Update a plan directive

You can call the UPDATE_PLAN_DIRECTIVE subprogram in the DBMS_RESOURCE_MANAGER package to update a plan directive based on business needs. You can update the resource management plan, bound resource group, comments on the plan directive, and limit on the CPU resources available for the resource group.

Prerequisites

You have created a new resource management plan or resource group if you want to change the original resource management plan or resource group. For more information, see Configure user-level resource isolation.

Procedure

1. Log on to a MySQL tenant of the cluster as the administrator of the tenant.

2. Call the UPDATE_PLAN_DIRECTIVE subprogram in the DBMS_RESOURCE_MANAGER package to update the plan directive

   obclient [test]> CALL DBMS_RESOURCE_MANAGER.UPDATE_PLAN_DIRECTIVE(
   PLAN => 'daytime',
   GROUP_OR_SUBPLAN => 'interactive_group' ,
   NEW_COMMENT => 'new',
   NEW_MGMT_P1 => 40,
   NEW_UTILIZATION_LIMIT => 60);
   NEW_MIN_IOPS => 40,
   NEW_MAX_IOPS => 80,
   NEW_WEIGHT_IOPS => 70);
   

   Parameters:

   • PLAN: the name of the new resource management plan.

   • GROUP_OR_SUBPLAN: the name of the new resource group.

   • NEW_COMMENT: the new comments on the plan directive.

   • NEW_MGMT_P1: the new percentage of CPU resources available for the resource group when the system runs at full load.

   • NEW_UTILIZATION_LIMIT: the new upper limit on the CPU resources available for the resource group.

   • NEW_MIN_IOPS: the new IOPS resources reserved for the resource group in the case of I/O resource contention. The sum of NEW_MIN_IOPS values of all resource groups cannot exceed 100.

   • NEW_MAX_IOPS: the new maximum IOPS resources available for the resource group. The sum of NEW_MAX_IOPS values of all resource groups can exceed 100.

   • NEW_WEIGHT_IOPS: the new weight for IOPS resources. The sum of NEW_WEIGHT_IOPS values of all resource groups can exceed 100.

3. Query the oceanbase.DBA_RSRC_PLAN_DIRECTIVES or oceanbase.DBA_OB_RSRC_IO_DIRECTIVES view to verify whether the resource management directive is updated.

   obclient [test]> SELECT PLAN, GROUP_OR_SUBPLAN, MGMT_P1, UTILIZATION_LIMIT FROM oceanbase.DBA_RSRC_PLAN_DIRECTIVES;
   +---------+-------------------+---------+-------------------+
   | PLAN    | GROUP_OR_SUBPLAN  | MGMT_P1 | UTILIZATION_LIMIT |
   +---------+-------------------+---------+-------------------+
   | DAY     | group1            |      80 |               100 |
   | daytime | batch_group       |     100 |                40 |
   | daytime | interactive_group |     100 |                60 |
   +---------+-------------------+---------+-------------------+
   3 rows in set
   
   obclient [test]> SELECT * FROM oceanbase.DBA_OB_RSRC_IO_DIRECTIVES;
   

   For more information about the oceanbase.DBA_RSRC_PLAN_DIRECTIVES view, see oceanbase.DBA_RSRC_PLAN_DIRECTIVES.

   For more information about the oceanbase.DBA_OB_RSRC_IO_DIRECTIVES view, see oceanbase.DBA_OB_RSRC_IO_DIRECTIVES.

More information

UPDATE_PLAN_DIRECTIVE