Server System Variables For connections for which metadata transfer is optional, the client sets the  resultset_metadata system variable to control whether the server returns result set metadata. Permitted values are  FULL (return all metadata; this is the default) and  NONE  (return no metadata). For connections that are not metadata-optional, setting  resultset_metadata  to  NONE  produces an error. For details about managing result set metadata transfer, see Optional Result Set Metadata. The optimizer cost threshold for query offload to a secondary engine. For use with HeatWave. See HeatWave User Guide. • schema_definition_cache • secondary_engine_cost_threshold NONE Introduced 8.0.16 System Variable secondary_engine_cost_threshold Scope Session Dynamic Yes SET_VAR  Hint Applies Yes Type Numeric Default Value 100000.000000 Minimum Value 0 Maximum Value DBL_MAX (maximum double value) Command-Line Format --schema-definition-cache=# System Variable schema_definition_cache Scope Global Dynamic Yes SET_VAR  Hint Applies No Type Integer Default Value 256 Minimum Value 256 870