53.蛤蟆的Oracle杂记——Oracle常用动态视图v$tempstat

53.蛤蟆的Oracle杂记——Oracle常用动态视图v$tempstat

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   视图v$tempstat显示文件的读写静态统计信息

         idle>desc v$tempstat;

 Name                                                           Null?  Type

 ------------------------------------------------------------- ------------------------------------

 FILE#                                                                        NUMBER

 PHYRDS                                                                 NUMBER

 PHYWRTS                                                               NUMBER

 PHYBLKRD                                                             NUMBER

 PHYBLKWRT                                                          NUMBER

 SINGLEBLKRDS                                                               NUMBER

 READTIM                                                               NUMBER

 WRITETIM                                                             NUMBER

 SINGLEBLKRDTIM                                                        NUMBER

 AVGIOTIM                                                              NUMBER

 LSTIOTIM                                                               NUMBER

 MINIOTIM                                                             NUMBER

 MAXIORTM                                                           NUMBER

 MAXIOWTM                                                          NUMBER

 CON_ID                                                                 NUMBER

各个列的含义如下：

FILE#：文件号

 PHYRDS：物理读的数量

 PHYWRTS：DBWR写的次数

 PHYBLKRD：读的物理块数量

 PHYBLKWRT：写到磁盘的块数量

 SINGLEBLKRDS：单块读的数量

 READTIM：花在读上的时间

 WRITETIM：花在写上的时间

 SINGLEBLKRDTIM：累积的单块读时间

 AVGIOTIM：IO的平均时间

 LSTIOTIM：上一次IO花费的时间

 MINIOTIM：单个IO的最小时间

 MAXIORTM：单个读IO的最大时间

 MAXIOWTM：单个写IO的最大时间

 CON_ID：容器ID