Server System Variables Command-Line Format --shared-memory[={OFF|ON}] System Variable shared_memory Scope Global Dynamic No SET_VAR  Hint Applies No Platform Specific Windows Type Boolean Default Value OFF Command-Line Format --shared-memory-base-name=name System Variable shared_memory_base_name Scope Global Dynamic No SET_VAR  Hint Applies No Platform Specific Windows Type String Default Value MYSQL Command-Line Format --show-create-table-skip-secondary- engine[={OFF|ON}] Introduced 8.0.18 System Variable show_create_table_skip_secondary_engine Scope Session Dynamic Yes SET_VAR  Hint Applies Yes Type Boolean 879 • show_create_table_skip_secondary_engine • shared_memory_base_name (Windows only.) Whether the server permits shared-memory connections. (Windows only.) The name of shared memory to use for shared-memory connections. This is useful when running multiple MySQL instances on a single physical machine. The default name is  MYSQL . The name is case-sensitive. This variable applies only if the server is started with the  shared_memory  system variable enabled to support shared-memory connections. • shared_memory