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

本站中文解释

查看当前系统中所有资源管理计划的指导，其中包括每个资源管理计划的说明，以及所使用的参数值，如: CPU_COUNT、CPU_GROUP、CPU_POLICY、IO_COUNT、IO_GROUP、IO_LIMIT、COLUMN_GROUPS。

要使用DBA_RSRC_PLAN_DIRECTIVES视图，可通过SQL语句查询。例如，可以使用下面的SQL语句获取当前系统中所有资源管理计划的详细信息：

SELECT * FROM DBA_RSRC_PLAN_DIRECTIVES;

官方英文解释

DBA_RSRC_PLAN_DIRECTIVES displays information about all resource plan directives in the database.

Column	Datatype	Description
`PLAN`	`VARCHAR2(128)`	Name of the plan to which the directive belongs
`GROUP_OR_SUBPLAN`	`VARCHAR2(128)`	Name of the consumer group or subplan referred to
`TYPE`	`VARCHAR2(14)`	Indicates whether `GROUP_OR_SUBPLAN` refers to a consumer group (`CONSUMER_GROUP`) or a plan (`PLAN`)
`CPU_P1`	`NUMBER`	This column is deprecated. Use the `MGMT_P1` column instead.
`CPU_P2`	`NUMBER`	This column is deprecated. Use the `MGMT_P2` column instead.
`CPU_P3`	`NUMBER`	This column is deprecated. Use the `MGMT_P3` column instead.
`CPU_P4`	`NUMBER`	This column is deprecated. Use the `MGMT_P4` column instead.
`CPU_P5`	`NUMBER`	This column is deprecated. Use the `MGMT_P5` column instead..
`CPU_P6`	`NUMBER`	This column is deprecated. Use the `MGMT_P6` column instead.
`CPU_P7`	`NUMBER`	This column is deprecated. Use the `MGMT_P7` column instead.
`CPU_P8`	`NUMBER`	This column is deprecated. Use the `MGMT_P8` column instead..
`MGMT_P1`	`NUMBER`	Resource allocation at level 1. For share-based plans, indicates the number of shares.
`MGMT_P2`	`NUMBER`	Resource allocation at level 2.
`MGMT_P3`	`NUMBER`	Resource allocation at level 3.
`MGMT_P4`	`NUMBER`	Resource allocation at level 4.
`MGMT_P5`	`NUMBER`	Resource allocation at level 5.
`MGMT_P6`	`NUMBER`	Resource allocation at level 6.
`MGMT_P7`	`NUMBER`	Resource allocation at level 7.
`MGMT_P8`	`NUMBER`	Resource allocation at level 8.
`ACTIVE_SESS_POOL_P1`	`NUMBER`	Maximum number of calls this consumer group can run concurrently
`QUEUEING_P1`	`NUMBER`	Timeout in seconds for waits in the Active Session Limit queue
`PARALLEL_TARGET_PERCENTAGE`	`NUMBER`	This column is deprecated. Use the `PARALLEL_SERVER_LIMIT` column instead.
`PARALLEL_DEGREE_LIMIT_P1`	`NUMBER`	Sessions in this consumer group are limited to this maximum degree of parallelism for all parallel operations
`SWITCH_GROUP`	`VARCHAR2(128)`	Group to switch to once the switch time is reached
`SWITCH_FOR_CALL`	`VARCHAR2(5)`	Indicates whether to switch back to the initial consumer group once the top call has completed (`TRUE`) or not (`FALSE`)
`SWITCH_TIME`	`NUMBER`	Amount of run time (in seconds) within a group before the session is automatically switched. As with other switch directives, if `SWITCH_FOR_CALL` is `TRUE`, the run time is accumulated from the start of a call. Otherwise, the run time is accumulated for the length of the session.
`SWITCH_IO_MEGABYTES`	`NUMBER`	The maximum megabytes of I/O within a group that will trigger the action specified by `SWITCH_GROUP`. As with other switch directives, if `SWITCH_FOR_CALL` is `TRUE`, the maximum megabytes of I/O is accumulated from the start of a call. Otherwise, the maximum megabytes of I/O is accumulated for the length of the session.
`SWITCH_IO_REQS`	`NUMBER`	The maximum I/O requests within a group that will trigger the action specified by `SWITCH_GROUP`. As with other switch directives, if `SWITCH_FOR_CALL` is `TRUE`, the maximum I/O requests is accumulated from the start of a call. Otherwise, the maximum I/O requests is accumulated for the length of the session.
`SWITCH_ESTIMATE`	`VARCHAR2(5)`	Indicates whether estimated execution time should be used for switch criteria (`TRUE`) or not (`FALSE`)
