Application requesters are able to use TCP/IP to access the DB2 Server for VM application server. DB2 Server for VM application requesters can use private protocol or DRDA remote unit of work protocol over TCP/IP to access the DB2 Server for VM application server. DB2 Server for VM application requesters can use DRDA remote unit of work protocol over TCP/IP to access other DB2 family servers that have TCP/IP support. Other application requesters can use DRDA remote unit of work protocol over TCP/IP to access the DB2 Server for VM application server.