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Diagnosing Problems

The first step in identifying problems is to look carefully at the diagnostics produced by the debugger at the point where the failure occurred. Depending on whether the messages are generated by the debugger or by the library, the messages may be printed in the log window, or may be printed in line mode after erasing the debugger screen.

Many user problems are caused by incorrect installation of system software. These problems can often be diagnosed by understanding what is missing. Sometimes a configuration file is missing. Other times an environment variable definition is needed, or a REXX EXEC is not placed where it will be accessed.

In other cases, problems are caused by network and server failures. For server problems and failures on remote systems, the RPCINFO and SHOWMNT commands are useful. SHOWMNT is described in SHOWMNT , and RPCINFO is described in SAS Technical Report C-113, SAS/C Connectivity Support Library, Release 1.00. Both SHOWMNT and RPCINFO are compatible with the equivalent commands on UNIX.

For true network problems, SNMP or other network diagnostic facilities are most useful.

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