Oracle EBS Job Scheduler: Integrations to Optimize ERP Task Management

In Oracle E-Business Suite (EBS), the DBMS_SCHEDULER package is a powerful feature of the Oracle database used by the EBS Job Scheduler (Concurrent Manager) to schedule and manage various tasks within the EBS system. The DBMS_SCHEDULER package provides a programmatic interface to interact with the Oracle Scheduler to run jobs.

DBMS_SCHEDULER allows users to create jobs and define the job type (PL/SQL block, stored procedure, or executable script). Job attributes include job name, start time, end time, repeat interval, and other parameters.

Monitor job status and progress with the DBMS_SCHEDULER package. Functions include the ability to query job information, view job logs and output, and manage job states: enable, disable, stop, run jobs, or drop jobs. The DBMS_SCHEDULER also allows users to define dependencies between jobs.

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The Oracle EBS Job Scheduler allows users to define schedules for concurrent programs based parameters like start time and end time, frequency, and dependencies. Schedules can be recurring, one-time, or based on specific events or other triggers.

After a concurrent program is scheduled, the job scheduler manages job execution by assigning resources and avoiding system conflicts. Job status and progress of the concurrent programs can be monitored by viewing schema logs and output files.

Troubleshooting checks can be performed when job scheduling issues arise with the Oracle EBS Job Scheduler. These checks include reviewing dispatcher configuration and evaluating procedures for system restarts.

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To start the Oracle Job Scheduler, use the syntax in the following example in SQL:

BEGIN
     DBMS_SCHEDULER.START_SCHEDULER;
END;
/

This PL/SQL block calls the START_SCHEDULER procedure from the DBMS_SCHEDULER package to initiate the Oracle Job Scheduler. By executing this SQL server code, the scheduler will be activated and start processing scheduled jobs according to predefined schedules.

To start the scheduler, users will need necessary privileges, like the DBA role or MANAGE SCHEDULER system privilege. For optimal configuring, a connection to the appropriate Oracle database will be needed.

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The following example creates a scheduler job in Oracle:

1. Connect to the Oracle database with appropriate privileges (DBA role or CREATE JOB).
2. Identify the PL/SQL block, stored procedure, or executable script that will be part of the job execution.

3. Use DBMS_SCHEDULER.CREATE_JOB to create a job. The syntax for creating a basic job can be seen in the following example using SQL:

   BEGIN
     DBMS_SCHEDULER.CREATE_JOB (
       job_name        => 'JOB_NAME',
       job_type        => 'PLSQL_BLOCK', -- or 'STORED_PROCEDURE' or 'EXECUTABLE'
       job_action      => 'PLSQL_BLOCK_STATEMENT', -- or stored procedure name or executable script name
       start_date      => SYSTIMESTAMP, -- or specify a specific start date and time
       repeat_interval => 'FREQ=HOURLY; INTERVAL=1', -- specify the desired repeat interval
       enabled         => TRUE -- set to TRUE to enable the job immediately
     );
   END;
   /
   

   JOB_NAME should be replaced with the job name, PLSQL_BLOCK_STATEMENT with the PL/SQL code or stored procedure name, and adjust other parameters as needed. The start_date and repeat_interval parameters determine the scheduling of the job.

4. The job can be customized by setting additional attributes using the SET_ATTRIBUTE procedure from the DBMS_SCHEDULER package. Job properties like logging levels, error handling, restarts, and notifications can be modified.
5. Save and execute the PL/SQL block to create the job.
6. Verify job creation by querying ALL_SCHEDULER_JOBS or DBA_SCHEDULER_JOBS. Jobs can be searched using JOB_NAME or other job definitions.

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