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

本站中文解释

V$DNFS_CHANNELS视图主要显示Distributed Network File System（DNFS）接口的使用状况，该接口是用于与外部文件系统进行交换的Oracle DNFS的口令。

V$DNFS_CHANNELS视图中存储的信息包括：通道ID，请求类型，总流量，当前的活动请求的总数，错误次数，当前的活跃请求数，超时的次数，最大排队请求数，当前排队请求数，最大IO数，最后一次澈底时间，以及总空闲时间等。管理员可以根据该视图中的信息来监控DNFS通道的状态，了解DNFS远程调用的性能情况。

要使用V$DNFS_CHANNELS视图，首先需要连接到Oracle数据库，然后输入以下SQL语句：

SELECT * FROM V$DNFS_CHANNELS;

这将会返回所有DNFS通道的详细信息。

官方英文解释

V$DNFS_CHANNELS displays information about the Oracle process connections (channels) open to NFS servers.

Reconnects for the channel on the same port since the last select, given that the reconnect occurred during the first series of reconnect attempts. If the first series of reconnect attempts fails and the reconnect process on that channel times out for 5 minutes, the next reconnect on that channel will not increment either the SPRECO or DPRECO columns, regardless of the port connected to.

Reconnects for the channel on a different port since the last select, given that the reconnect occurred during the first series of reconnect attempts. If the first series of reconnect attempts fails and the reconnect process on that channel times out for 5 minutes, the next reconnect on that channel will not increment either the SPRECO or DPRECO columns, regardless of the port connected to.

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.

The size of fast memory registration (FMR) memory registered by the channel (in bytes)

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数据库远程运维 Oracle 视图 V$DNFS_CHANNELS 官方解释，作用，如何使用详细说明