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Re: Lock-free databases

From: Mark D Powell <Mark.Powell_at_eds.com>
Date: 7 Nov 2005 07:30:10 -0800
Message-ID: <1131377410.830202.214120@o13g2000cwo.googlegroups.com>


Even for read only access where multiversioning with timestamp ordering exists (basically what Oracle uses) access to the block where the consistent view of the data is built has to be restricted. In Oracle's case latches would be used.

Remember that any single threading mechanism no matter if you call it a lock, latch, enqueue, or other name is a lock for the purpose of this discussion which is about "lock free" database products. I say it is not really possible.

HTH -- Mark D Powell -- Received on Mon Nov 07 2005 - 09:30:10 CST

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