诗人：写诗A．出书：作家B．教师：教书C．运动员：受伤D．安心：看书

A.When using versions of Java technology earlier than 5.0.

B.When sharing a StringBuffer among multiple threads.

C.When using the java.io class StringBufferInputStream.

D.When you plan to reuse the StringBuffer to build more than one string.

A. It is possible, but transaction T3 also backs out.

B. It is possible with the NOCASCADE_FORCE option.

C. It is possible with the NONCONFLICT_ONLY option.

D. It is not possible because it has conflicts with transaction T3.

A.Value is: 8

B.Compilation fails.

C.Value is: 12

D.Value is: -12

E.The code runs with no output.

F.An exception is thrown at runtime.

A. the SQL text SQL

B. the execution plan

C. the execution context

D. the execution frequency

E. the system change number (SCN)

A.Cat is-a Animal

B.Cat is-a Jumper

C.Dog is-a Animal

D.Dog is-a Jumper

E.Cat has-a Animal

F.Beagle has-a Tail

G.Beagle has-a Jumper

result sets.You configure the sqlnet.ora file in the client machine to set a nonzero value for the OCI_RESULT_CACHE_MAX_SIZE parameter. What is the purpose of this configuration?（）

A. to avoid round trips to the server by enabling caching of query results in client memory

B. to improve performance by storing a copy of the data from the private SQL area of the PGA

C. to enhance the query performance by creating a cache in the client memory for sorting operations

D. to avoid the storing of query plans and results in the server by creating a cache in the client memory

A. It creates a task and workload, and executes the task.

B. It creates a task and workload but does not execute the task.

C. It produces an error because a template has not been created.

D. It produces an error because the SQL Tuning Set has not been created.

A.The output is mm.

B.The output is mc.

C.Component is-a Meter.

D.Component has-a Meter.

E.DeluxeThingy is-a Component.

F.DeluxeThingy has-a Component.

A. Accept the recommended SQL profile.

B.Collect statistics for the related objects.

C. Run the Access Advisor for the SQL statement.

D. Run the Segment Advisor for recommendations.

recommendation is automatically implemented after the SQL Tuning Advisor is run as part of the automatic maintenance task?（）

A. statistics recommendations

B. SQL Profile recommendations

C. Index-related recommendations

D. restructuring of SQL recommendations