Siebel Administration >  SBL-NET-01020: Internal: unknown hostname

SBL-NET-01020: Internal: unknown hostname

This error message is almost always indicative of network connectivity issue between the Siebel Application Server-Siebel Gateway Server and/or the Siebel Web Server-Siebel Gateway Server. Situations when this error might be reported are while invoking a Server Administration session either:

Via "srvrmgr" command line

Via a dedicated client accessing the Server Administration screens

Via a zero foot print client session accessing the Server Administration screens

The error might not manifest itself on the UI, but is rather reported in server log files maintained on the Siebel application server.

Cause

It indicates that the Siebel entities referred to by host name or IP address are inaccessible for the one of following reasons:

Hostname to IP Address (DNS) resolution issues.

Network connectivity issues between the various Siebel entities (that is Siebel Web Server, Gateway Server and Siebel application server).

Diagnostic Steps

If it is an error being reported while attempting connection from within a zero foot print client session, check the eapps.cfg file and verify the connect string (verify validity of hostnames, IP address etc.)

If it is a "srvrmgr" command line session reporting the error, verify that the/g(windows)-g(UNIX) values are appropriate.

Verify network connectivity issues do not prevail between the various Siebel entities.

Solution

If there are DNS issues then editing the hosts file to include the IP address and host name is a quick fix to the problem.

If there are incorrect entries in the connect string (that refer to the gateway server) - edit the eapps.cfg to incorporate the right values (either host name or IP address).