Server Option, System Variable, and Status Variable Reference Name Cmd-Line Option File System Var Status Var Var Scope Dynamic Tc_log_page_waits Yes Global No temptable_max_mmap Yes Yes Yes Global Yes temptable_max_ram Yes Yes Yes Global Yes temptable_use_mmap Yes Yes Yes Global Yes thread_cache_size Yes Yes Yes Global Yes thread_handling Yes Yes Yes Global No thread_pool_algorithm Yes Yes Yes Global No thread_pool_high_priority_connection Yes Yes Yes Both Yes thread_pool_max_active_query_threads Yes Yes Yes Global Yes thread_pool_max_unused_threads Yes Yes Yes Global Yes thread_pool_prio_kickup_timer Yes Yes Yes Global Yes thread_pool_size Yes Yes Yes Global No thread_pool_stall_limit Yes Yes Yes Global Yes thread_stack Yes Yes Yes Global No Threads_cached Yes Global No Threads_connected Yes Global No Threads_created Yes Global No Threads_running Yes Global No time_zone Yes Both Yes timestamp Yes Session Yes tls_ciphersuites Yes Yes Yes Global Yes tls_version Yes Yes Yes Global Varies tmp_table_size Yes Yes Yes Both Yes tmpdir Yes Yes Yes Global No transaction_alloc_block_size Yes Yes Yes Both Yes transaction_allow_batching Yes Session Yes transaction_isolation Yes Yes Yes Both Yes transaction_prealloc_size Yes Yes Yes Both Yes transaction_read_only Yes Yes Yes Both Yes transaction_write_set_extraction Yes Yes Yes Both Yes unique_checks Yes Both Yes updatable_views_with_limit Yes Yes Yes Both Yes upgrade Yes Yes Uptime Yes Global No Uptime_since_flush_status Yes Global No use_secondary_engine Yes Session Yes user Yes Yes 688