Scheduler

Clicking CNAV Tools, Scheduler allows you to do the following:

• View the scheduled tasks currently in use by CNAV

• Report the addition of a new scheduled task

• Manually execute a task scheduled to be run at a later time

Scheduler tasks are usually set and/or modified as needed at CNAV installation.

Warning:  

This is a Programmer Tool.  Using this tool requires a detailed understanding of programming concepts and procedures that may include Unix, ColdFusion, database structures, SQL, and various CNAV internal processing techniques. We strongly advise that you do not use this tool without first consulting a CNAV Systems, Inc. support engineer.

Viewing scheduled tasks currently in use by CNAV

The main Scheduler screen displays a list of all scheduled tasks currently logged within CNAV.  For each task, this screen provides the following information:

• Task name: This column lists the name of each scheduled task. To edit the task, click the provided Edit icon.

• URL: This column indicates whether each task is accessed as an HTTP process request (URL).

• Cron: This column indicates whether each task is executed as part of the CRON tab job.

• Duration: This column reports the start and end dates for execution of each scheduled task. If no end date was entered when a task was defined, the end date is listed as "Indefinitely".

• Time: This column reports the time of day at which each task is scheduled to run.

• Action: This column provides a link to Run Now. Click Run Now to manually push a specific job before its next scheduled execution.

After viewing the scheduled job information, you can also opt to refresh all tasks in the ColdFusion (CF) registry or send the CRON records to the system administrator by clicking the appropriate GO icon.

Reporting a new scheduled task

When you add a new task to the scheduler, you must also add that task to the CRON tab file. The scheduler simply lists the reported scheduled jobs; it does not modify the system CRON jobs.

To report the addition of a new task, enter the name of the new task in the input field at the top of the Scheduler screen and click Add New Task.  Define the task, as required.

Manually executing a scheduled task

The Action column on the Scheduler main screen provides a link to Run Now. Click Run Now to manually push a specific job before its next scheduled execution.  

Warning:  

Jobs that are scheduled to run at very late or odd times are often scheduled for those times to prevent undo stress on the system.  Other jobs are scheduled for off-peak times because parts of CNAV system functionality are taken off-line during job execution. For these reasons, use extreme caution when pushing jobs via Run Now during peak CNAV usage hours.