The GC Explorer
Official document: Administrator ' s guide->24 Using the Database Resource Manager
Usage: Less used in the actual production environment
Role: Limit the use of database resources, CPU memory Undo Table Space IO session
Occasions: When there are multiple apps using a database and resource constraints can be adjusted with "explorer"
Implementation: can be completed with GC or by EM, and the package is also available to complete
UI way: Simple, fast, not error prone
Commend mode: Complex setup, long command, high failure rate, DBMS_RESOURCE_MANAGER_PRIVS packet processing
Requirements:
1. Define 2 resource consumption groups (OLTP transaction resource consumption Group and DSS data Warehouse resource consumption group)
2. Create a Schedule plan schedule
3. For OLTP resource consumption groups, we cannot have more than 50 active sessions, and if you exceed 50 active sessions then you should abort 120 seconds before requesting
4. For DSS resource consumption group, we can not exceed the number of 10 active sessions, if more than 10 active sessions, then we should abort 300 seconds before requesting
5. Set up an OLTP DSS other_groups 3 Group CPU hit rates of 50% 30% 20% respectively
6.DSS resource consumption group with a maximum degree of parallelism of 20
7. The time to query a DML statement for an OLTP session cannot exceed 100 seconds
8. Specify the instance default schedule "schedule Schedule" activation
Experiment
Declaration: OLTP Transaction Resource Consumption Group
DSS Data Warehouse resource consumption group
Other_groups Other resource consumption groups
Different resource consumption Group Policies
Login GC input Sysman password oracle1216
Ocm01->administration->consumer group-> input sys password SYS login
CREATE->OLTP resource Consumption Group, click Add OCM01 User will check box selected, click OK
CREATE->DSS resource Consumption Group, click Add ocm0102 User will check box selected, click OK
Database instance:ocmdb > Object type:resource plan->create-> a plan name Schedule_plan
Click Modify to add Consumer Groups (OLTP and DSS)
Leo1->administration->plans Creating a Schedule plan
Session Pool 10 300
50 120
In the General option, level 30 50 20
Setting DSS parallelism in the parallelism option 20
Setting the "Max Idle time" setting in the "idle" option limits the OLTP session to query a DML statement for no more than 100 seconds
General, select "Activate this plan", apply activation can, click OK to create the complete
Summary of self-OCM experiment selection and talk
"Log in GC"
"Click Targets"
"Click Databases->ocmdb"
"Click Administration->resource manager->consumer Groups"
"Input sys username and password"
"Click Create to add a resource user group"
"Add DSS, and OLTP resource user groups"
"Add users to a resource user group"
"Click on select after Tick"
"Click OK"
"Click Resource Manager->plans Add Plan"
"Click Create to add a schedule"
"Add Schedule"
--==
No
Plan:schedule_plan
Description:schedule_plan
A second option tick
--==
Select a resource user group for the schedule
"Set up OLTP DSS other_groups 3-group CPU hit rate 50% 30% 20%, respectively"
"Click Edit"
"Maximum degree of parallelism for DSS resource consumption group is 20"
"The time to query a DML statement for an OLTP session cannot exceed 100 seconds"
"Click General->activate this Plan activation program"
"Click Apply"
Complete
