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薏米乳酸饮料（job’stearsseedlacticacidbeverage）
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考题
Which of the following tasks is not performed by the job coordinator?()
A. Update job log when a job completesB. Spawn and remove job slavesC. Write/read job info to/from memory cacheD. Query job tableE. Pass job information to job slaves
考题
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，Job2B．Job1，Job3，Job4，Job2C．Job4，Job3，Job2，Job1D．Job4，Job1，Job2，Job3
考题
Which of the following tasks is not performed by the job coordinator?（）A、Update job log when a job completesB、Spawn and remove job slavesC、Write/read job info to/from memory cacheD、Query job tableE、Pass job information to job slaves
考题
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 belongsB、Increasing the job's relative priority within the Job class to which it belongsC、Increasing the resource allocation for the consumer group mapped to the scheduler job's job class within the plan mapped to the scheduler windowD、Moving the job to an existing higher priority scheduler window with the same schedule and durationE、Increasing the value of the JOB_QUEUE_PROCESSES parameterF、Increasing the priority of the scheduler window to which the job belongs
考题
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;
考题
单选题湿气重喝什么粥？（）A
薏米、赤小豆、茯苓、山药、锁阳、莲子B
薏米、赤小豆、茯苓、鹿茸、芡实、莲子C
薏米、赤小豆、茯苓、山药、芡实、莲子D
薏米、赤小豆、土茯苓、山药、芡实、莲子
考题
单选题Which of the following tasks is not performed by the job coordinator？（）A
Update job log when a job completesB
Spawn and remove job slavesC
Write/read job info to/from memory cacheD
Query job tableE
Pass job information to job slaves
考题
单选题Which of the following tasks is not performed by the job coordinator?（）A
Update job log when a job completesB
Spawn and remove job slavesC
Write/read job info to/from memory cacheD
Query job tableE
Pass job information to job slaves
考题
多选题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?（）AIncreasing the priority of the job class to which the job belongsBIncreasing the job's relative priority within the Job class to which it belongsCIncreasing the resource allocation for the consumer group mapped to the scheduler job's job class within the plan mapped to the scheduler windowDMoving the job to an existing higher priority scheduler window with the same schedule and durationEIncreasing the value of the JOB_QUEUE_PROCESSES parameterFIncreasing the priority of the scheduler window to which the job belongs
考题
单选题列出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;
考题
名词解释题乳酸饮料
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