Deadlock management in database systems with demultiplexed...

Details Deadlock management in database systems with demultiplexed... Deadlock management in database systems with demultiplexed...

G - Physics

06

F

G06F 17/30 (2006.01) G06F 9/46 (2006.01)

Patent

CA 2322604

A deadlock management system for a demultiplexed database system having worker agents and applications associated with and disassociated from the worker agents. Applications holding locks on database resources and capable of retaining locks when disassociated from worker agents. Providing each application with a flag set in accordance with the existing value of the application flag and in accordance with the state of applications holding and requesting locks. The deadlock management system providing for applications to be placed on a wait queue, a priority queue, or provided worker agents or overflow worker agents depending on the flag value for the application. Declaring deadlocks based on the flag value of applications and on the state of the lock wait graph showing applications holding and requesting locks.

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