Adjust and Verify Background Job for Due Calculations for Interval Based Maintenance

Explanation

This activity is used to view the calculated due dates for interval based maintenance. At installation, the server process for the calculation of due dates for interval based maintenance is set (by default) to execute daily at 12:00 midnight through a background job. If you have the required permissions, you can adjust the execution time of the background job. For more information on background jobs, refer the activity Using Background Jobs. You can also choose to manually run the due date calculation for a selected serial by using the Perform Due Calculations functionality.

It is recommended to divide the background job into several chunks and run these chunks in parallel instead of running the background job for each serial in sequence. This has a great effect on the performance when a large number of serials are to be calculated. The object properties CHUNK_SIZE and CHUNKS_IN_PARALLEL can be used to set up the number of serials to process at once, and how many chunks to process in parallel. For more information on the object properties, refer the activity Verify or Adjust Default Object Properties.

Note: The background job for the historical average value for operational events should be completed before the due calculations for interval based maintenance is run. It would be correct to define these jobs in sequence, or at least verify the setup before changing any of them. For more information, refer the activity Define Background Job for the Calculation of Historical Average Values for Operational Events. 

Prerequisites

• Maintenance plans must exist. 
• Be precise when registering start values for a serial in Component Life, since these values are used for result calculations, such as the due date calculation of interval maintenance.

System Effects

• Maintenance events are created.
• Due dates for specific maintenance codes are generated.

Window

Serial Maintenance

Related Window Descriptions

Serial Maintenance/Interval Maint.
Maintenance Plan/Intervals 
Component Life

Procedure

Follow this procedure to view the due dates for the interval based maintenance:

1. Open the Serial Maintenance window and query (F3) for your serial.
2. Click the Interval Maint. tab.
3. The calculated due dates for interval based maintenance is displayed in the Due Date field.
4. To perform a manual calculation, right-click anywhere in the header of the Serial Maintenance window, and then click Perform Due Calculation. Select the relevant calculation option(s) in the dialog box and click OK.