Diagnosing resolver problems
This topic describes how to diagnose resolver problems
and contains the following subtopics:
The resolver provides two kinds of tracing plus an IPCS subcommand to help analyze resolver problems in dumps. The resolver provides TRACE RESOLVER information that can be helpful in debugging problems an application program could have with using resolver facilities (for example, GetAddrInfo or GetNameInfo). Component Trace is used for tracing the RESOLVER component (SYSTCPRE) for diagnosing resolver problems that cannot be isolated to one particular application. Use the IPCS RESOLVER subcommand to format and summarize resolver control blocks (see RESOLVER command).
See z/OS Communications Server: IP Configuration Reference for additional information.