Oracle 视图 DBA_HIST_IC_DEVICE_STATS 官方解释,作用,如何使用详细说明

本站中文解释

DBA_HIST_IC_DEVICE_STATS视图是Oracle数据库中使用的一种特殊类别的视图,用于报告每个实例和每个控制文件中所有磁盘卷组的I/O设备相关信息。它包含了磁盘组的名称和它在数据库负载中的统计信息,主要包括DB_BLOCK_GETS, DB_BLOCK_ CHANGES, READ_TIME, WRITE_TIME, READ_SERV_COPY_TIME, WRITE_SERVE_COPY_TIME等。

使用DBA_HIST_IC_DEVICE_STATS视图,可以监控和剂量分析服务器的I/O性能,从而能够从I/O瓶颈的角度优化性能。

官方英文解释

DBA_HIST_IC_DEVICE_STATS displays operating system information about the usage of interconnect devices by the machine.

This usage contains Oracle usage but is not limited to it. The quality of the information depends on the operating system.

Column Datatype NULL Description

SNAP_ID

NUMBER

NOT NULL

Unique snapshot ID

DBID

NUMBER

NOT NULL

Database ID for the snapshot

INSTANCE_NUMBER

NUMBER

NOT NULL

Instance number for the snapshot

IF_NAME

VARCHAR2(256)

NOT NULL

Name of the device (same as NAME in DBA_HIST_CLUSTER_INTERCON)

IP_ADDR

VARCHAR2(64)

NOT NULL

IP address of the device (same as IP_ADDRESS in DBA_HIST_CLUSTER_INTERCON)

NET_MASK

VARCHAR2(16)

Network mask

FLAGS

VARCHAR2(32)

Flags

MTU

NUMBER

Maximum transmission unit

BYTES_RECEIVED

NUMBER

Number of bytes received since operating system start time

PACKETS_RECEIVED

NUMBER

Number of packets received since operating system start time

RECEIVE_ERRORS

NUMBER

Number of receive errors since operating system start time

RECEIVE_DROPPED

NUMBER

Number of receive messages that were dropped

RECEIVE_BUF_OR

NUMBER

Number of receive buffer overruns experienced

RECEIVE_FRAME_ERR

NUMBER

Number of receive errors due to frame error

BYTES_SENT

NUMBER

Number of bytes sent since operating system start time

PACKETS_SENT

NUMBER

Number of packets sent since operating system start time

SEND_ERRORS

NUMBER

Number of send errors since operating system start time

SENDS_DROPPED

NUMBER

Number of send messages that were dropped

SEND_BUF_OR

NUMBER

Number of send buffer overruns experienced

SEND_CARRIER_LOST

NUMBER

Number of send errors due to carrier lost

CON_DBID

NUMBER

The database ID of the PDB for the sampled session

CON_ID

NUMBER

The ID of the container that CON_DBID identifies. 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


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