Oracle教程 2023-04-05

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

本站中文解释

Oracle视图V$DISPATCHER是表示派发器（调度程序）信息的视图。派发器用于并行注册多个客户端并同时接收和发送请求到服务器，用户可以通过派发器在客户端之间进行分发，以减少客户端之间的交互。派发器还可以用于复制和分发数据到客户端，以便提高系统的整体性能。

V$DISPATCHER视图提供关于正在运行的派发器的状态的详细信息，包括派发器的服务器命名，状态，工作类型，当前服务请求等。

使用V$DISPATCHER视图时，需要在Oracle服务器上执行以下SQL语句：

SELECT * FROM V$DISPATCHER;

这将返回V$DISPATCHER视图中的所有数据，从而帮助诊断派发器。可以使用”WHERE”子句用于筛选数据：

SELECT *
FROM V$DISPATCHER
WHERE STATUS = ‘RUNNING’;

官方英文解释

V$DISPATCHER displays information about the dispatcher processes.

Column	Datatype	Description
`NAME`	`VARCHAR2(4)`	Name of the dispatcher process
`NETWORK`	`VARCHAR2(1024)`	Network address of the dispatcher
`PADDR`	`RAW(4 \| 8)`	Process address
`STATUS`	`VARCHAR2(16)`	Status of the dispatcher: `WAIT` – Idle `SEND` – Sending a message `RECEIVE` – Receiving a message `CONNECT` – Establishing a connection `DISCONNECT` – Handling a disconnect request `BREAK` – Handling a break `TERMINATE` – In the process of terminating `ACCEPT` – Accepting connections (no further information available) `REFUSE` – Rejecting connections (no further information available)
`ACCEPT`	`VARCHAR2(3)`	Indicates whether the dispatcher is accepting new connections (`YES`) or not (`NO`)
`MESSAGES`	`NUMBER`	Number of messages processed by the dispatcher
`BYTES`	`NUMBER`	Size (in bytes) of messages processed by the dispatcher
`BREAKS`	`NUMBER`	Number of breaks occurring in the connection
`OWNED`	`NUMBER`	Number of circuits owned by the dispatcher
`CREATED`	`NUMBER`	Number of circuits created by the dispatcher
`IDLE`	`NUMBER`	Total idle time for the dispatcher (in hundredths of a second)
`BUSY`	`NUMBER`	Total busy time for the dispatcher (in hundredths of a second)
`CPU`	`NUMBER`	Total CPU time for the dispatcher (in millionths of a second)
`LISTENER`	`NUMBER`	Most recent Oracle error number the dispatcher received from the listener
`CONF_INDX`	`NUMBER`	Zero-based index of the `DISPATCHERS` configuration used by the dispatcher
`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

数据运维技术 » Oracle 视图 V$DISPATCHER 官方解释，作用，如何使用详细说明

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