薏苡（job’stears、adlay）

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第1题：

Which of the following tasks is not performed by the job coordinator?()

A. Update job log when a job completes

B. Spawn and remove job slaves

C. Write/read job info to/from memory cache

D. Query job table

E. Pass job information to job slaves

参考答案：A

第2题：

The user SYS creates a job by using the following command:Which two statements are true about the job that was created by the preceding command? ()(Choose two.)

A. The job is enabled by default after creation

B. The job is automatically dropped after the end date

C. The job executes with the privileges of the user SYS

D. The globalization environment that exists at the time of the job creation prevails at the job runs

参考答案：B, C

第3题：

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（20）设有一组作业，它们的作业提交时刻及估计运行时间如下所示：

作业号提交时刻估计运行时间（分钟）

Job1 8：30 70

Job2 9：10 30

Job3 9：30 15

Job4 9：50 5

在单道批处理方式下，采用短作业优先调度算法，作业的执行顺序为;

A）Job1，Job4，Job3，Job2

B）Job1，Job3，Job4，Job2

C）Job4，Job3，Job2，Job1

D）Job4，Job1，Job2，Job3

正确答案：B

（20）【答案】B)
【解析】短作业优先调度算法即始终使最短的进程最先得到调度。在8：30时刻，只有作业一提交，运行作业一；当运行到9：10时刻，作业一还需30分钟运行时间，此时作业二提交，但因为作业二的估计运行时间为30分钟，所以继续运行作业一，当运行到9：40分时，作业地运行完毕，此时作业二和三都等待调度，由于作业三的估计运行时间比作业二短，则先运行作业三。依此类推。可得出答案。

第4题：

While creating a job class using the DBMS_SCHEDULER package， you set the logging level to LOGGING_RUNS. What would be the impact of this setting？（）

A、 Oracle Scheduler would write detailed information to the job log for each run of each job in the job class.
B、 Oracle Scheduler would write detailed information to the job log for the first run of each job in the job class.
C、 Oracle Scheduler would write detailed information to the job log for each run of only the first job in the job class.
D、 Oracle Scheduler would write detailed information for all operations performed on all jobs in the job class.

正确答案:A

第5题：

设有一组作业，它们的作业提交时刻及估计运行时间如下所示：作业号提交时刻估计运行时间(分钟) Job1 8：30 70 Job2 9：10 30 Job3 9：30 15 Job4 9：50 5 在单道批处理方式下，采用短作业优先调度算法，作业的执行顺序为

A．Job1，Job4，Job3，Job2

B．Job1，Job3，Job4，Job2

C．Job4，Job3，Job2，Job1

D．Job4，Job1，Job2，Job3

正确答案：B
解析：本题考查短作业优先调度算法的概念。短作业(进程)优先调度算法是指对短作业或短进程优先调度的算法。它们可以分别用于作业调度和进程调度。短作业优先调度算法，是从后备队列中选择一个或若干个估计运行时间最短的作业，将它们调入内存运行。而短进程优先调度算法，则是从就绪队列中选出一估计运行时间最短的进程，将处理机分配给它，使它立即执行并一直执行到完成，或发生某事件而被阻塞放弃处理机时，再重新调度。进程首先执行的是Job1，该作业到9:40完成，此时Job2和Job3在等待队列中，按照短作业调度算法，此时执行Job3。Job3在10:10，此时等待队列中有Job2和Job4作业，此时执行Job4，最后执行Job2。正确答案为选项B。

第6题：

When setting arguments for a job, which procedure do you use for types that cannot be implicitly converted to and from a VARCHAR2 datatype?()

A. SET_JOB_ARGUMENT_VALUE

B. SET_JOB_VALUE_ANYDATA

C. SET_JOB_ANYDATA_VALUE

D. SET_SPECIAL_JOB_VALUE

E. SET_JOB_ANYTYPE_VALUE

参考答案：C

第7题：

You notice that the elapsed time for an important database scheduler Job is unacceptably long.The job belongs to a scheduler job class and window.Which two actions would reduce the job‘s elapsed time?（）

A. Increasing the priority of the job class to which the job belongs

B. Increasing the job‘s relative priority within the Job class to which it belongs

C. Increasing the resource allocation for the consumer group mapped to the scheduler job‘s job class within the plan mapped to the scheduler window

D. Moving the job to an existing higher priority scheduler window with the same schedule and duration

E. Increasing the value of the JOB_QUEUE_PROCESSES parameter

F. Increasing the priority of the scheduler window to which the job belongs

参考答案：B, C

第8题：

The user SYS creates a job by using the following command:Which two statements are true about the job that was created by the preceding command?()

A. The job is enabled by default after creation

B. The job is automatically dropped after the end date

C. The job executes with the privileges of the user SYS

参考答案：B, C

第9题：

列出EMP表中,从事每个工种(JOB)的员工人数()

A.select job from emp;

B.select job,count(*) from emp;

C.select distinct job,count(*) from emp;

D.select job,count(*) from emp group by job;

E.select job,sum(empno) from emp group by job;

参考答案：D

第10题：

Using the Tivoli Dynamic Workload Console， what are two ways to change the priority of a job？（）

A、 Open the "Set Priority" panel from the job properties.
B、 Change the priority of the job stream that contains the job.
C、 Select the corresponding action from the Monitor jobs task panel.
D、 Open the job stream properties and drill down to the job priority panel.
E、 The priority of a job can only be changed from the Workload Designer.

正确答案:A,C

薏苡（job’stears、adlay）

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