Data trace (SYSTCPDA) for TCP/IP stacks

Use the DATTRACE command to trace socket data (transforms) into and out of the physical file structure (PFS). For TCP and UDP sockets, data trace also creates the following records:

• A Start record with State field API Data Flow Starts that indicates the first data sent or received by the application for the associated socket
• An End record with State field API Data Flow Ends that indicates that the socket has been closed

DATTRACE operates with the following APIs:

• REXX
• C-sockets
• IMS™
• CICS®
• Native z/OS UNIX
• Macro
• CALL Instruction