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.
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.