Troubleshooting
Problem
This article explains the cause of the error "25507 The specified service name or protocol is unknown." when trying to access a remote database, through the TCP/IP protocol.
Symptom
You receive this error when trying to access a remote database:
25507: The specified service name or protocol is unknown.
and the remote database does not have any problems with local TCP/IP connections.
[{"Product":{"code":"SSGU8G","label":"Informix Servers"},"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Component":"--","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF025","label":"Platform Independent"},{"code":"PF010","label":"HP-UX"},{"code":"PF016","label":"Linux"},{"code":"PF022","label":"OS X"},{"code":"PF027","label":"Solaris"},{"code":"PF033","label":"Windows"}],"Version":"10.0;11.1;11.5;11.7","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]
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Document Information
Modified date:
11 June 2026
UID
swg21252384