oracle常用脚本-性能分析脚本

1 活动会话历史趋向 select to_char(sample_time,'yyyy-mm-dd hh24:mi:ss'),count(1)   from dba_hist_active_sess_history  where sample_time>sysdate-2/24  and  sample_time<sysdate-1/24  group by to_char(sample_time

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