File Events on HP OpenVMS
File events work without restriction on HP OpenVMS. File events allow you to raise events in Redwood Server as soon as a file arrives. The files must reside on a file system that the user who starts the network-processor has access to. You specify a list of directories and file patterns, when a file matching the pattern is detected, the event is raised. You specify a move directory to clearly see which files have been detected.
Locked files
When you check the Check if file is in use property of a file event (default checked) the HP OpenVMS platform agent will use test the detected file for RMS file locks. In this case, a file event is only ever raised when the process that created or updated the file has released the lock on the file. This allows big files to be picked up as soon as they are complete, so the entire file is processed.
As the OpenVMS operating system includes reliable locking interfaces there is no need for an external program to check for file locks as is needed on UNIX. For this reason no configuration of this facility is required.