题目内容
(请给出正确答案)
[单选题]
ORACLE的awr资料中的db_time从哪个规图中可以查到?()
A.dba_hist_snapshot
B.dba_hist_sys_time_model
C.dba_hist_sysstat
D.Vssession
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A.dba_hist_snapshot
B.dba_hist_sys_time_model
C.dba_hist_sysstat
D.Vssession