IXCQUERY returns inline information for both REQINFO=COUPLE and
REQINFO=FEATURES. The information that IXCQUERY returns when you specify
REQINFO=COUPLE is placed in a storage area that you provide.
- LOCAL
- Whether the sysplex is in XCF-local mode. In XCF-local mode, XCF
does not provide signaling services between MVS™ systems in a multisystem environment. (Members
residing on a system in XCF-local mode can exchange messages with
one another, but cannot exchange messages with members on other systems.)
XCF does not support permanent status recording for a system in XCF-local
mode. See z/OS MVS Setting Up a Sysplex for
further information.
- MONOPLEX
- Whether the sysplex is in monoplex mode. In monoplex mode, the
sysplex is made up of a single system that requires the use of a
sysplex couple data set and can use other couple data sets. XCF signaling
services can be used between members on this system.
- MAXSYS
- The maximum number of systems allowed in the sysplex based on
the MVS release level and the
sysplex configuration. If the sysplex is in XCF-local mode or monoplex
mode, then the value of MAXSYS is 1.
The MAXSYS value remains
constant throughout the life of the IPL. Use this information to allow
your program to be independent of future MVS releases
that might increase the maximum number of systems allowed in the sysplex.
For example, your program might need to obtain enough storage for
a table with one entry per system in the sysplex.
- CURRMAXSYS
- The current maximum number of systems allowed in the sysplex (specified
when the sysplex couple data set was formatted). The CURRMAXSYS value
might change during the life of an IPL if you switch to a new sysplex
couple data set formatted for a different number of systems. Use this
information to minimize storage when your program needs to maintain
information about the systems in a sysplex. For example, your program
might need to obtain enough storage for a table with one entry per
system in the sysplex. If the maximum allowable number of systems
in the sysplex is 32, but you have chosen to maintain a sysplex of
only 10 systems, the amount of storage that you need to allocate for
your table is significantly less if you use that required for only
10 systems.
- SYSPLEXID
- The sysplex identifier token for the sysplex. XCF creates the
token when the first system in the sysplex IPLs. The token remains
in existence for the life of the sysplex.
- SYSTEMID
- The identifier of the system on which the IXCQUERY was invoked.
The high order byte contains the XCF slot number. The low order three
bytes contain the XCF system sequence number used to identify a unique
instantiation of the system in the sysplex.
- PLEXNAME
- The name of the sysplex in which this system is participating.
The sysplex name is specified in the COUPLExx parmlib member and in
the couple data sets that support the sysplex.
- CFLEVEL
- The maximum coupling facility operational level supported by the
operating system where the IXCQUERY was issued.
- ND
- The node descriptor of the system where the IXCQUERY macro was
issued.
z/OS MVS Programming: Sysplex Services Guide
Copyright IBM Corporation 1990, 2014
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