IDMS TCPIP SOCKET-FUNCTION-GETHOSTBYADDR function fails with RSNCD 78891004
Article ID: 50232
Updated On: 05-23-2023
Products
Issue/Introduction
While trying to create a DC COBOL 'client' program using the example in the IDMS Callable Services Reference manual COBCLI;
TCPIP SOCKET-FUNCTION-GETHOSTBYADDR function fails with Reason Code (RSNCD) 78891004.
What is this error and where can I find Unix System Services TCPIP return/reason error codes?
Environment
Release: 19.0
Resolution
The Unix System Services TCPIP return/reason error codes are documented in the IBM documentation z/OS UNIX System Services Messages and Codes
Section Reason codes (errnojrs) contains the Reason codes that are less than x'1000' whereas Reason codes greater than x'1000' can be located in the IBM documentation z/OS Communications Server: IP and SNA Codes in the chapter Resolver reason codes.
The ERRNOS can be found in the in section Return codes (errnos).
The RSNCD 78891004 received by the GETHOSTBYADDR function consists of two halfwords:
The first halfword (7889) represent the UNIX component ID; the second halfword (1004) contains the reason code in hex (X'1004' or decimal 4100).
The X'1004' or decimal 4100 indicates "Resolver service did not find the specified host name".
When troubleshooting, check the IDMS Jes Log or the Common Services TCPIP log for additional messages.
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