Hierarchical locking - PowerPoint PPT Presentation

IBM DB2 10.5 BLU Acceleration

IBM DB2 10.5 BLU Acceleration. Version 1.3 September 13 th , 2013 Vikram S Khatri Maria N Schwenger. TLA BLU. D oes “BLU” stands for anything? Outside IBM – Some examples Blue Chip Value Fund Bulk Loading Unloading Boston Linux Unix Bande Latérale Unique Basic Link Unit

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Distributed Object Transactions

Distributed Object Transactions. Transaction principles Concurrency control The two-phase commit protocol Services for distributed object transactions. Transaction Principles. Transaction cluster several object requests into a coarse-grained unit

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326 views • 13 slides

Transactions

Transactions . Concurrency Control. Improved lock-based concurrency with multiple writes. Update Locks. Shared &amp; Exclusive Locks. An Example. 11 steps. Upgrading Locks. Use Shared Locks when reading Upgrade (if possible) to Exclusive Lock when just before writing

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260 views • 12 slides

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