A fix is available
APAR status
Closed as program error.
Error description
Customer is using CSQ1LOGP utility and he is receiving an ABEND 878 when it is used with some archive logs. The storage was exhausted below and under the line with blocks with eyecatcher MSGP. The reason for this failure is as a result of the CSQ1LOGP EXTRACT(YES) process attempting to cache a very large unit of work. UoW represents a series of MQGETs for over 400,000 messages. CSQ1LOGP's EXTRACT mode needs to use a 4KB page to keep track of each message within a unit of work until it's committed. In this case, the 400,000 messages mean a storage requirement of around 1.6GB of private 31-bit storage is required in order to process this complete UoW which exceeds the private storage available in the address space. Additional keywords: ABEND878 ABENDS878
Local fix
No Local Fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM MQ for z/OS Version 8 * * Release 0 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: When running CSQ1LOGP using * * 'EXTRACT(YES)' on a log that includes * * large units of work, the utility can * * run out of 31 bit storage resulting in * * an 878 ABEND. * **************************************************************** When CSQ1LOGP, doing archive extract, is run against a log with large units of work, then the utility can run out of storage resulting in an ABEND. The utility's archive extract is run in 31 bit addressing mode which limits it to below the bar storage.
Problem conclusion
CSQ1LOGP archive extract has been changed to run in 64 bit addressing mode giving it access to above the bar storage to handle large units of work.
Temporary fix
Comments
APAR Information
APAR number
PI94139
Reported component name
IBM MQ Z/OS V8
Reported component ID
5655W9700
Reported release
000
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2018-02-23
Closed date
2020-08-11
Last modified date
2020-11-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
PH27900 UI71005
Modules/Macros
CSQ1LEXT
Fix information
Fixed component name
IBM MQ Z/OS V8
Fixed component ID
5655W9700
Applicable component levels
R000 PSY UI71005
UP20/11/02 P F010
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.
[{"Line of Business":{"code":"LOB45","label":"Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.0"}]
Document Information
Modified date:
03 November 2020