单项选择题
A.Re-install the audit plugin
B.Execute the command FLUSH LOGS
C.Execute the command SET GLOBAL audit_log_fiush= ON
D.Move or rename the existing audit.log file
单项选择题 What is true regarding InnoDB locking?（）
单项选择题 Which statement is true about the log-output variable?（）
单项选择题 You are investigating the performance of the server and see the following information: Events_waits_summary_global_by_event_name in the performance schema shows that the wait/synch/mutex/sql/LOCK_table_cache event is dominating other wait events. The table_open_cache_overflows status variable is 0. Which action should be taken to remove the performance bottleneck described here?（）
