A fix is available
APAR status
Closed as new function.
Error description
New function
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: * * Installations exploiting Parallel Sysplex, * * particularly those using the z/OSMF Sysplex * * Application, at z/OS V2R5 (HBB77D0) and * * above. * **************************************************************** * PROBLEM DESCRIPTION: * * Enhancements to the IXLCSP * * structure calculation service - * * software emulation of CFLevel 26. * * * * SYSPLEXDS E9175/K * **************************************************************** * RECOMMENDATION: * * Install the applicable PTF on all systems in * * the sysplex. A rolling IPL is sufficient to * * activate the support. * **************************************************************** It is highly desirable to compute sizes for coupling facility (CF) structures at CFLevels not yet installed in the system, to facilitate capacity planning and migration. Today, structure size calculations can be performed directly by the CF or emulated for CFLevel 25. With the release of CFLevel 26 (provided by IBM z17), we wish to continue adding to this support, allowing users to specify the new CFLevel for which its structure sizing calculation is to be performed through the IXLCSP API.
Problem conclusion
Temporary fix
Comments
This APAR provides support for software emulation of CFLevel 26 structure computation functions. When installed, the IXLCSP structure computation service can perform size and count calculations for CFLevel 26 even when there is no CF at that level configured in the sysplex. For z/OS V2R5 (HBB77D0), we can support only one CFLevel and will replace the existing CFLevel 25 support with CFLevel 26, while z/OS 3.1 (HBB77E0) and z/OS 3.2 (HBB77F0) will support both CFLevel 25 and CFLevel 26.
APAR Information
APAR number
OA67351
Reported component name
CROSS SYS.EXT.S
Reported component ID
5752SCIXL
Reported release
7D0
Status
CLOSED UR1
PE
NoPE
HIPER
NoHIPER
Special Attention
YesSpecatt / New Function / SYSPLXDS /
Xsystem
Submitted date
2025-01-03
Closed date
2025-05-28
Last modified date
2025-07-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UJ97260 UJ97261 UJ97277
Modules/Macros
IXLCFMT2 IXLCFMT1 IXCL2BAP IXCI2JST IXCF1VCC IXCI2PH1 IXCL2SCL IXCL2SCC IXLYCON
Fix information
Fixed component name
CROSS SYS.EXT.S
Fixed component ID
5752SCIXL
Applicable component levels
R7F0 PSY UJ97261
UP25/06/11 P F506
R7D0 PSY UJ97277
UP25/06/11 P F506
R7E0 PSY UJ97260
UP25/06/11 P F506
Fix is available
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[{"Business Unit":{"code":"BU011","label":"Systems - zSystems software"},"Product":{"code":"SG19O"},"Platform":[{"code":"PF054","label":"z Systems"}],"Version":"7D0"}]
Document Information
Modified date:
02 July 2025