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2193499 - Crash and stack at s_dbmvbio::AllocateSpecial Error - SAP IQ

Symptom

  • SAP IQ Coordinator crash with stack trace.
  • After Coordinator restarts, when synchronizing the other nodes with dbbackup, dbbackup fails with "database server not running" and Coordinator crashes again with the same stack trace.
  • When this operation is repeated several times, Coordinator constantly crashes.
  • Before each stack trace there are:

MPX ACK Server ID : 3 Action : 4
or
MPX ACK Server ID : 3 Action : 0

Stack Trace:

I. 04/21 02:47:38. 0000000119 **************************************************
I. 04/21 02:47:38. 0000000119 ***   Sybase IQ Abort:
I. 04/21 02:47:38. 0000000119 ***      From:  s_db.cxx:973
I. 04/21 02:47:38. 0000000119 ***      PID: 31482
I. 04/21 02:47:38. 0000000119 ***      Message: s_dbmvbio::AllocateSpecial Error
I. 04/21 02:47:38. 0000000119 ***      Thread: 1263675712  (TID: 21)
I. 04/21 02:47:38. 0000000119 **************************************************
... 
I. .04/21 02:47:38. 0000000119 Dump all thread stacks at s_db.cxx:973 for PID: 31482
...
I. 04/21 02:47:38. 0000000119
***************** This is the STACKTRACE *************** 
I. 04/21 02:47:38. 0000000119
===== Thread Number  1263675712  (IQ connID: 0000000119) =====
I. 04/21 02:47:38. 0000000119 pc: 0x2ae74ef29b66 pcstkwalk(stk_trace*, int, db_log*, hos_fd*)+0x36
I. 04/21 02:47:38. 0000000119 pc: 0x2ae74ef29da1 ucstkgentrace(int, int)+0x111
I. 04/21 02:47:38. 0000000119 pc: 0x2ae74ef2ae21 DumpAllThreads(char const*, unsigned int, int)+0x111
I. 04/21 02:47:38. 0000000119 pc: 0x2ae74ecf44cf hos_ABORT(char const*, unsigned int, char const*, char*, char*)+0x18f
I. 04/21 02:47:38. 0000000119 pc: 0x2ae74f18d248 s_dbmvbio::AllocateSpecial(int, hos_bio::allocPrivilege)+0x388
I. 04/21 02:47:38. 0000000119 pc: 0x2ae74f0a0cc5 s_blockmap::CreateDontZero(short, int, hos_cmprstype, unsigned int)+0x2b5
I. 04/21 02:47:38. 0000000119 pc: 0x2ae74f67b777 s_scratchPage::CreateBuf()+0x47
I. 04/21 02:47:38. 0000000119 pc: 0x2ae74f855e15 v2s_bmcontext::bmlev2sgblkselfalloc(int, int)+0x45
I. 04/21 02:47:38. 0000000119 pc: 0x2ae74f8700ad v2s_bmcontext::bmselfalign(v2s_bmsgblk1_class*, v2s_bmsgpda1_class*)+0xdd
I. 04/21 02:47:38. 0000000119 pc: 0x2ae74f8726ff v2s_bmcontext::bmselfreldif(s_bm*, s_bm const&)+0x21bf
I. 04/21 02:47:38. 0000000119 pc: 0x2ae74f0c213b s_bm::TurnOff(s_bm const&)+0xeb
I. 04/21 02:47:38. 0000000119 pc: 0x2ae74f192668 s_dbmvbio::AdjustFreeList(s_dbmvbio::FLType, s_bm const*, s_bm const*)+0x268\
I. 04/21 02:47:38. 0000000119 pc: 0x2ae74f61a099 s_iqstore::AdjustFreeList(s_bm const*, s_bm const*)+0x49
I. 04/21 02:47:38. 0000000119 pc: 0x2ae74f75e343 st_globalFlMgr::CommitRemoveWriterFreelist(unsigned int)+0x173

 


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Environment

  • SAP IQ 15.x
  • SAP IQ 16.0

Product

SAP IQ 16.0 ; SAP Sybase IQ 15.2 ; SAP Sybase IQ 15.4

Keywords

KBA , BC-SYB-IQ , Sybase IQ , Problem

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