多项选择题
In your production database， you observe that users’ transactions are consuming a lot of resources and you plan to impose resource restrictions by using Resource Manager.
For which three resources can you enable usage restrictions by using Resource Manager？（）
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
相关考题
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单项选择题
From the V$SESSION_LONGOPS view， you find that some of the database users have long-running queries that consume a lot of CPU time. This causes performance problems for other users in the database， who have much shorter queries. You would like to make sure that the users with large queries do not use all the CPU time， but you still do not want to terminate them with an error message. Which method would you follow to achieve this？（）
A.set the CPU time per call in the users profile
B.set the CPU time per session in the users profiles
C.set the CPU levels for the users’ group using Resource Manager
D.set the TIMED_STATISTICS parameter to TRUE in the parameter file -
单项选择题
From the V$SESSION_LONGOPS view， you find that some of the database users have long-running queries and are consuming a lot of CPU time. This causes problems for you when you try to log on as the system user and perform small maintenance tasks. You would like to ensure that users SYS and SYSTEM get priority over all other users. Which method would you use to achieve this objective？（）
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 -
单项选择题
SORT_AREASIZEandHASH_AREA_SIZEparametersareignoredinsomeoftheusersessions.Whatcouldbethereason？（）
A.The User Global Area （UGA） is not configured.
B.The sessions were started using the login name SYS.
C.The sessions are running in the Automatic Shared Memory Management mode.
D.The sessions are running in the automatic Program Global Area （PGA） memory management mode.
