多项选择题

You execute the following command to create two consume……

You execute the following command to create two consumer groups， FIN_GROUP1 and PAY_GROUP1， for a plan，PROD_PLAN：
BEGIN
DBMS_RESOURCE_MANAGER.CREATE_SIMPLE_PLAN （SIMPLE_PLAN => ’prod_plan’，
CONSUMER_GROUP1 => ’fin_group1’，
GROUP1_CPU => 80，
CONSUMER_GROUP2 => ’pay_group1’，
GROUP2_CPU => 20）;
END;
Which three statements are true？（）

A.SYS_GROUP gets 100% CPU resources at level 1.
B.FIN_GROUP1 gets 80% CPU resources at level 1.
C.FIN_GROUP1 gets 80% CPU resources at level 2.
D.PAY_GROUP1 gets 20% CPU resources at level 1.
E.PAY_GROUP1 gets 20% CPU resources at level 2.
F.OTHER_GROUP gets 100% CPU resources at level 1.
G.OTHER_GROUP gets 100% CPU resources at level 2.

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单项选择题YouareusingResourceManagertomanagesystemresources.Whilecreatinganewdatabaseuser，youobservethattheuserisamemberofDEFAULT_CONSUMER_GROUPbydefault.Whatwouldbetheimplicationsofthis？（）

A.The Resource Manager plan does not affect the user.
B.There must be a plan directive in any of the plans of the group to control the resources.
C.The members of the group DEFAULT_CONSUMER_GROUP always have resource restrictions.
D.The members of DEFAULT_CONSUMER_GROUP are restrained from accessing the system tables.
E.The members of this group can change their group without the database administrator’s intervention.

多项选择题View the Exhibit and examine the Resource Manager settings for the groups at different levels. Which two effects would be the result of this setting？（）

A.The members of LOW_GROUP would get more priority than those of OTHER_GROUPS.
B.The members of SYS_GROUP would get most of the CPU allocation at level 1.
C.The members of LOW_GROUP would get most of the CPU allocation because it has CPU allocation at two different levels.
D.The members of LOW_GROUP would get no CPU allocation at level 1 if the members of OTHER_GROUPS are using all the CPU at level 2.
E.The members of SYS_GROUP would get no CPU allocation at level 1 if the members of OTHER_GROUPS are using all the CPU at level 2.

多项选择题Inyourproductiondatabase，youobservethatusers’transactionsareconsumingalotofresourcesandyouplantoimposeresourcerestrictionsbyusingResourceManager.ForwhichthreeresourcescanyouenableusagerestrictionsbyusingResourceManager？（）

A.CPU usage
B.degree of parallelism
C.number of open cursors
D.number of sorts performed
E.idle time for blocking sessions
F.number of disk I/O operations performed
G.number of memory I/O operations performed

单项选择题From the V$SESSION_LONGOPS view， you find that some of the database users have longrunning queries that consume a lot of CPU time. This causes performance problems for other users in the database， who have much shorter queries. You would like to make sure that the users with large queries do not use all the CPU time， but you still do not want to terminate them with an error message. Which method would you follow to achieve this？（）

A.set the CPU time per call in the users profile
B.set the CPU time per session in the users profiles
C.set the CPU levels for the users’ group using Resource Manager
D.set the TIMED_STATISTICS parameter to TRUE in the parameter file

单项选择题FromtheV$SESSION_LONGOPSview，youfindthatsomeofthedatabaseusershavelongrunningqueriesandareconsumingalotofCPUtime.Thiscausesproblemsforyouwhenyoutrytologonasthesystemuserandperformsmallmaintenancetasks.YouwouldliketoensurethatusersSYSandSYSTEMgetpriorityoverallotherusers.Whichmethodwouldyouusetoachievethisobjective？（）

A.create a plan directive in the SYS_GROUP
B.create the pending area for the consumer group
C.activate the provided SYSTEM_PLAN in Resource Manager
D.set the TIMED_STATISTICS parameter to TRUE in the parameter file
E.set the execution time limit for all users， except SYS and SYSTEM， in their profiles