3410811 - Log messages referring to "vectored exception handler" - SAP ASE

• The ASE errorlog prints messages that include 'vectored exception handler' and
• VEH_ followed by a module name
  • Examples : VEH_Optimize , VEH_Execute , VEH_showplan
• A typical log sequence includes
  
  The Adaptive Server will continue its execution as signal 11 is handled by vectored exception handler
  SIGSEGV is caught by VEH_Optimize()
  Return VXACTION_CONTINUE from VEH_Optimize()
  SIGSEGV is caught by VEH_showplan()
  
  
• These may be seen in isolation
• Or they can be seen around a 'full' signal 11 sequence:
  Current process (...) infected with signal 11 (SIGSEGV)
  
  Note:
  
  • These are not limited to a particular stack pattern, a wide variety of stack trace elements can be seen
  • Below a shortened example from a common showplan related pattern
    
    Address 0x0x0000000001c8eb93 (exc_callprint+0x83), siginfo (code, address) = (128, 0x(nil))
    Current process (0x49a300b3) infected with signal 11 (SIGSEGV)
    
    SQL Text: select show_plan(@SPID@,show_plan(@SPID@,-1,-1,-1),show_plan(@SPID@,show_plan(@SPID@,-1,-1,-1),-1,-1),-1)
    
    pcstkwalk
    ucstkgentrace
    ucbacktrace
    terminate_process
    kisignal
    
    The Adaptive Server will continue its execution as signal 11 is handled by vectored exception handler

• SAP Adaptive Server Enterprise (ASE)
  • 16.0 SP03 PL10 and above
  • 16.0 SP04 and above
    
    

show_plan , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Problem