Traces

The following traces can be used to gain information about data flows and actions of the IMS™ TCP/IP Services socket interface system. The IP packet trace facility is the most helpful trace facility when writing and debugging your own client programs and IMS transactions. The TCP/IP internal traces are mainly used to diagnose problems with the TCP/IP network and socket-specific problems. The IMS traces are mainly used to diagnose IMS-specific problems, such as IMS transaction scheduling and database commit and rollback errors. The IMS assist module trace is used to determine problems with the IMS Assist module. This trace can be enabled by adding a sysdebug dd card to the IMS region procedure where the IMS transaction using the Assist Module is running.