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

本站中文解释

Oracle视图DBA_HIST_CON_SYS_TIME_MODEL用来查看系统时间模型的基本信息。

用途：DBA_HIST_CON_SYS_TIME_MODEL视图主要用于观察时间模型的历史数据。它可以帮助用户了解历史的系统时间模型及其实际数据，从而判断系统活动的情况。

使用：要使用这个视图，可以执行一条SELECT语句，如SELECT * FROM DBA_HIST_CON_SYS_TIME_MODEL，将会显示出此视图中的所有字段。也可以对具体的字段进行查询，如，SELECT DB_NAME, DBID, COMMIT_RATE FROM DBA_HIST_CON_SYS_TIME_MODEL;

官方英文解释

DBA_HIST_CON_SYS_TIME_MODEL displays historical system time model statistics, including OLAP timed stastistics. This view contains snapshots of V$SYS_TIME_MODEL.

Column Datatype NULL Description

SNAP_ID

NUMBER

Unique snapshot ID

DBID

NUMBER

Database ID for the snapshot

INSTANCE_NUMBER

NUMBER

Instance number for the snapshot

STAT_ID

NUMBER

Statistic ID

STAT_NAME

VARCHAR2(64)

Statistic name

VALUE

NUMBER

Statistic value

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:

  • When queried from a non-CDB, the statistics for that instance are returned, and the CON_ID value is 0.

  • When queried from the root of a CDB, the statistics in every container are returned, and the CON_ID value indicates the container to which the statistics belong.

  • When queried from a PDB, statistics from that PDB are returned, and the CON_ID value is the container ID for that PDB.

See Also:

  • “V$CON_SYSMETRIC”

  • “DBA_HIST_SYS_TIME_MODEL”

  • “V$SYS_TIME_MODEL”


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