2.13 OPTIMIZER_INDEX_COST_ADJ

This lets you tune optimizer behavior for access path selection to be more or less index friendly - that is, to make the optimizer more or less prone to selecting an index access path over a full table scan.
Property Description
Parameter type Integer
Default value 100
Recommended Values 50
Range of values 1 to 10000

Oracle Banking Trade Finance relevance

Oracle Banking Trade Finance favors index read over full table scan as it is very useful when optimizer favors to give a lower cost to index scans over full-table scans.