Oracle 视图 V$WAITCLASSMETRIC 官方解释，作用，如何使用详细说明

网络编程 Oracle 视图 V$WAITCLASSMETRIC 官方解释，作用，如何使用详细说明 10-15

本站中文解释

Oracle视图V$WAITCLASSMETRIC查看等待事件产生的影响情况。

* WAIT_CLASS: 指出等待事件类别，包括了像“系统 I/O”、“应用程序”、“网络”等

* TOTAL_WAITS: 总等待次数

* TIME_WAITED_MICRO: 在等待上花费的时间，单位为微秒

* AVERAGE_WAIT: 等待的平均时长，单位为微秒

使用方法：
SELECT *
FROM v$Waitclassmetric;

官方英文解释

V$WAITCLASSMETRIC displays metric values of wait classes for the most recent 60-second interval. A history of the last one hour will be kept in the system.

Column	Datatype	Description
`BEGIN_TIME`	`DATE`	Begin time of the interval
`END_TIME`	`DATE`	End time of the interval
`INTSIZE_CSEC`	`NUMBER`	Interval size (in hundredths of a second)
`WAIT_CLASS#`	`NUMBER`	Number of the class of the wait event
`WAIT_CLASS_ID`	`NUMBER`	Identifier of the class of the wait event
`AVERAGE_WAITER_COUNT`	`NUMBER`	Average waiter count
`DBTIME_IN_WAIT`	`NUMBER`	Percent of database time spent in the wait
`TIME_WAITED`	`NUMBER`	Time waited during the interval (in hundredths of a second)
`WAIT_COUNT`	`NUMBER`	Number of times waited
`TIME_WAITED_FG`	`NUMBER`	Amount of time (in hundredths of a second) spent in waits from this wait class in foreground sessions
`WAIT_COUNT_FG`	`NUMBER`	Number of times foreground processes waited
`CON_ID`	`NUMBER`	The ID of the container to which the data pertains. Possible values include: `0`: This value is used for rows containing data that pertain to the entire CDB. This value is also used for rows in non-CDBs. `1`: This value is used for rows containing data that pertain to only the root n: Where n is the applicable container ID for the rows containing data

编辑：广州明生医药有限公司

标签：微秒,单位,事件,英文,视图