DB2 FOR LUW / DB2FORLUW / B10 - DB2

In a Column Organized DPF environment a query may hang which
cannot then be forced off.
The stack trace on for the hanging query on one of the data
nodes will show the following:

-------Frame------ ------Function + Offset------
0x0900000000113194 thread_wait + 0x94
0x0900000034B91414 sqloWaitEDUWaitPost + 0x434
0x090000003587C5C0 sqkfChannel::WaitRecvReady(int,int) + 0x1220
0x090000003588EE20
sqkfChannel::ReceiveAnyBuffer(sqkfBuffer**,int,int*) + 0x680
0x0900000038CAF988 sqlkq_process_ctl_msg(SQLKQ_CB*,int,unsigned
int) + 0x788
0x0900000049753074
sqlkq_process_stopwrite(sqeAgent*,SQLKQ_CB*,int) + 0x2B4
0x0900000049752124 ibm_cde::query::TableQueueWriter::send(bool)
+ 0x484
0x0900000049752870
ibm_cde::query::TableQueueWriter::sendWU(bool) + 0xC0
0x09000000496AE6C8
ibm_cde::query::TableQueueWriteEvaluator::createAndWriteMiniWU(u
nsigned
long,std::vector&,unsigned
long,ibm_cde::query::TableQueueWriter*,short,unsigned int&) +
0x3D8
0x09000000496D6AE4
ibm_cde::query::TableQueueWriteScatterEvaluator::processInputsSy
nchronously() + 0x6A4
0x090000004794EB70
ibm_cde::query::Evaluator::evaluate(bool,bool,ibm_cde::query::Ev
aluator::EvaluatorRestartState&,ibm_cde::query::OptPredicateTrac
ker*) + 0x1040
0x0900000047CD6ECC
ibm_cde::query::EvaluationRoutine::evaluate(unsigned
int,sql_static_data*) + 0x3DC
0x0900000049436350
ibm_cde::query::Scheduler::evaluateChain(ibm_cde::query::Evaluat
ionRoutine*,unsigned long&) + 0x370
0x0900000049433248
ibm_cde::query::Scheduler::runWorkerThread(void*,int*) + 0x318
0x090000004943E8B0
ibm_cde::query::cdeEntryPointImpl(sqeAgent*,void*,void*) + 0xA0
0x090000004C8274C4 cdeInterface::startCdeSubagent(sqeAgent*) +
0xB4
0x0900000037CB3408 sqlriInvokeCde(sqlrr_cb*) + 0x48
0x0900000037CD8998 sqlriSectInvoke(sqlrr_cb*,sqlri_opparm*) +
0x618
0x0900000039E75A08 sqlrr_smp_router(sqlrr_cb*) + 0x188
0x0900000039E71EC8
sqlrr_subagent_router(sqeAgent*,SQLE_DB2RA_T*) + 0xFC8
0x0900000039E54020 IPRA.$sqleSubRequestRouter(sqeAgent*,unsigned
int*,unsigned long*) + 0x7C0
0x0900000039E4E0C8 sqleProcessSubRequest(sqeAgent*) + 0x2C28
0x0900000034BAABCC sqeAgent::RunEDU() + 0x9EC
0x0900000034B8D7C0 sqzEDUObj::EDUDriver() + 0x300
0x0900000034A7C714 sqloEDUEntry + 0x374


An instance restart will be required to clear the hanging agent.

****************************************************************
* USERS AFFECTED:                                              *
* ALL                                                          *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to Db2 11.1 Mod 4 Fixpack 5 or higher                *
****************************************************************

not known / see Local fix

Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :

22.11.2018
16.01.2020
16.01.2020