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

<上一题目录下一题>

热门试题

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.

单项选择题Your database is running in the automatic Program Global Area （PGA） memory management and Shared Memory Management mode. You want to increase the memory available for the SQL work areas. What would you do？（）

A.modify the HASH_AREA_SIZE initialization parameter
B.modify the PGA_AGGREGATE_TARGET initialization parameter
C.modify the WORK_AREASIZE_POLICY initialization parameter
D.increase the value of the SGA_TARGET initialization parameter
E.increase the value of the SGA_MAX_SIZE initialization parameter
F.increase the value of the SORT_AREA_SIZE initialization parameter

多项选择题You are working in a dedicated server environment. Your database is running in the automatic Program Global Area （PGA） memory management mode. Which two statements are correct in this scenario？（）

A.The WORK_AREASIZE_POLICY initialization parameter cannot be set to AUTO.
B.The Oracle database automatically controls the amount of PGA memory allotted to SQL work areas.
C.Setting the value of the SGA_TARGET initialization parameter to 0 will disable the automatic PGA memory management.
D.The SORT_AREA_SIZE parameter is ignored by all the sessions running in the automatic PGA memory management mode.

单项选择题Yourdatabaseisusingsharedserverconfiguration.WhichoptionalmemorystructurewouldyouconfiguretostoretheUserGlobalArea（UGA）informationandimprovethesharedpoolperformance？（）

A.large pool
B.streams pool
C.keep buffer cache
D.recycle buffer cache

单项选择题In your running instance， some of the initialization parameters are set as shown below： SGA_MAX_SIZE = 14GB DB_CACHE_SIZE = 1GB SHARED_POOL_SIZE = 3GB STATISTICS_LEVEL = BASIC PGA_AGGREGATE_TARGET = 0 You plan to enable Automatic Shared Memory Management but you are not able to set SGA_TARGET to a nonzero value. What could be the reason？（）

A.The STATISTICS_LEVEL initialization parameter is set to BASIC
B.The PGA_AGGREGATE_TARGET initialization parameter is set to zero.
C.The SGA_MAX_SIZE initialization parameter is set to less than 20 GB
D.The DB_CACHE_SIZE initialization parameter is set to less than 5 GB
E.The SHARED_POOL_SIZE initialization parameter is set to a nonzero value.