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

本站中文解释

T_FIN

V$AW_AGGREGATE_OPT_FIN 是一个oracle内部性能视图,其主要功能是收集Oracle数据库支持的多种方案的有关的优化方案的汇总信息。当Oracle数据库的优化器可以从多种可能的方案中选择某个方案执行时,这些视图会收集各种可能方案的计算代价和优先信息。

要使用V$AW_AGGREGATE_OPT_FIN视图,可以在Oracle数据库中执行SQL查询来检索其内容:

SELECT * FROM v$aw_aggregate_opt_fin;

官方英文解释

V$AW_AGGREGATE_OP displays the aggregation operators available in analytic workspaces. You can use this view in an application to provide a list of choices.

Column Datatype Description

NAME

VARCHAR2(14)

Keyword for the aggregation operator

LONGNAME

VARCHAR2(30)

Descriptive name for the operator

DEFAULT_WEIGHT

NUMBER

Default weight factor for weighted operators

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$AW_AGGREGATE_OP 官方解释,作用,如何使用详细说明