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  • OCP-1Z0-053-V13.02-216题

    216.Which three elements can a job chain process involve? (Choose three)

    A. an event

    B. a schedule

    C. a program

    D. another chain

    E. a lightweight job

    Answer: BDE

    答案解析:

    参考:http://docs.oracle.com/cd/E11882_01/server.112/e25494/scheduse.htm#ADMIN12458


    Defining Chain Steps

    After creating a chain object, you define one or more chain steps. Each step can point to one of the following:

    • A Scheduler program object (program)--包含 lightweight job

    • Another chain (a nested chain)

    • An event schedule, inline event, or file watcher


      The following PL/SQL block creates a lightweight job. Lightweight jobs must reference a program, and the program type must be 'PLSQL_BLOCK' or 'STORED_PROCEDURE'. In addition, the program must be already enabled when you create the job.

      BEGIN
        DBMS_SCHEDULER.CREATE_JOB (
         job_name         =>  'my_lightweight_job1',
         program_name     =>  'polling_prog_n2',
         repeat_interval  =>  'FREQ=SECONDLY;INTERVAL=10',
         end_date         =>  '30-APR-09 04.00.00 AM Australia/Sydney',
         job_style        => 'LIGHTWEIGHT',
         comments         => 'Job that polls device n2 every 10 seconds');
      END;
      /


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  • 原文地址:https://www.cnblogs.com/hzcya1995/p/13316308.html
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