Oracle Error ORA-38622: Decision Tree not enough memory, requires at least stringKB

Oracle Error Message

ORA-38622: Decision Tree not enough memory, requires at least stringKB

Reason for the Error

The memory size did not satisfy the minimum memory requirement for decision tree building.

Solution

In workarea_size_policy=’manual’ mode, set _dtree_area_size to a reasonably larger value. Or, In workarea_size_policy=’auto’ mode, please raise pga_aggregate_target to a reasonably larger value.