The native MVS™ environment
socket functions use various type of TCP/IP data sets, including:
- Base resolver configuration files
- Translate tables
- Local host tables
- Protocol information
- Services information
The particular file or table chosen depends on the resolver configuration
settings and the presence of given files on the system.
Note: A program's first resolver service request initializes the resolver
definitions that will be used for all resolver requests. For long
running programs, the definitions can be modified by use of the MODIFY
REFRESH operator command. For command usage and syntax, see
z/OS Communications Server: IP System Administrator's
Commands.