Fixes are available
Db2 Version 11.1 Mod 3 Fix Pack 3 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod3 Fix Pack3 iFix001 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod3 Fix Pack3 iFix002 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 6 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 5 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod 4 Fix Pack 7 for Linux, UNIX, and Windows
APAR status
Closed as fixed if next.
Error description
The db2Read API can hang when it is executed concurrently on multiple members in pureScale environment. In this situation, other EDU updating log records also can hang. Example of stack traces in this problem - there will be one stack with UpgradeLock and another with sqloXlatchConflict: <StackTrace> -------Frame------ ------Function + Offset------ 0x0900000000112F14 thread_wait + 0x94 0x090000000D8EC6E8 sqloWaitEDUWaitPost + 0x2D8 0x090000000C80F918 sqlplWaitOnWP__FCP9sqeBsuEduCP14SQLP_LOCK_INFOCP8SQLP_LRBCP15SQL P_LTRN_CHAINCbN25 + 0x273C 0x090000000CCF1F14 sqlplMakeNewRequestSD__FP9sqeBsuEduP14SQLP_LOCK_INFOP11SQLP_TENT RYRP8SQLP_LRBP8SQLP_LRBP15SQLP_LTRN_CHAINbT7CbN29 + 0x160C 0x090000000C870008 sqlpUpgradeLock__FP9sqeBsuEduP14SQLP_LOCK_INFO + 0xE7C 0x09000000098229FC sqlpgReadStartUse__FP9SQLP_DBCBP9sqeBsuEduCUiCUsCUlPb + 0x640 0x090000000E40D74C sqlplfrFMOpenLog__FP12SQLPLFR_DBCBUiP21SQLPLFR_REQ_SCAN_NEXTUlPU lPP9SQLP_LECB + 0xFE8 0x090000000E41D0A8 sqlplfrFMReadLog__FP12SQLPLFR_DBCBP21SQLPLFR_REQ_SCAN_NEXTP17SQL PLFR_SCAN_DATA + 0x42AC 0x090000000DEB492C RunEDU__9sqpLfrEduFv + 0x23BC 0x090000000DEB0264 RunEDU__9sqpLfrEduFv + 0x364 0x090000000DEAFFD0 RunEDU__9sqpLfrEduFv + 0xD0 0x090000000D66B1FC EDUDriver__9sqzEDUObjFv + 0x3F0 0x090000000C3C0DCC sqloEDUEntry + 0x390 </StackTrace> <StackTrace> -------Frame------ ------Function + Offset------ 0x090000000C8137E4 sqloXlatchConflict + 0x540 0x09000000098235D4 sqlpgReadUpdateUseReader__FP9SQLP_DBCBP9sqeBsuEduCUiCUs + 0x63C 0x090000000E40DD78 sqlplfrFMOpenLog__FP12SQLPLFR_DBCBUiP21SQLPLFR_REQ_SCAN_NEXTUlPU lPP9SQLP_LECB + 0x1614 0x090000000E41D0A8 sqlplfrFMReadLog__FP12SQLPLFR_DBCBP21SQLPLFR_REQ_SCAN_NEXTP17SQL PLFR_SCAN_DATA + 0x42AC 0x090000000DEB492C RunEDU__9sqpLfrEduFv + 0x23BC 0x090000000DEB0264 RunEDU__9sqpLfrEduFv + 0x364 0x090000000DEAFFD0 RunEDU__9sqpLfrEduFv + 0xD0 0x090000000D66B1FC EDUDriver__9sqzEDUObjFv + 0x3F0 0x090000000C3C0DCC sqloEDUEntry + 0x390 </StackTrace>
Local fix
Execute db2ReadLog API only on one member.
Problem summary
**************************************************************** * USERS AFFECTED: * * Purescale with more than 3 members. * * Running readlog application from more than 3 members in * * parallel. * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Execute db2ReadLog API only on one to two member(s). * * * * Update to fix pack 3. * ****************************************************************
Problem conclusion
Temporary fix
Comments
APAR Information
APAR number
IT23360
Reported component name
DB2 FOR LUW
Reported component ID
DB2FORLUW
Reported release
B10
Status
CLOSED FIN
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-12-01
Closed date
2018-03-15
Last modified date
2018-03-15
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Applicable component levels
RB10 PSN
UP
RB10 PSY
UP
[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSEPGG","label":"DB2 for Linux- UNIX and Windows"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.1","Line of Business":{"code":"LOB10","label":"Data and AI"}}]
Document Information
Modified date:
03 May 2022