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

本站中文解释

_INFO

Oracle视图V\$RSRC_PLAN_INFO用于存储并显示数据库中的资源计划，以及资源对每个资源的配置信息。

V\$RSRC_PLAN_INFO视图可以用来验证资源管理器配置的合法性，并可以查看每个资源管理器的配置及其状态。此外，V\$RSRC_PLAN_INFO还能够显示资源计划采用的计划调度方式和登录名。

要使用V\$RSRC_PLAN_INFO视图，可以执行如下SQL语句：

SELECT *
FROM V\$RSRC_PLAN_INFO;

上述查询将显示当前所有资源计划的信息，以及每个资源配置情况。

官方英文解释

V$RSRC_PLAN displays the names of all currently active resource plans.

Column Datatype Description

ID

NUMBER

Resource plan ID (a unique number, consistent across database shutdowns and startups). This is also the data dictionary object ID.

NAME

VARCHAR2(32)

Name of the resource plan

IS_TOP_PLAN

VARCHAR2(5)

Indicates whether the resource plan is the current top plan (TRUE) or whether the resource plan is a subplan of the current top plan (FALSE)

CPU_MANAGED

VARCHAR2(3)

Indicates whether the resource plan has parameters that specify a policy for how the Resource Manager should schedule sessions to manage CPU usage (ON) or whether Resource Manager is not managing CPU usage (OFF)

CPU_SCOPE

VARCHAR2(13)

Reserved for future use

INSTANCE_CAGING

VARCHAR2(3)

Indicates whether instance caging is enabled (ON) or disabled (OFF). Instance caging is enabled if the CPU_COUNT initialization parameter is explicitly modified to a value other than 0 and Resource Manager is enabled.

PARALLEL_SERVERS_ACTIVE

NUMBER

Total number of active parallel servers on the instance

PARALLEL_SERVERS_TOTAL

NUMBER

The value of PARALLEL_SERVERS_TARGET for the instance. Parallel statements are queued if the total number of active parallel servers exceeds this value.

PARALLEL_EXECUTION_MANAGED

VARCHAR2(32)

State of parallel statement queuing:

  • OFF – Parallel statement queuing is disabled

  • STARTUP – Parallel statement queuing is enabled. This is a temporary state that can occur when an Oracle RAC database is undergoing configuration changes

  • FIFO – Parallel statement queuing is enabled. All parallel statements are managed in a single Oracle RAC FIFO queue

  • FULL – Parallel statement queuing is enabled. All parallel statements are managed in per-consumer group queues according to the current resource plan. This state is used when a resource plan that contains resource allocation directives (MGMT_P*) is enabled.

  • DISABLED – Parallel statement queuing is disabled. This state can occur when memory is unavailable for use by parallel statement queuing in the System Global Area (SGA). Restart the Oracle instance to re-enable parallel statement queuing.

For an Oracle RAC database, only the instance running as master Database Resource Manager (DBRM) shows the correct state of parallel statement queuing. All other instances default to the value FULL. A single instance database always shows the correct value for this field.

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

DIRECTIVE_TYPE

VARCHAR2(32)

The type of directive used by this PDB:

  • DEFAULT_DIRECTIVE: The default plan directive

  • PDB: A PDB directive

  • PROFILE: A profile directive

SHARES

NUMBER

Resource allocation for this PDB, expressed in shares

UTILIZATION_LIMIT

NUMBER

Maximum percentage of the container’s resources allowed for this PDB

PARALLEL_SERVER_LIMIT

NUMBER

Maximum percentage of the parallel target the PDB can use before queuing subsequent parallel queries

MEMORY_MIN

NUMBER

The percentage of Exadata Smart Flash Cache and Exadata PMEM cache that is guaranteed to the PDB

This percentage is based on the total amount of space allocated to the CDB for Exadata Smart Flash Cache and Exadata PMEM cache.

See Oracle Exadata System Software User’s Guide for more information.

MEMORY_LIMIT

NUMBER

The maximum percentage of Exadata Smart Flash Cache and Exadata PMEM cache that the PDB can use

This percentage is based on the total amount of space allocated to the CDB for Exadata Smart Flash Cache and Exadata PMEM cache.

See Oracle Exadata System Software User’s Guide for more information.

PROFILE

VARCHAR2(32)

The value of the DB_PERFORMANCE_PROFILE initialization parameter for this PDB

CPU_COUNT

NUMBER

Value of the CPU_COUNT initialization parameter in the container to which the data pertains

CPU_MIN_COUNT

NUMBER

Value of the CPU_MIN_COUNT initialization parameter in the container to which the data pertains

The resource plan with CON_ID=ROOT is the CDB resource plan.

See Also:

  • “DBA_RSRC_PLANS” for a listing of all plans in the database

  • “DBA_CDB_RSRC_PLANS” for information about CDB resource plans

  • “DBA_CDB_RSRC_PLAN_DIRECTIVES” for information about CDB resource plan directives

  • “DB_PERFORMANCE_PROFILE”

  • Oracle Database
    Administrator’s Guide     for information on resource plans

  • Oracle Database PL/SQL
    Packages and Types Reference     for information on defining resource allocation methods for consumer groups with the DBMS_RESOURCE_MANAGER package


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