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 whi

第1题：

You want to purge job entries older than 5 days from the job log. You do not want to purge window log entries. Which command will you use to accomplish this task？（）  

• A、 EXECUTE DBMS_SCHEDULER.PURGE_LOG（log_history => 5， job_name => ’JOB1’）；
• B、 EXECUTE DBMS_SCHEDULER.PURGE_LOG（ log_history => 5， job_name => ’JOB_LOG’）；
• C、 EXECUTE DBMS_SCHEDULER.PURGE_LOG（ log_history => 5， which_log => ’JOB1’）；
• D、 EXECUTE DBMS_SCHEDULER.PURGE_LOG（ log_history => 5， which_log =>’JOB_LOG’）；

第2题：

Which view will you use to view information regarding the jobs that are currently running in a database？（）

• A、DBA_SCHEDULER_RUNNING_JOBS
• B、DBA_SCHEDULER_JOB_RUN_DETAILS
• C、DBA_SCHEDULER_JOBS
• D、DBA_SCHEDULER_JOB_LOG

第3题：

You work as a database administrator for Certkiller .com. You want to configure database backups to be run automatically.  Which tool or utility would you use to achieve this？ （）

• A、The DBMS_JOB package
• B、The BACKUP_JOB package
• C、The DBMS_BACKUP_RESTORE package
• D、The calendar tool in the Operating System （OS）
• E、The backup scheduler in Enterprise Manager （EM）
• F、The DBMS_BACKUP_SCHEDULER packager inline mode

第4题：

You are creating a job class. You have issued the following command to create the job class：  SQL> BEGIN   DBMS_SCHEDULER.CREATE_JOB_CLASS（        JOB_CLASS_NAME => ’LOW_PRIORITY_CLASS’，        RESOURCE_CONSUMER_GROUP => ’LOW_GROUP’，        LOGGING_LEVEL => DBMS_SCHEDULER.LOGGING_FULL，        LOG_HISTORY => 1200，   COMMENTS => ’LOW JOB PRIORITY CLASS’）；        END；        SQL> /   What will be the result of the above command？（）

• A、 The command will be executed successfully.
• B、 The command will fail because RESOURCE_CONSUMER_GROUP is an invalid parameter in the  DBMS_SCHEDULER.CREATE_JOB_CLASS procedure.
• C、 The command will fail because LOGGING_LEVEL is an invalid parameter in the DBMS_SCHEDULER.CREATE_JOB_CLASS procedure.
• D、 The command will fail because LOG_HISTORY is an invalid parameter in the DBMS_SCHEDULER.CREATE_JOB_CLASS procedure.
• E、 The command will fail because 1200 is an invalid value for the LOG_HISTORY parameter in the  DBMS_SCHEDULER.CREATE_JOB_CLASS procedure.

第5题：

Which two statements are true about a job chain？（）

• A、 A job chain can contain a nested chain of jobs
• B、 The jobs in a job chain cannot have more than one dependency
• C、 A job of the CHAIN type can be run using event-based or time-based schedules
• D、 The jobs in a job chain can be executed only by using the events generated by the Scheduler

第6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

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第13题：

Consider the following code snippet：   BEGIN  DBMS_SCHEDULER.SET_ATTRIBUTE （ name => ，，lne_job1， attribute => ，，job_priority， value => 1）；  END；  /   If this code were executed， which of the following statements would be true？（）

• A、 The priority of the lne_job1 job would be set to 1.
• B、 The lne_job1 job would be executed synchronously.
• C、 The lne_job1 job would run immediately in the users current session.
• D、 The lne_job1 job would retain its current priority.
• E、 The job will immediately take priority over all running jobs.

第14题：

Which two statements are true about a job chain?（）

• A、A job chain can contain a nested chain of jobs.
• B、The jobs in a job chain cannot have more than one dependency.
• C、A job of the CHAIN type can be run using event-based or time-based schedules.
• D、The jobs in a job chain can be executed only by using the events generated by the Scheduler

第15题：

Which two statements are true about a job chain? （）(Choose two.)

• A、A job chain can contain a nested chain of jobs.
• B、The jobs in a job chain cannot have more than one dependency.
• C、A job of the CHAIN type can be run using event-based or time-based schedules.
• D、The jobs in a job chain can be executed only by using the events generated by the Scheduler

第16题：

You have created a job class， CUST_JOB_1， with two jobs， CUST_JOB_1_A and CUST_JOB_1_B. Which two statements are true？ （）

• A、 The member jobs would get dropped when the job class is dropped.
• B、 Both the jobs would be executed concurrently.
• C、 The member jobs would get disabled when the job class is dropped.
• D、 The attributes defined at the class level would be applied to both the jobs.
• E、 Jobs in the job class must have been assigned the same priority.

第17题：

You want to view the name of a program associated with a job for making some changes to the program. Which view will you query to find the name of the program associated with the job？（）

• A、 DBA_SCHEDULER_JOB_RUN_DETAILS
• B、 DBA_SCHEDULER_RUNNING_JOBS
• C、 DBA_SCHEDULER_JOBS
• D、 DBA_SCHEDULER_JOB_LOG

第18题：

William is creating a job class. William specifies the LOGGING_FULL setting for the LOGGING_LEVEL attribute at the time of job class creation. What is the impact of using this setting？（）  

• A、 Detailed information regarding the first run of each job in the class will be written in the job log， and every operation performed on the job class will be logged.
• B、 Detailed information regarding each run of only the first job in the class will be written in the job log， and every operation performed on the job class will be logged.
• C、 Detailed information regarding each run of each job in the class will be written in the job log， and every operation  performed on the job class will be logged.
• D、 Detailed information regarding each run of each job in the class will be written in the job log， but operations performed on the job class will not be logged.

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