Unfortunately, it is quite difficult to create customized events in Event Manager unless you are proficient in Tcl, OraTcl and
Application Programming Interface (API) management. If you purchase the Oracle product "Performance Pack", you receive
several pre-written Tool command language (Tcl) scripts that may be used to monitor your Oracle database.
System events, like LOGON and SHUTDOWN, provide a mechanism for tracking system changes.
With Oracle, this tracking can be combined with database event notification. Database event notification provides a simple and elegant method of delivering asynchrononous messaging to an application.
- various events on which triggers can be created.
- list of event attribute functions.