题目
A. The optimizer used a dynamic plan for the query.
B. The optimizer chose different plans because automatic dynamic sampling was enabled.
C. The optimizer used re-optimization cardinality feedback for the query.
D. The optimizer chose different plan because extended statistics were created for the columns used.
第2题
23 Which of the following actions is an example of risk response:
A. adjust project parameters (scope, time, quality ...)
B. reduce the probability of potential project risk events C. reduce the consequences of potential project risk events
D. wait until a problem actually happens, then deal with it in the most effective and efficient manner.
E. A, B and C only
第3题
To implement Automatic Management (AMM), you set the following parameters: When you try to start the database instance with these parameter settings, you receive the following error message:SQL > startupORA-00824: cannot set SGA_TARGET or MEMORY_TARGET due to existing internal settings, see alert log for more information.Identify the reason the instance failed to start.()
A.The PGA_AGGREGATE_TARGET parameter is set to zero.
B.The STATISTICS_LEVEL parameter is setto basic.
C.Both the SGA_TARGETandMEMORY_TARGET paramete rsareset.
D.The SGA_MAX_SIZEandSGA_TARGET parameter value sare note qual.
第5题
A.examined
B.to examine
C.examining
D.examine
第7题
A.A.Use a hole instrument to examine the turbine internally
B.B.Use a borescope to examine the combustor internally
C.C.Use a hole instrument to examine the combustor externally
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