The benefits of variable logging are reduced elapsed times for most update applications and reduced LXX write and read I/O. The CPU cost of using variable logging is about the same as using fixed logging. For an overview of the variable LXX block size feature, see the CA Datacom/DB Database and System Administration Guide.
Also related to variable logging are the following Multi-User startup options: X_LOG_AHEAD_BLKS and X_LOG_MINIMUM_BLK, as described in the CA Datacom/DB Database and System Administration Guide.
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