, MCT, MCTS, MCITP etc.. Follow me on twitter

Technical Director, eDominer Systems & Peopleware India Corporate Trainer/Consultant & Evangelist Conducted more than 450+ workshops on SQL Server & BI for top notch IT companies world wide Microsoft MVP for SQL Server Speaker at TechED India, TechED US & TechED Europe Speaking at SQLBITs this March in London Technical Reviewer/SME – MSL courses & certifications on SQL Server Founder & President – SQLServerGeeks.com Amit R S Bansal

Lock escalation  Row/Page -> Table (default) or  Row/Page -> Partition (if table is partitioned and partition-level locking is enabled)  Never from Row -> Page  & Never from Partition -> Table Update Locks  TRAN A is locking rec1. TranB wants to update rec1, rec2 & rec3.  TRANB will wait for an U lock on rec1, but will not lock rec2 & rec3 (thus increasing concurrency) PAGE locks  Mysterious (watch the demo) Locking Myths debunked

Be a member Presentation & Scripts uploaded on Continue your learning…

 LinkedIN, FB, Twitter, GuestBook  Join my network Personal Site – LinkedIn – Forum – FaceBook – Twitter – Blog – Connect with Amit Bansal

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