Problems with BPEL PM in HA environment

Question

Hi guys, i need your feed back for a case soa suite instalation HA for producction enviroment., BPEL PM,
Please any recomendation, to apply before to send to TARs.
Randomly a selection failure exception ocurr for reading payload request in BPEL instance execution for up & running two nodes BPEL PM cluster
PLATFORM:
Linux x86
Enterprise Linux Enterprise Linux Server 5.2
PRODUCT:
Oracle SOA Suite 10gR3 10.1.3 release, 10.1.3.4.0 (FixPatch)
DATABASE VERSION:
10gR2 10.2.0.4 (FixPatch), using RAC database as dehydration store.
Preparation for production.
INSTANCE NAME(S) AND TYPE OF SYSTEM(S):
BPEL PM cluster Active-Active on J2EE and Web Server cluster OC4J_SOA (OAS)
Using same "staticports.ini" values during instalatin process
Using same IP & Port for multicast in OAS & BPEL PM (jgroups-protocol.xml and opmn.xml - "*225.4.5.6:5000"
Planning for a harware load balancer front-end for BPEL PM cluster nodes
Now for test purpose the collaxa-config.xml with follow values, because not present any balancer for now:
soapCallbackUrl & soapServerUrl set to corresponding Web Server nodes:
Node1: soapCallbackUrl & soapServerUrl -> http://tvsoaapp1.com.mx:7777
Node2: soapCallbackUrl & soapServerUrl -> http://tvsoaapp2.com.mx:7777
DETAILED PROBLEM STATEMENT:
When Up & Running two BPEL PM Instances in cluster active-active topology, then:
Initiating a test instance through BPEL console (10.1.3.4.0) by passing certain parameters fill text area with the
HTML representation (HTML Form) works fine all time or when no use xpath expression for read request variable.
ISSUE 1:
And if initiating a test instance through BPEL console (10.1.3.4.0) by passing certain parameters fill the following text area with the
XML representation (XML Source) of the input message. 50% times in BPEL Console for node 1 OR node 2, execution BPEL instance fail with
follow exception message, for the any XPATH instruction that read input request variable.
com.oracle.bpel.client.BPELFault: faultName: {{http://schemas.xmlsoap.org/ws/2003/03/business-process/}selectionFailure}
messageType: {}
parts: {{summary=<summary>empty variable/expression result.
xpath variable/expression expression "/client:wsGLBCatMultiplesProcessRequest/client:catalogo" is empty at line 79, when attempting reading/copying it.
Please make sure the variable/expression result "/client:wsGLBCatMultiplesProcessRequest/client:catalogo" is not empty.
Possible reasons behind this problems are: some xml elements/attributes are optional or the xml data is invalid according to XML Schema.
To verify whether XML data received by a process is valid, user can turn on validateXML switch at the domain administration page.
</summary>
at com.collaxa.cube.ejb.impl.DeliveryBean.request(DeliveryBean.java:109)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
WORKAROUNDS USED:
Work fine for:
. Wnen one BPEL PM instance (node) is up and another down, work fine node 1 OR node 2.
. BPEL process without empty payload (no use xpath expression for read request variable)
Issue 2: Another today up & running cluster, test any BPEL Service, throws their endpoint url in web browser, i view change fields correspondig
to before test end point, so view mixe parameters betwen bpel services. the execution fail because xpath retry read another payload that
not exist in current bpel.
It may a bug BPEL Console UI, OHS ? or i need place set value configurations ??, Please help.

Answer 1

Hi,
can you please call this BPEL via another BPEL, just to be sure, that this is not a BPELConsole UI bug.