When recording an Oracle Forms 6 application using the Oracle Forms 6 project type, Silk Performer listens on both transport channels: HTTP/HTTPS and Sockets.
Some applications that operate on the Socket layer have been known to crash Internet Explorer while both channels are being recorded. This is why Silk Performer allows you to specify the transport channel that is of interest to you.
This setting is defined in the Recording Profile dialog box.
Now when you begin recording, do not select the preconfigured Oracle Forms 6i application type, use Internet Explorer as you have already changed its recording profile configuration.