`MAX_EST_EXEC_TIME`	`NUMBER`	Maximum estimated execution time
`UNDO_POOL`	`NUMBER`	Undo pool size for the consumer group
`MAX_IDLE_TIME`	`NUMBER`	Maximum idle time for the session
`MAX_IDLE_BLOCKER_TIME`	`NUMBER`	Maximum idle time for the session when blocking other sessions
`MAX_UTILIZATION_LIMIT`	`NUMBER`	This column is deprecated. Use `UTILIZATION_LIMIT` instead.
`PARALLEL_QUEUE_TIMEOUT`	`NUMBER`	Time (in seconds) that a query can remain in the parallel statement queue for the consumer group before it is removed from the queue. The `PQ_TIMEOUT_ACTION` directive in a Resource Manager plan can be used in conjunction with the `PARALLEL_QUEUE_TIMEOUT` directive to either cancel or run the removed query. If the `PQ_TIMEOUT_ACTION` directive is not specified, the default behavior is to cancel the query with `ORA-07454`.
`SWITCH_TIME_IN_CALL`	`NUMBER`	This column is deprecated. Specify the time in the `SWITCH_TIME` directive and set `SWITCH_FOR_CALL` to `TRUE`.
`SWITCH_IO_LOGICAL`	`NUMBER`	The number of logical I/Os that will trigger the action specified by `SWITCH_GROUP`. As with other switch directives, if `SWITCH_FOR_CALL` is `TRUE`, the number of logical I/Os is accumulated from the start of a call. Otherwise, the number of logical IOs is accumulated for the length of the session.
`SWITCH_ELAPSED_TIME`	`NUMBER`	The elapsed time that will trigger the action specified by `SWITCH_GROUP`. As with other switch directives, if `SWITCH_FOR_CALL` is `TRUE`, the elapsed time is accumulated from the start of a call. Otherwise, the elapsed time is accumulated for the length of the session.
`PARALLEL_SERVER_LIMIT`	`NUMBER`	Maximum percentage of the parallel target used before queuing subsequent parallel queries
`UTILIZATION_LIMIT`	`NUMBER`	Maximum resource utilization allowed, expressed in percentage
`PARALLEL_STMT_CRITICAL`	`VARCHAR2(12)`	Indicates whether parallel statements from this consumer group are eligible for queuing in the parallel statement queue: `BYPASS QUEUE` – Parallel statements in this consumer group are critical and should never be queued. `QUEUE` – All parallel statements in this consumer group, irrespective of the `PARALLEL_DEGREE_POLICY` initialization parameter value, are eligible for being queued. `FALSE` – Certain parallel statements are eligible for queuing, depending on the `PARALLEL_DEGREE_POLICY` initialization parameter value. This is the default.
`SESSION_PGA_LIMIT`	`NUMBER`	The maximum amount of untunable PGA in MB that sessions in this consumer group can allocate before being terminated
`PQ_TIMEOUT_ACTION`	`VARCHAR2(6)`	Indicates the action to be taken on a parallel query in the parallel queue when its queue time exceeds the limit set by the Resource Manager plan’s `PARALLEL_QUEUE_TIMEOUT` directive: `CANCEL` – The statement terminates with error ORA-07454 `RUN` – The statement runs immediately, and may get downgraded if parallel servers are unavailable
`COMMENTS`	`VARCHAR2(2000)`	Text comment on the plan directive
`STATUS`	`VARCHAR2(128)`	Indicates whether the plan directive is part of the pending area (`PENDING`) or not (NULL). Note: PDB resource plans must be single-level, they cannot contain subplans, and they must have 8 or fewer consumer groups. If a resource plan is imported into a PDB and it violates any of these PDB requirements, then the import will automatically convert the resource plan to a compliant version. The original, unmodified resource plan will be stored with a `STATUS` of `LEGACY`.
`MANDATORY`	`VARCHAR2(3)`	Indicates whether the plan directive is mandatory (`YES`) or not (`NO`). Mandatory plans cannot be deleted.