Systems, Applications, and Products (SAP) for data processing is an industry leading enterprise software solution that is widely used among product and process oriented enterprises for finance, operations, HR and many other aspects of a business. SAP ERP solutions provide reliable and efficient platforms to build and integrate enterprise or business-wide data and information systems with ease. One of the drawbacks however is vendor lock-in and the relative inflexibility of SAP solutions to align itself with the business model or customization required. Having understood these challenges, SAP software vendors are moving towards exposing their solutions to SOA.
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The WSO2 SAP adapter has full IDoc and experimental BAPI support. It used the SAP JCO library as the underlying framework to communicate with SAP. This section describes how to set up WSO2 ESB in a SAP environment, how to install the SAP JCo middleware library, SAP Intermediate Document (IdocIDoc) and Business Application Programming Interface (BAPI) adapters.
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Edit the
<ESB_HOME>/repository/conf/axis2/axis2.xmlfile and uncomment the Idoc IDoc sender and listener as follows:Code Block language xml <transportSender name=”idoc” class="org.wso2.carbon.transports.sap.SAPTransportSender"/> ... <transportReceiver name=”idoc” class="org.wso2.carbon.transports.sap.SAPTransportListener"/>
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Setting up the *.server property file
To setup WSO2 ESB as an idoc server IDoc server you need to create the *.server property file and define the relevant properties. The following table lists the properties and the description of each property that should be specified in the *.server property file.
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How to handle the Server unknown error
An example of this error message is as follows:
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[2010-10-25 19:53:00,405] ERROR - DefaultErrorListener Exception occured on : JCOSERVER01 and connection : null com.sap.conn.jco.JCoException: (129) JCO_ERROR_SERVER_STARTUP: Server startup failed at Mon Oct 25 19:53:00 IST 2010. This is caused by either a) erroneous server settings, b) the backend system has been shutdown, c) network problems. Will try next startup in 1 seconds. Could not start server: Connect to SAP gateway failed Connect parameters: TPNAME=JCOSERVER01 GWHOST=cynthia GWSERV=sapgw00 ERROR service 'sapgw00' unknown TIME Mon Oct 25 19:53:00 2010 RELEASE 720 COMPONENT NI (network interface) VERSION 40 RC -3 MODULE nixxsl.cpp LINE 184 DETAIL NiSrvLGetServNo: service name cached as unknown COUNTER 2 at com.sap.conn.jco.rt.DefaultServer.openConnection(DefaultServer.java:1168) at com.sap.conn.jco.rt.DefaultServer.openConnections(DefaultServer.java:1057) at com.sap.conn.jco.rt.DefaultServer.adjustConnectionCount(DefaultServer.java:1004) at com.sap.conn.jco.rt.DefaultServerManager$DispatcherWorker.run(DefaultServerManager.java: 299) at java.lang.Thread.run(Thread.java:619) Caused by: com.sap.conn.jco.JCoException: (129) JCO_ERROR_SERVER_STARTUP: Could not start server: Connect to SAP gateway failed Connect parameters: TPNAME=JCOSERVER01 GWHOST=cynthia GWSERV=sapgw00 ERROR service 'sapgw00' unknown TIME Mon Oct 25 19:53:00 2010 RELEASE 720 COMPONENT NI (network interface) VERSION 40 RC -3 MODULE nixxsl.cpp LINE 184 DETAIL NiSrvLGetServNo: service name cached as unknown COUNTER 2 at com.sap.conn.jco.rt.MiddlewareJavaRfc$JavaRfcServer.accept(MiddlewareJavaRfc.java:2135) at com.sap.conn.jco.rt.ServerConnection.accept(ServerConnection.java:380) at com.sap.conn.jco.rt.DefaultServer.openConnection(DefaultServer.java:1149) © 2012 WSO2 .. 4 more Caused by: RfcException: [null] message: Connect to SAP gateway failed Connect parameters: TPNAME=JCOSERVER01 GWHOST=cynthia GWSERV=sapgw00 ERROR service 'sapgw00' unknown TIME Mon Oct 25 19:53:00 2010 RELEASE 720 COMPONENT NI (network interface) VERSION 40 RC -3 MODULE nixxsl.cpp LINE 184 DETAIL NiSrvLGetServNo: service name cached as unknown COUNTER 2 Return code: RFC_FAILURE(1) error group: 102 key: RFC_ERROR_COMMUNICATION at com.sap.conn.rfc.engine.RfcIoControl.error_end(RfcIoControl.java:255) at com.sap.conn.rfc.engine.RfcIoControl.ab_rfcaccept(RfcIoControl.java:43) at com.sap.conn.rfc.api.RfcApi.RfcAccept(RfcApi.java:41) at com.sap.conn.jco.rt.MiddlewareJavaRfc$JavaRfcServer.accept(MiddlewareJavaRfc.java:2121) ... 6 more |
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