🚀 go-pugleaf

I'm using visibroker 4.5 on AIX 5.1
I tried to migrate the corba code working fine with BOA to POA.
After this migration,the application is dumping  intermittently.
I also found that the core is caused a segmentation violation on
connecting to DB2 from server.
http://www-1.ibm.com/support/docview.wss?uid=swg21007191

So I tried to increase the Thread stack size in properties file
-OAthreadStackSize=256000

But it didnt work. Then I tried
vbroker.se.default.scm.default.dispatcher.threadStackSize=256000

Still it fails. 

Is it bcoz the application is not able to set threadStackSize given in
properties file.

I need to fix this urgently. Pls advice.

DBX output:
Segmentation fault in sqlowque at 0xd1104f74 ($t8)
0xd1104f74 (sqlowque+0x1c) 7c21616e      stwux   r1,r1,r12
(dbx) where
sqlowque(??, ??, ??) at 0xd1104f74
sqlccipcconnr__FP13sqlcc_connectP15sqlcc_comhandleP10sqlcc_cond(??,
??, ??) at 0xd1123a18
sqlccconnr__FP13sqlcc_connectP15sqlcc_comhandleP10sqlcc_cond[1]
[fdpr](??, ??, ??) at 0xd112aec0
sqloCreateEnvString(??, ??) at 0xd1144c30
sqle_db2ra_ar_driver__FP10sqle_db2raP17sqle_ar_interface[6] [fdpr](??,
??) at 0xd10d23ec
sqle_database_connect__FP10sqle_db2raP10sqler_glob[1] [fdpr](??, ??)
at 0xd10e5994
sqleriar__FP10sqle_db2ra(??) at 0xd10d9d2c
sqleStartUsingDatabase__FPcciT2N31P10sqlf_dbcfdT1P8sqledscbP5sqlcaT1T3(0x204949e4,
0x53000053, 0x1, 0x0, 0x20133818, 0x20494ae4, 0x0, 0x0) at 0xd112eabc
sqlak_connect__FUsT1[4] [fdpr](??, ??) at 0xd1208d64 sqlacall[4]
[fdpr](0x1d001d, 0x50005, 0x20002, 0x0, 0x0) at 0xd10df2ec
clp_connect__FP15CLI_CONNECTINFOP15sqla_program_idUsPcN34P5sqlca(??,
??, ??, ??, ??, ??, ??, ??) at 0xd13aa690
CLI_sqlConnect__FP15CLI_CONNECTINFOP5sqlcaP15CLI_ERRLISTINFO(??, ??,
??) at 0xd12986e4
SQLConnect2__FPP15CLI_CONNECTINFOPUcsT2T3T2T3T2T3Uc(??, ??, ??, ??,
??, ??, ??, ??) at 0xd123c1a4
SQLDriverConnect2__FPP15CLI_CONNECTINFOPvPUcsT3T4PsUsUcT9P15CLI_ERRLISTINFO(??,
??, ??, ??, ??, ??, ??, ??) at 0xd124197c
SQLDriverConnect1__FPP15CLI_CONNECTINFOPvPUcsT3T4PsUs(??, ??, ??, ??,
??, ??, ??, ??) at 0xd123b520 SQLDriverConnect(??, ??, ??, ??, ??, ??,
??, ??) at 0xd1238c80 open(const RWCString&,const RWCString&,const
RWCString&,const RWCString&,RWDBStatus&)(0x2046b1a8, 0x204962f8,
0x204962fc, 0x20496300, 0x20496304, 0x2046be10), line 158 in
"db2sysh.cpp"
open()(0x2046be08), line 86 in "db2conn.cpp"
unnamed block $b1226, line 111 in "poolable.cpp"
checkOut(RWDBConnection::ConnectionType)(0x2009c114, 0x1), line 111 in
"poolable.cpp"
getFromConnectionPool(RWDBConnection::ConnectionType)(0x2009c088,
0x1), line 139 in "dbasei.cpp"
connection(RWDBConnection::ConnectionType) const(0x2009b874,
0x20496510, 0x1), line 294 in "dbase.cpp"
login() const(0x2009b858, 0x204969f4), line 165 in
"SingleDatabase.cpp"
unnamed block $b1515, line 65 in "ClientTransaction.cpp"
login()(0x2046bb88), line 65 in "ClientTransaction.cpp"
aux_call(Container&)(0x2009a868, 0x20496d48), line 162 in
"dcs_asRebsServer.cpp"
unnamed block $b680, line 50 in "MethodHelper.cpp"
call(Container&,int)(0x2009a868, 0x20496d48, 0x0), line 50 in
"MethodHelper.cpp"
unnamed block $b690, line 247 in "RIOSEnteraBridgeImpl.cpp"
bigSwitch(Container&)(0x201800a8, 0x20496d48), line 247 in
"RIOSEnteraBridgeImpl.cpp"
unnamed block $b693, line 89 in "RIOSEnteraBridgeImpl.cpp"
call(const char*)(0x201800a8, 0x2046a018), line 89 in
"RIOSEnteraBridgeImpl.cpp"
_call(void*,CORBA_MarshalInBuffer&,const
char*,VISReplyHandler&)(0x201800fc, 0x204696c8, 0x201980c8,
0x20496f00), line 52 in "RIOSEnteraBridge_s.cpp"
execute__11VISSkelInfoFRC14VISGIOPRequestR21CORBA_MarshalInBufferR15VISReplyHandler(0x20183048,
0x20469a38, 0x204696c8, 0x20496f00) at 0xd437c604
_do_request__22VISGIOPProtocolAdapterFP14VISGIOPRequestP14VISGlobalTable(0x20469238,
0x20469a38, 0x20469438) at 0xd44cc158
_dispatch_message__22VISGIOPProtocolAdapterFPQ2_14ProtocolEngine7MessageP14VISGlobalTable(0x20469238,
0x20469b18, 0x20469438) at 0xd44ca570
dispatchMessage__22VISGIOPProtocolAdapterFPQ2_14ProtocolEngine7MessageR14VISThreadLocal(0x20469238,
0x20469b18, 0x20469438) at 0xd44cfcd4
do_work__23VISThreadPoolDispatcherFPQ2_14ProtocolEngine15ProtocolAdapterRl(0x2017d0c8,
0x20469238, 0x20469390) at 0xd45008e4
do_work__17VISDispatchWorkerFP14VISThreadLocal(0x20469388, 0x20469438)
at 0xd4502f84 _perform_task__13VISThreadPoolFP14VISTPoolWorker(0x2017d0d4,
0x20469408) at 0xd4503a44
begin__14VISTPoolWorkerFv(0x20469408) at 0xd4504d78
_start__9VISThreadFPv(0x20469408) at 0xd372c2cc
pthread._pthread_body(??) at 0xd00080c8