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UNV-5197
Tech Note
2011-05-23 15:22
2011-05-23 18:20
11.1.0, 11.1.1, and 11.1.2
Alert: U2 Replication Published updates may not be applied on Subscriber under heavy record lock contention.

An issue has been found with U2 Replication where updates done on the Publisher might not be reflected on the Subscriber. The issue involves a situation where the same records are being updated simultaneously by multiple UniVerse processes. A problem was found where the order of operations for the replication writers on the subscriber might not be correct. When this happened, a change made to a record on the Publisher after another update was done to the same record could be lost. When the same record was updated by two processes under heavy load, the update done first on the Publisher might be applied second on the Subscriber. This would result in the changes done by the second update being overwritten and "lost" on the Subscriber


The issue impacts the 11.1.0, 11.1.1, and 11.1.2 releases. The problem has been fixed under RT Issue UNV-5168 and will be available in UniVerse release 11.1.3 and higher.