15.6 Executing the condition analysis result accumulation facility in prediction level 2

The condition analysis result accumulation facility in prediction level 1 analyzes only directory pages because it acquires information only by RDAREA. For this reason, its execution time is comparatively brief.

In prediction level 2, the condition analysis result accumulation facility also acquires information by table and index. This requires analysis of data pages and index pages, resulting in a longer execution time than with prediction level 1.

If you execute the condition analysis result accumulation facility in prediction level 2 during online operations, online jobs may be affected. To minimize the effects on online jobs, you can choose one (or both) of the following execution methods:

The following subsection provides criteria for using these methods and describes how to execute them.

Organization of this section
15.6.1 Interval analysis
15.6.2 Merge analysis
15.6.3 Selection criteria