February 2003
Intermediate to advanced
360 pages
11h 25m
English
book
Moving Data Across the DB2 Family
by Paolo Bruni, Michael Ho, Marko Milek, Arne Nilsen, Jose Mari Michael Sanchez
Content preview from Moving Data Across the DB2 Family
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Appendix B. DB2 connectivity 309
B.1 Communication database on DB2 for z/OS
The DDF uses the CDB to verify in- and outbound requests.
When sending a request from z/OS, DB2 uses the LINKNAME column of the
SYSIBM.LOCATIONS table to determine which protocol to use. If the value in the LINKNAME
column is found in the:
SYSIBM.IPNAMES table, TCP/IP is used for DRDA connections
SYSIBM.LUNAMES table, SNA is used
If the same name is in both SYSIBM.LUNAMES and SYSIBM.IPNAMES, TCP/IP is used to
connect to the location.
The table SYSIBM.LUNAMES defines the security and mode requirements for conversations
with other systems. Decisions about how to popu
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