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

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.