Method and article of manufacture for ensuring fair access to information using propagation delays to determine when to release object locks
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United States of America Patent
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May 3, 2016
Issued Date -
N/A
app pub date -
Jun 22, 2012
filing date -
Apr 18, 2008
priority date (Note) -
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Abstract
Locks placed on corresponding objects held in a plurality of databases located at different nodes in a network during replication are released in accordance with fairness criteria. Propagation delays are determined between a transaction initiating node and one or more other nodes in the network. An object is locked during a transaction being executed at the transaction initiating node. Corresponding objects are locked at one or more other nodes in the network that are manipulated as a result of the replication Upon determining that the object locks should be released, the propagation delays are used to determine when to release the object locks so that all of the object locks at the one or more other nodes are released in accordance with the fairness criteria.
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