How to create oracle database scheduled tasks

How to create scheduled tasks in Oracle database: DBMS_SCHEDULER package: create jobs and programs, associate programs with jobs, and schedule jobs. Job Scheduler: Create and manage scheduled tasks using a graphical interface. DBMS_JOB package: Create a job, specify the program to run, and schedule the job.

How to create an Oracle database scheduled task

Oracle database provides a variety of methods to create scheduled tasks, including DBMS_SCHEDULER package, job scheduler, and dbms_job package.

DBMS_SCHEDULER package

The DBMS_SCHEDULER package provides a program interface for creating scheduled schedules. To create a cron job using this package, follow these steps:

1. Create a job:

<code class="sql">BEGIN
  DBMS_SCHEDULER.CREATE_JOB(job_name => 'my_job', job_type => 'SCHEDULED_JOB');
END;
/</code>

2. Create a program:

<code class="sql">CREATE OR REPLACE PROCEDURE my_procedure AS
BEGIN
  -- 你的代码
END;
/</code>

3. Associate a program with a job:

<code class="sql">BEGIN
  DBMS_SCHEDULER.SET_JOB_ACTION(job_name => 'my_job', subprogram_name => 'my_procedure');
END;
/</code>

4. Schedule a job:

<code class="sql">BEGIN
  DBMS_SCHEDULER.SCHEDULE_JOB(job_name => 'my_job', next_date => to_date('2023-03-08', 'yyyy-mm-dd'), repeat_interval => 'FREQ=DAILY');
END;
/</code>

Job Scheduler

Job Scheduler is a graphical user interface (GUI) tool that can be used to create and manage scheduled tasks. To create a cron job using the job scheduler, follow these steps:

1. Open the job scheduler (for Windows) or run dbmsched (for UNIX).
2. Click the "New" button.
3. Enter job name and description.
4. Select the "Job" type from the "Stages" tab.
5. In the "Program" tab, specify the program to run.
6. In the "Schedule" tab, schedule the job.

DBMS_JOB package

The DBMS_JOB package provides another program interface for creating scheduled schedules. To create a cron job using this package, follow these steps:

1. Create a job:

<code class="sql">BEGIN
  DBMS_JOB.SUBMIT(job => my_job, next_date => to_date('2023-03-08', 'yyyy-mm-dd'), interval => 'FREQ=DAILY', what => 'my_procedure');
END;
/</code>

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