The log shows messages:
DC088071 Initialization TCP/IP environment started
DC088073 Initialization TCP/IP environment terminated. TCP/IP is not active.
Solution:
Verify that the TCP/IP statement is defined to the SYSGEN:
ADD TCP/IP DEFAULT STATUS IS ON DEFAULT TCP_NODELAY OPTION IS OFF DEFAULT STACK IS DEFAULT MAXIMUM NUMBER OF SOCKETS IS DEFAULT MAXIMUM NUMBER OF SOCKETS PER TASK IS DEFAULT PLUGIN MODULE IS RHDCD1IP SERVICES FILE IS OFF