This transaction contains all check and monitoring functions for the application installation. At a particular point in time (checkpoint) which is either scheduled automatically or triggered interactively, the Watchdog will execute a set of check rules from a given list of different check rules (topics).

The following predefined checkpoints are available:

• Periodic is executed, for example, every 30 minutes (600 seconds) 
  Who should be Notified if any errors found ? 
• Morning at start of day 
  Evening typically used to monitor the daily closing of transactions not yet processed and pending messages
  
  
  It is possible to program and run additional check rules for specific customers. All checkpoint results are generated in a consolidated document. Using the buttons on the first panel, it is possible to generate and immediately display the documents (also for individual check rules).

There are three different view types for each check rule:

• Counter (just one text line, that, where appropriate, contains Return Value and Threshold, or, for example, the text lines: 'All managers running' or 'No erroneous WFE'.)
• List (short display, typically the list of errors)
• Details (detailed display)

'Skip' means that the check rule is not run for this particular checkpoint.

A maximum return value (threshold) can be defined for each check rule defined as 'Periodic' (also 0). If this threshold is exceeded, it will be interpreted as an 'Error'. Such an error status triggers the following actions.

• Initially the error is posted as a procedure. The name of the procedure is composed of the name of the manager, service or report. If this is available, the procedure can then check other secondary conditions and, where applicable, can reset the error status. This then avoids having error messages for services that never run at certain times.
• A notify message is sent to the application administrator(s)
• A "Check Watchdog" Notifier is shown in the office menu.

Starting the Manager, if not available

At each periodic check, the Watchdog checks whether all the managers required are up and running. If a manager is, or several managers are, missing, the Watchdog carries out the following actions for the manager:

If the "Restart Managers automatically" switch is enabled;

• If the 'old' manager process is still available, this is removed with a kill command
• The manager is re-started

The list of required managers is based on the configured list of managers as visible in the background manager controlling transaction (SYSMGR) .

Control of the interactive and background process window

These switches allow you to release and block the whole system at specified times. This allows you to enter different times for interactive foreground and background processes.

Operating times

Starting the system (interactive users)
- System is available for login

Starting the system (background processes)
- Managers will be started

Stopping the systems (interactive users):
- First of all the system is blocked so that no other users can be logged in.
- Afterwards, all interactive process that are still running will be closed.

Stopping the system (background processes)
- The managers will be shut down. In addition, a time can be entered when a Notify message is sent to the interactive users indicating that the system will be shut down in x minutes.

All times apply to the time zone set up for the Watchdog.

NB. Do not set both start and Stop to 0:00.  That means OFF all day. 

Steps to Config and process a watchdog :

1.Launch screen 

2.Uncheck/Check Morning check or evening according to the requirement

3.Check/uncheck options like Background process, Restart Managers Automatically when available , Interactive Users

4.Navigate to config panel ,select the required option in the drop down of Morning and evening fields.

5.Select the desired out put format. Both HTML and PDF available .

6.Click Execute Check .This will redirect to page Show result .

Find the below gif attached for process :