A fix is available
APAR status
Closed as program error.
Error description
There are some situations in which the UTOKEN returned on a COFIDENT may not be unique. In these cases, after a UTB has been reused this can result in VLF's use of the wrong VLF class for a COFRETR request. In the reported case, this caused RACF module ICHRIN00 to encounter abend0C7. Logrec also shows abend0C4-38 occurring in COFMRETR with primary asid of VLF.
Local fix
++APARs are available by request. OR Once the problem has been observed, recycling the VLF address space is the best way to rebuild the VLF structures and avoid the impact of the problem.
Problem summary
**************************************************************** * USERS AFFECTED: * * VLF users running z/OS HBB7790 and above. * **************************************************************** * PROBLEM DESCRIPTION: * * Abend0C4-38 in COFMRETR due to an * * non-unique VLF COFIDENT UTOKEN. * **************************************************************** * RECOMMENDATION: * **************************************************************** A VLF UTOKEN is defined as unique based on its UTB generation number. There is a timing scenario where if the UTB is being reused, it may result in the VLF UTOKEN to not be unique. This caused COFMRETR to ABEND0C4 due to the COFRETRI request using the wrong UTOKEN. A subsequent ABEND0C7 in ICHRIN00 may also occur.
Problem conclusion
Ensure that the UTOKEN's UTB generation number is unique when the UTB is being reused.
Temporary fix
********* * HIPER * *********
Comments
APAR Information
APAR number
OA54909
Reported component name
VLF
Reported component ID
5752SC164
Reported release
7A0
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2018-02-10
Closed date
2018-03-02
Last modified date
2018-04-03
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UA95462 UA95463 UA95464
Modules/Macros
COFMRETR COFMIDE2 COFMCBMG COFMCREA COFMIDE1 COFMREMO COFMPURG COFMCON2 COFMDIS2 COFMALLN
Fix information
Fixed component name
VLF
Fixed component ID
5752SC164
Applicable component levels
R7B0 PSY UA95462
UP18/03/14 P F803 ¢
R7A0 PSY UA95463
UP18/03/14 P F803 ¢
R790 PSY UA95464
UP18/03/14 P F803 ¢
Fix is available
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Document Information
Modified date:
03 April 2018