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7/22/2019 KB_DOC_Oracle Bug

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INTERNAL: PowerCenter session hangs sporadically as the Oracle client call to fetch the session

metadata hangs

Problem Description

Informatica OCI client call to Oracle hangs in read() call sporadically. The stack trace collected from the

Repository Service when the hang was observed is mentioned below.

This issue occurs with Oracle server 11.1.0.7 and Oracle client 11.1.0.6 and PowerCenter 8.6.1 on SUSE

Linux Enterprise Server 10 (x86_64) VERSION = 10 PATCHLEVEL = 2.

Thread 125 (Thread 1094752576 (LWP 19593)):

#0 0x00002b095600193b in read () from /lib64/libpthread.so.0

#1 0x00002aaaac2e8adf in snttread ()

from /u01/app/oracle/product/11.1.0/client/lib/libclntsh.so

#2 0x00002aaaac2e0cb0 in nttfprd ()


#3 0x00002aaaac197624 in nsbasic_brc ()


#4 0x00002aaaac19a36b in nsbrecv ()


#5 0x00002aaaac05522e in nioqrc ()


#6 0x00002aaaacd83736 in ttcdrv ()


#7 0x00002aaaac0846e2 in nioqwa ()


#8 0x00002aaaacd5157e in upirtrc ()




#9 0x00002aaaacd5eefe in kpurcsc ()


#10 0x00002aaaacd54e93 in kpuexec ()


#11 0x00002aaaacd5221b in OCIStmtExecute ()


#12 0x00002aaaaafca68e in TOracleStatement::executenormal ()

from /etlserver/Informatica/PowerCenter/pc861/server/bin/libpmora8.so

#13 0x00002aaaaafca7c5 in TOracleStatement::execute ()

from /etlserver/Informatica/PowerCenter/pc861/server/bin/libpmora8.so

#14 0x00002b095a38ded6 in TStatementImpl::Execute ()

from /etlserver/Informatica/PowerCenter/pc861/server/bin/libpmodl.so

#15 0x00002b095a38aac6 in TStatement::Execute ()

from /etlserver/Informatica/PowerCenter/pc861/server/bin/libpmodl.so

#16 0x00002b0958c4ed8f in FindImpactedObjects ()

from /etlserver/Informatica/PowerCenter/pc861/server/bin/libpmsrep.so

#17 0x00002b0958c4fd0f in IsObjectImpacted ()


#18 0x00002b0958b01998 in TRepository::fetchSessionProperties ()


#19 0x00002b0958b088e8 in TRepository::fetchTask ()


#20 0x00002b095896abeb in RTaskReqHandler::fetchTask ()


#21 0x00002b095861f8bc in RReqDispatcher::processRequests ()



from /etlserver/Informatica/PowerCenter/pc861/server/bin/libpmrcore.so

#22 0x00002b09582a1d8e in RThrPerConnWorker::callDispatcher ()

from /etlserver/Informatica/PowerCenter/pc861/server/bin/libpmrcnxmgr.so

#23 0x00002b09582a4298 in RThrPerConnWorker::processRequest ()


#24 0x00002b09582b0e59 in RCnxReqHandler::proxyRequest ()


#25 0x00002b095861f8bc in RReqDispatcher::processRequests ()

from /etlserver/Informatica/PowerCenter/pc861/server/bin/libpmrcore.so

#26 0x00002b09582a1d8e in RThrPerConnWorker::callDispatcher ()


#27 0x00002b09582a4298 in RThrPerConnWorker::processRequest ()


#28 0x00002b09582a4c8d in RThrPerConnWorker::process ()


#29 0x00002b09582a5938 in RThrPerConnWorker::svc ()


#30 0x00002b0956253dfe in ACE_Task_Base::svc_run ()

from /etlserver/Informatica/PowerCenter/pc861/server/bin/libACE.so.5.4.7

#31 0x00002b0956254d95 in ACE_Thread_Adapter::invoke_i ()


#32 0x00002b0956254cfa in ACE_Thread_Adapter::invoke ()


#33 0x00002b0955ffb143 in start_thread () from /lib64/libpthread.so.0

#34 0x00002b095d0a7b8d in clone () from /lib64/libc.so.6



#35 0x0000000000000000 in ?? ()

Cause

This has been identified as a Oracle server side bug and Oracle has a patch to fix this issue. The Oracle

bug number for this issue is: 6918493

Solution

To resolve this issue, contact Oracle to obtain the above mentioned patch.

More Information

Stack trace for the corresponding SID on the Oracle side that handled the query:

#0 0x00002b836dadf8b8 in __lll_mutex_lock_wait () from /lib64/libc.so.6

#1 0x00002b836da9979d in _L_lock_1663 () from /lib64/libc.so.6

#2 0x00002b836da994d7 in __tz_convert () from /lib64/libc.so.6

#3 0x00000000027656d7 in slgtds ()

#4 0x0000000002765665 in slgtd ()

#5 0x0000000001c00bff in dbktWriteTimestamp ()

#6 0x0000000005cb7f0a in ksdxcb ()

#7 0x0000000005577e64 in sspuser ()

#8 <signal handler called>

#9 0x00002b836dadf8b6 in __lll_mutex_lock_wait () from /lib64/libc.so.6

#10 0x00002b836da9979d in _L_lock_1663 () from /lib64/libc.so.6

#11 0x00002b836da994d7 in __tz_convert () from /lib64/libc.so.6

#12 0x0000000002329f22 in sldxgd ()

#13 0x000000000392e0fd in nldatxtmil ()

#14 0x000000000392e020 in nldatxt ()

#15 0x000000000771b831 in nstimexp ()



#16 0x000000000653c826 in ltmdvp ()

#17 0x000000000653c73f in ltmdrv ()

#18 0x0000000006521c1c in sltmdf ()

#19 0x0000000006510f81 in sslsstehdlr ()

#20 0x0000000006510445 in sslsshandler ()

#21 <signal handler called>

#22 0x00002b836da97a4d in __offtime () from /lib64/libc.so.6

#23 0x00002b836da9953e in __tz_convert () from /lib64/libc.so.6

#24 0x00000000027656d7 in slgtds ()

#25 0x0000000002765665 in slgtd ()

#26 0x0000000001c2c51a in dtegtdi ()

#27 0x000000000223229c in kposdi ()

#28 0x0000000002231cb1 in kpopsdi ()

#29 0x000000000222fb52 in kpoal8 ()

#30 0x0000000007b69390 in opiodr ()

#31 0x0000000007d15804 in ttcpip ()

#32 0x000000000126fc71 in opitsk ()

#33 0x000000000127268e in opiino ()

#34 0x0000000007b69390 in opiodr ()

#35 0x000000000126b9f0 in opidrv ()

#36 0x00000000019a6412 in sou2o ()

#37 0x0000000000955423 in opimai_real ()

#38 0x00000000019ab9ad in ssthrdmain ()

#39 0x000000000095534f in main ()

Applies To



Product(s): PowerCenter

Product Version(s): PowerCenter 8.6.1; PowerCenter 9.0.1; PowerCenter 9.1.0

Database: Oracle 11g