A fix is available
APAR status
Closed as program error.
Error description
IVTSMCSD is scheduled because CSM storage is constrained. In the process of cycling through the CSM storage pools, an abend0c4 occurs when IVTSMCSD references already freed storage. Additional symptom: SRB loop of IVTSMCSD. SRB of IVTSMCSD points to itself. Possible double SRB condition can occur
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: * * All * **************************************************************** * PROBLEM DESCRIPTION: * * ABEND0C4 in IVTSMCSD. * **************************************************************** * RECOMMENDATION: * * Apply the PTF when it is available. * **************************************************************** This problem may be described as follows: 1. CSM fixed storage was at constrained level. 2. An application program issued a CSM PAGE_BUFFER request with type=page_eligible. 3. IVTSMCBF received control to process the request. It found the CSM fixed storage was at the constrained level. It incorrectly checked to see if the side process routine IVTSMCSD was running. It scheduled the IVTSMCSD in error to page free the CSM fixed storage. 4. This caused two processes of IVTSMCSD to be running at the same time and one of the processes received an ABEND0C4 in IVTSMCSD.
Problem conclusion
IVTSMCBF has been changed to schedule the side process routine IVTSMCSD only if it was not already running. IVTSMCSD and IVTSMCFB have been included only for maintenance purposes.
Temporary fix
Comments
APAR Information
APAR number
OA45843
Reported component name
VTAM V4 MVS/ESA
Reported component ID
569511701
Reported release
210
Status
CLOSED PER
PE
YesPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2014-08-12
Closed date
2014-09-04
Last modified date
2014-10-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UA74752
Modules/Macros
IVTSMCBF IVTSMCSD IVTSMCFB
Fix information
Fixed component name
VTAM V4 MVS/ESA
Fixed component ID
569511701
Applicable component levels
R210 PSY UA74752
UP14/09/19 P F409 «
Fix is available
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Document Information
Modified date:
02 October 2014