SAP Knowledge Base Article - Preview

2883016 - 'CtlibController' exiting following Signal 6 in gsignal(), signal 11, timeslice errors - SAP ASE


  • SAP systems on SAP ASE 16.0 SP03 PL07 and above, with HADR replication (Always On setup), stop accepting new connections.
  • The problem mainly affects secondary DR server but maybe seen on the primary server on occasion.
  • ASE errorlog reports the following error with a stack trace: 

Current process (0x24850205) infected with signal 6 (SIGABRT/SIGIOT)
Address 0x0x00007f5ffef27f67 (gsignal+0x37), siginfo (code, address) = (-6, 0x0x05f5f7ed000074ca)

  The accompanying stacktrace includes the functions:


  Note: A complete stacktrace is available under Attachments.

  • The stacktrace error is followed by the message:

Run to completion task 'CtlibController' exiting.

  • ASE errorlog may report  'Current process infected with signal 11 (SIGSEGV)' together with a stack trace which includes the functions:


  • The above stack trace errors are followed by multiple timeslice errors.

    The  stack trace errors accompanying the timeslice failures, may reference any of the following functions:


  • The following message is also seen amidst the above errors:

hadr_quitfn: kpid 1354956888 releasing HADR sema redirect count 0 flags 0:

  • ASE database is inaccessible and unresponsive after the timeslice errors arise.

  • ASE may crash while holding following taskblock spinlocks after the above errors.

Spinlocks held by taskblock 0x7ef997caadf8 
Spinlock User Log Cache Spinlocks at address 0x00007ef997260f00 owned by 0x7ef997caadf8

Spinlocks held by taskblock 0x147809288
Spinlock fglockspins at address 0x0000000146c1c980 owned by 0x147809288

Spinlocks held by taskblock 0x7ef997caadf8 
Spinlock Default Data Cache Spinlocks at address 0x00007ef997260f00 owned by 0x7ef997caadf8

  • On systems running SAP applications, the affected queries are HADR-monitoring queries (note the 'SQL query' in the stacktrace for the failing process), for example:

INSERT INTO #sevDateMessage (severity, date, message) select Severity, Date, Message
FROM master..hadrGetLog WHERE _logicalHost = 'Sit' AND _serverType = 'RS' AND _startDate = '2020-04-12 01:05:36'

select LogicalHost, ASELogBacklog, RSQueueBacklog, DBName, (case when isnumeric(RSDeviceSize) > 0
then cast(RSDeviceSize as integer) else null end) - (case when isnumeric(RSDeviceUsed) > 0
then cast(RSDeviceUsed as integer) else null end) from master..hadrStatusResource
/* R3:CL_SQL_STATEMENT==============CP:500 T:hadrStatusResource M:001 */



  • SAP Adaptive Server Enterprise (ASE) 16.0 SP03 PL07 and higher for Business Suite
  • SAP NetWeaver (NW)  
  • High Availability Disaster Recovery (HADR)
  • SAP Adaptive Server Enterprise (ASE) 16.0 SP03 PL07 and higher
  • SAP Replication Server (SRS) 16.0 SP03 PL07 and higher


SAP Adaptive Server Enterprise 15.7 ; SAP Adaptive Server Enterprise 16.0 ; SAP enhancement package 6 for SAP ERP 6.0


HADR, CtlibController, gsignal, 821748, CR821748, CR#821748, CR#820713, CR820713, 820713, CR#821170, CR821170, 821170, 820370, CR820370, CR#820370, kisignal, stacktrace, CR 820370, 822182, CR822182, CR#822182, SRS, HADR, CR819445, CR#819445, 819445, CR#820657, CR820657, 820657, SEGV, segmentation, storage, access, violation, fault, segfault , KBA , BC-DB-SYB , Business Suite on Adaptive Server Enterprise , BC-SYB-REP , Sybase Replication Server (standalone) , BC-SYB-REP-SAP , Replication with SAP Suite / SAP BW , Bug Filed

About this page

This is a preview of a SAP Knowledge Base Article. Click more to access the full version on SAP for Me (Login required).

Search for additional results

Visit SAP Support Portal's SAP Notes and KBA Search.