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Oracle认证考试

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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?()

  • A、Increase the value of table_definition_cache
  • B、Increase the value of table_open_cache_instances
  • C、Decrease the value of table_open_cache_instances
  • D、Increase the value of table_open_cache
  • E、Decrease the value of table_definition_cache
  • F、Decrease the value of table_open_cache
正确答案:B
答案解析:
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