Messaging Gateway agent not starting

Question

I have configured Messaging gateway for connecting Oracle AQ to Websphere MQ. Oracle version is Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production on Linux. I was able to execute all the steps as documented in user's guide without any issues. However now when I try to start the Messaging gateway agent, it gives following error ORA-28575: unable to open RPC connection to external procedure agent.
I have tried changing listener.ora without any luck. Is there any compatibility issue between 64-bit linux and MGW? Enclosed below are the entries from my listener.ora
# Define "where" to listen
# ~~~~~~~~~~~~~~~~~~~~~~~~~~
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = AVAQD))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC))
(ADDRESS = (PROTOCOL = TCP)(Host = adaq03.oneabbott.com)(Port = 1521))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1))
# Pre-Defined Services
# ~~~~~~~~~~~~~~~~~~~~~~~~~~
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SDU = 1460)
(SID_NAME = AVAQD)
(GLOBAL_DBNAME = AVAQD)
(SERVICE_NAME = AVAQD.world)
(ORACLE_HOME = /ofa/product/10.2.0/DB)
(SID_DESC =
(SID_NAME = mgwextproc)
(ENVS = EXTPROC_DLLS=/oracle_home/lib32/libmgwagent.so, LD_LIBRARY_PATH=/oracle_home/jdk/jre/lib/i386:/oracle_home/jdk/jre/lib/i386/server:/oracle_home/lib32)
(ORACLE_HOME = /ofa/product/10.2.0/DB)
(PROGRAM = /ofa/product/10.2.0/DB/bin/extproc32)
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = /ofa/product/10.2.0/DB)
# (ENVS=EXTPROC_DLLS=/ofa/product/10.2.0/DB/lib32/av_extproc_LINUX.so)
(PROGRAM = extproc)
Thanks in advance
Kiran

Answer 1

Hi,
I got this working finally. All of the issues were mainly related to properly setting environment variable LD_LIBRARY_PATH. Oracle Metalink helped in solving those issues so I recommend searching there first if you are getting stuck.
Regards
Kiran