Enterprise Manager for Oracle® Jobs

Frequently Asked Questions

• What are jobs in an Oracle job scheduler?

  You can create and manage jobs using the DBMS_SCHEDULER package, which provides various procedures and functions to define, schedule, modify, and monitor jobs within the scheduler.

  The job's characteristics, such as its type and actions, are determined by the job-Type and job_action. A job can execute various tasks, including PL/SQL blocks, stored procedures, chains, external scripts, and programs.

  To assign a name to a job, follow the SQL naming rules specified for Scheduler objects within the DBMS_SCHEDULER package. If you need to create multiple jobs, you can add them to an array and retrieve their JOB_NAME from USER_SCHEDULED_JOBS.

  When specifying the end_date for a job to cease running, the job will be dropped if auto_drop is set to TRUE. Or, if auto_drop is set to FALSE, the job will be disabled, and its STATE will be marked as COMPLETED.

  You can only edit, copy, drop, stop, enable, or disable a job if you’re the sys (user who created the job within their database schema). Other users or select owners cannot perform these actions on jobs that are owned by someone else.

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• What are the essential procedures for job scheduling with Oracle?

  Oracle Job Scheduler offers several key procedures that facilitate job management and scheduling.

  These procedures include:

  • CREATE_JOB for creating new jobs with specified attributes.
  • SET_ATTRIBUTE for modifying existing job properties.
  • DROP_JOB for deleting jobs from the scheduler.
  • ENABLE and DISABLE for controlling the execution status of jobs
  • STOP_JOB for terminating running jobs
  • CREATE_CREDENTIAL for creating credentials associated with jobs
  • CREATE_PROGRAM for defining tasks or actions to be performed by jobs
  • CREATE_JOB_CLASS for organizing jobs based on resource requirements
  • scheduler_job_run_details provides detailed information about the execution history of jobs
  • repeat_interval parameter allows you to repeat a job
  • dbms_scheduler.create_job procedure to define and schedule jobs in the Oracle Scheduler
  • dba_scheduler_jobs provides details about job names, schedules, state, and other relevant job metadata.

  You can enable, disable, or modify jobs using the appropriate procedures like dbms_scheduler.enable, dbms_scheduler.disable, and dbms_scheduler.set_attribute.

  To remove jobs that are no longer needed or have completed their tasks, use the dbms_scheduler.drop_job procedure.

  To access the job log in Oracle Job Scheduler, you can retrieve the log file associated with a particular job.

  You can specify the job name, program name, program type, schedule name, start date, repeat interval, and other parameters to configure the job's execution. Define granular schedules using parameters such as byday, byhour, byminute, and bysecond.

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• Can Oracle Job Scheduler run on a Linux operating system?

  Yes, Oracle Job Scheduler is compatible with Linux operating systems to schedule and manage jobs within your Oracle database environment.

  Read more about Tidal’s Linux-Unix Agent integration.