A fix is available
APAR status
Closed as program error.
Error description
You receive the following message: DFHSM0131 CICS is under stress (short on storage below 16MB) Looking at the dump you see the CDSA contains most of the storage below the line. Looking further into the subpools contained in the CDSA you see KESTSK24E is the largest. This contains CICS stack storage for CICS modules. In this case these stacks represented module DFHTIEM, which is defaulting to using a stack below the line. This APAR is taken to make DFHTIEM use a stack above the line.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All CICS users. * **************************************************************** * PROBLEM DESCRIPTION: CICS can go short on storage below the * * 16MB line trying to obtain KESTK24E * * storage for DFHTIEM's stack. * **************************************************************** * RECOMMENDATION: * **************************************************************** CICS can go SOS for below the line storage. DFHTIEM defaults to SMODE(24) for its stack storage. On a system with a constrained DSA, many concurrent tasks attempting to acquire TIEs for the RMI can lead to an SOS condition. KEYWORDS: PK66505
Problem conclusion
DFHTIEM has been changed to use 31-bit Kernel Stack storage, so it no longer contribute to CICS going short on storage below the line.
Temporary fix
FIX AVAILABLE BY PTF ONLY
Comments
APAR Information
APAR number
PM52132
Reported component name
CICSTS FOR VSE
Reported component ID
564805400
Reported release
B0P
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2011-11-18
Closed date
2012-01-17
Last modified date
2012-05-15
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UK75522
Modules/Macros
DFHTIEM
Fix information
Fixed component name
CICSTS FOR VSE
Fixed component ID
564805400
Applicable component levels
RB0P PSY UK75522
UP12/02/14 P E511
Fix is available
Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.
[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSGMGV","label":"CICS Transaction Server"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"1.1.1","Edition":"","Line of Business":{"code":"LOB35","label":"Mainframe SW"}}]
Document Information
Modified date:
15 May 2012