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The FairCom Server ISAM record read counter value could be smaller than expected on a multiprocessor system when multiple connections were reading records at the same time. The logic has been enhanced to ensure that these counts are accurate.
The ISAM counter state variable has been changed to a distributed set of state variables. The number of counter instances in the set is set by the DIST_ISAM_COUNTER_BUCKETS configuration option, which defaults to 8 and has a maximum supported value of 1024. By maintaining multiple counter buckets, and summing the individual buckets prior to displaying the result, the performance impact of this change has been minimized.
