Registering Alerts in the OS Event Log
When an Alert message is written to the Ingres errlog.log file, IVM indicates the alert through a special icon change in the tray toolbar and in the IVM window tree. IVM also lets you set additional preferences for alert notification using the Preferences dialog. These additional preferences include:
• Sound – When selected, you are alerted of an event by a sound (beep).
• Message Box – When selected, you are alerted of an event by a message box if there are unread Alert messages.
A new preference has been added to the Preferences dialog:
• OS Event (for new Events only) – When selected, the full text of all Alert messages resulting from new events are logged in the Operating System [Application] Event log in addition to the Ingres errlog.log file. This new preference allows third-party tools to be signaled by Ingres Alert messages.
In addition, if the operating system supports it (as with Windows), the message category (class) and number is stored as information belonging to the event. External applications that are monitoring error messages for the Ingres installation are given the error category and number without having to parse the text of the message.
If the OS Event option is selected, you can also set preferences for generating the following specific operating system events:
• One event is generated whenever the OS Event option checkbox has been selected or deselected and the Preferences dialog has been validated.
• One or more events are generated when the Alert States have been changed (for example, from “alert” to “non-alert”) in the Messages Categories and Notification Levels dialog.
• One event is generated if IVM detects that the errlog.log file has been manually changed.