PK02076: SERVANT REGION ENDS WITH MULTIPLE S878-0C ABENDS DUE TO STORAGE SHORTAGE. SP249 KEY2 HAS FILLED UP THE ADDRESS SPACE. | |||||||||||||||||||||||||||||||||||||||||||
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![]() APAR status Closed as program error. Error description Customer uses client digital certificates. During a day when workload was 30% higher than previous peak, the servant suddenly received multiple S878-0C ABENDs in RACF and then ended. Analysis of the dump shows hundreds of CPOOL extents for this CPOOL: "SCBBO 2 Page PC Cpool" Each of these CPOOL extents have damaged free chains. There is usually one but sometimes two or three allocated elements, but the free chain pointer at the beginning of the next element has been zeroed out. When the next CPOOL element is requested the head of the free chain is set to zero. On the next request for a CPOOL element, a new segment will be obtained. VSMDATA will show hundreds of Subpool 249 Key 2 blocks that are C9000 bytes long. The beginning of each block will contain "SCBBO 2 Page PC Cpool". For all CPOOL extents except the first, the cells start 0x18 bytes into the area, and they are 0x2000 bytes long. The free chain pointer is at offset 0 in each cell.Local fix Problem summary **************************************************************** * USERS AFFECTED: All users of WebSphere Application Server * * V5.0 for z/OS * **************************************************************** * PROBLEM DESCRIPTION: A servant abended ABEND878/00C. * * * * Multiple RACF messages are also * * displayed on the console. * * * * ICH409I 878-00C ABEND DURING IRRSIA00 * * PROCESSING. * * * * IRR401I 878 ABEND DURING RACF * * PROCESSING * * * * ICH409I 878-00C ABEND DURING RACINIT * * PROCESSING * * * * BBOO0220E SECJ0056E: Authentication * * failed for reason Authentication * * failed for passed certificate * * * **************************************************************** * RECOMMENDATION: * **************************************************************** The abends occured due to a lack of storage in subpool 249, key 2. The storage failures were caused by a storage overlay by the BBOSSITU dynamic area of the CPOOL chain pointers, causing the CPOOL code to think it needed to obtain storage instead of using entries in the current CPOOL. A compiler option used to catch errors of this kind did not work because an entry linkage macro used part of the module dynamic area and this extra space used was not accounted for in the compiler option.Problem conclusion The compiler option in the affected modules was changed to account for the entry linkage space in order to prevent future updates from causing the module dynamic area to overlay the CPOOL structure. APAR PK02076 is associated with SERVICE LEVEL W502027 of WebSphere Application Server V5.0 for z/OS.Temporary fix Comments
APAR is sysrouted FROM one or more of the following: APAR is sysrouted TO one or more of the following: PK02314 Modules/Macros
Publications Referenced
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Document Information |
Current web document: swg1PK02076.html
Product categories: Software > Application Servers >
Distributed Application & Web Servers > WebSphere Application
Server for z/OS
Operating system(s):
Software version: 500
Software edition:
Reference #: PK02076
IBM Group: Software Group
Modified date: Apr 28, 2005
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