General XA is not supported on OS/400 or Compaq NonStop Kernel.
An XA switch load module is provided to enable you to link CICS with
WebSphere MQ on UNIX systems. Additionally, sample source code files
are provided to enable you to develop the XA switches for other transaction
messages. The names of the switch load modules provided
are:
Table 9. Essential code for CICS applications -- XA initialization routine It is possible for WebSphere MQ on Windows and UNIX systems to block
Tuxedo-coordinated XA applications indefinitely in xa_start. This can
occur only when two or more processes coordinated by Tuxedo in a single global
transaction attempt to access WebSphere MQ using the same transaction branch
ID, or XID. If Tuxedo gives each process in the global transaction a
different XID to use with WebSphere MQ, this cannot occur.
To avoid the problem, configure each application in Tuxedo that will access
WebSphere MQ under a single global transaction ID (gtrid), within its own
Tuxedo server group. Processes in the same server group use the same
XID when accessing resource managers on behalf of a single gtrid, and are
therefore vulnerable to blocking in xa_start in WebSphere MQ. Processes
in different server groups use separate XIDs when accessing resource managers
and so will not have to worry about serializing their transaction work in
WebSphere MQ.
C (source)
C (exec) - add one of the following to your
XAD.Stanza
amqzscix.c
amqzsc - CICS for AIX Version 2.1,
amqzsc - TXSeries for AIX, Version 4.2,
amqzsc - TXSeries for HP-UX, Version 4.2,
amqzsc - CICS for Siemens Nixdorf SINIX Version 2.2,
amqzsc - TXSeries for Sun Solaris, Version 4.2
amqzscin.c
mqmc4swi - TXSeries for Windows NT, Version 4.2
WebSphere MQ XA support and Tuxedo