ORA-38622: Decision Tree not enough memory, requires at least [string]KB

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

Action: 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.

Error Type: ORA

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