Oracle Solution for Error ora-06974

Solution for Oracle Error ORA-06974

ORA-06974: X.25 Driver: SID lookup failure

What triggered the Error:

From the remote host's SQL*Net X.25 server: the database SID, specified in the login (connect) string, was not recognized.

What should we do to fix it:

Add the appropriate SID entry to the CONFIG.ORA file on the remote host (and restart the SQL*Net X.25 server).