Symptom
- IQ server becomes unresponsive intermittently, for example:
11/06 04:48 - 11/06 05:16
11/06 06:17 - 11/06 06:50 - .srvlog reports such error:
W. 11/06 05:01:13.751383 Task 14c2ca8d0(Request task 190) is trying get forbid mutex held by task 15136acd0(Request task 206) for more than 60000 ms
I. 11/06 06:48:00.643943 Connection terminated abnormally; client socket shut down - Multiple jobs are canceled during the issue occurrence:
I. 11/06 06:35:25. 0000000000 Cancellation request received - Stack trace:
Threads (20): 106037255 131137757 30672583 65929313 44369513 27656993 59901341 52561507 8914079 59048743
.. _event_sleep
.. _event_wait
.. UnixTask::wait
.. CondVar::wait
.. Worker::yield_to_forbidding
.. Worker::do_wait
.. Worker::wait_ex
.. DbCheckpoint::AcquireGate
.. DbCheckpoint::suspend
.. Connection::suspend_checkpoints
.. DB_Commit_Chgs
.. ri_commit
.. Connection::commit_work
Threads (1): 68092663
.. _event_sleep
.. _event_wait
.. UnixTask::wait
.. CondVar::wait
.. TimedMutex::get
.. ForbidMutexSet::get
.. Worker::get_forbid_mutex
.. Worker::get_forbid_mutex
.. Worker::prevent_forbid
.. Connection::PreventForbid
.. SQLAEngineSupport::AcquireResources
.. st_SAIQInterface::Execute
Read more...
Environment
SAP IQ 16.1 SP04 PL12
Product
SAP IQ 16.1
Keywords
Sybase , CR809642 , CR#809642 , deadlock, hang , freeze, bugzilla 154803 , bugzilla 154804, iqpartition, -iqpartition, contention, , KBA , BC-SYB-IQ , Sybase IQ , Known Error
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.