How to use jobs in Oracle?

1 year ago
Noah Thompson
2 minutes

In Oracle database, a Job is an automatic task that can be scheduled to perform certain operations or tasks at specified intervals or specific times. Jobs can be used to carry out tasks such as backup, data cleaning, data extraction, and transformation.

Jobs in Oracle can be created and managed using either the DBMS_SCHEDULER or DBMS_JOB package. The DBMS_SCHEDULER package allows for the creation and scheduling of complex jobs, as well as offering advanced features like parallel execution, dependencies, and resource management. On the other hand, the DBMS_JOB package is used for creating and scheduling simpler jobs with fewer features.

Here are some common usages of creating and managing jobs using the DBMS_SCHEDULER package:

  1. Create Job: You can use the CREATE_JOB procedure to create a job and specify certain attributes such as job type, execution time, repeat interval, etc.
  2. Modify job: You can use the SET_ATTRIBUTE procedure to change the properties of a job, such as execution time and interval.
  3. Start Job: You can use the ENABLE procedure to start a job and begin its execution.
  4. Stop Job: You can use the DISABLE procedure to halt the execution of a job.
  5. Remove Job: You can utilize the DROP_JOB procedure to delete a job.
  6. Monitor Job: You can use the VIEW operation to check the status of job execution and view execution history and other information.

In addition to the DBMS_SCHEDULER package, you can also use the DBMS_JOB package to create and manage Jobs. When using the DBMS_JOB package, you can use the following procedures:

  1. Create a job: You can use the SUBMIT procedure to create a job and specify its PL/SQL code and repetition interval for execution.
  2. Modify Job: You can use the CHANGE process to adjust the job’s execution interval, PL/SQL code, and more.
  3. Start Job: You can kick off a job using the RUN procedure to begin its execution.
  4. Stop Job: You can use the BROKEN procedure to halt the execution of a job.
  5. Remove Job: You can use the REMOVE function to delete a job.

In general, Jobs in Oracle provide a mechanism for automatically executing tasks, allowing for the creation, scheduling, monitoring, and management of jobs as needed, thus enabling the automation of database management and task scheduling.

bannerAds