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

本站中文解释

MARY

Oracle视图DBA_ADVISOR_SQLW_SUMMARY表示SQL建议器的收集的SQL统计信息的汇总,可以分析出最终执行的SQL最大、最小、中间值统计数据,以及当前系统能够处理的最大、最小和中间值。用户可以利用这个视图探讨SQL的性能问题。

使用方法:一般情况下,用户可以在DBA_ADVISOR_SQLW_SUMMARY视图上先选出SQL语句,再找出它相应的SQL ID,进而在 SQL_PLAN_OVERVIEW 视图上进一步分析该语句的执行计划。

官方英文解释

DBA_ADVISOR_SQLW_SUM displays an aggregated picture of all SQLWkld workload objects in the database.

Related View

USER_ADVISOR_SQLW_SUM displays an aggregated picture of the SQLWkld workload objects owned by the current user. This view does not display the OWNER column.

Column Datatype NULL Description

OWNER

VARCHAR2(128)

Owner of the workload object

WORKLOAD_ID

NUMBER

NOT NULL

Unique identifier number of the workload object

WORKLOAD_NAME

VARCHAR2(128)

Unique name of the workload

DESCRIPTION

VARCHAR2(256)

User-specified description of the workload

CREATE_DATE

DATE

NOT NULL

Date on which the workload object was created

MODIFY_DATE

DATE

NOT NULL

Date of last update to the current workload

NUM_SELECT_STMT

NUMBER

Number of SELECT statements in the workload

NUM_UPDATE_STMT

NUMBER

Number of UPDATE statements in the workload

NUM_DELETE_STMT

NUMBER

Number of DELETE statements in the workload

NUM_INSERT_STMT

NUMBER

Number of INSERT statements in the workload

NUM_MERGE_STMT

NUMBER

Number of MERGE statements in the workload

SOURCE

VARCHAR2(128)

Optional name that identifies the creator of the object

HOW_CREATED

VARCHAR2(30)

Optional object or template on which the object was based

DATA_SOURCE

VARCHAR2(2000)

Workload data source

READ_ONLY

VARCHAR2(5)

Indicates whether or not the workload can be modified or deleted (TRUE) or not (FALSE)

See Also:

“USER_ADVISOR_SQLW_SUM”


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