系统退出网络时面临SAP JCO服务器连接问题

Question

We are facing issue with JCO SAP Server.

Issue: We have a running JCO SAP server. Suppose if system gets out of the network, running JCO SAP server start throwing error. If system comes back in network within 30-45 minutes then started JCO SAP server resume its functionality. But if system comes in network after long time say 1 or 2 hours then JCO SAP server doesn't resume its functionality.

Let us know is there any way to increase the retry count and retry interval? Or a way to configure infinite retries.

Approach: We tried to restart JCO SAP server by calling stop method on server instance and then we called start method on same server instance, but still JCO SAP server is not receiving IDOCs sent from SAP server until we restart the JVM.

Expectation: When system comes in network after long time then after restarting the JCO SAP server (calling stop() > release() > start() methods) should work properly.

Does SAP Api have any binding with JVM or it cache something at JVM level?

Please let us know what we need to do? So that started JCO SAP server resumes its functionality even after it's out of network for long time.

Let me know in case you need more information.

Running JCO SAP Version : SAPJCO3.jar (3.0.14)

SAP JCO server error when it goes out of network

2016-09-01 11:34:08,014 ERROR [JCoServerThread-2] SAPServer     com.adeptia.indigo.services.sap.server.ErrorListener.serverExceptionOccurred(ErrorListener.java:46) - ||||administrators|||||admin|Error occured on ADEPTIATEST connection 4-/H/155.56.59.11/H/cpcF501|sapgw05|ADEPTIATEST[CPIC-CALL: SAP_CMACCPTP3 on convId:         

ERROR       connection to partner '155.56.59.11:3299' broken
TIME        Thu Sep 01 11:34:07 2016
RELEASE     720
COMPONENT   NI (network interface)
VERSION     40
RC          -6
MODULE      nixxi.cpp
LINE        5087
DETAIL      NiIRead: P=155.56.59.11:3299; L=192.168.1.73:51413
SYSTEM CALL recv
ERRNO       10054
ERRNO TEXT  WSAECONNRESET: Connection reset by peer
COUNTER     1
]|192.168.1.73||null
com.sap.conn.jco.JCoException: (102) JCO_ERROR_COMMUNICATION: CPIC-CALL: SAP_CMACCPTP3 on convId:         

ERROR       connection to partner '155.56.59.11:3299' broken
TIME        Thu Sep 01 11:34:07 2016
RELEASE     720
COMPONENT   NI (network interface)
VERSION     40
RC          -6
MODULE      nixxi.cpp
LINE        5087
DETAIL      NiIRead: P=155.56.59.11:3299; L=192.168.1.73:51413
SYSTEM CALL recv
ERRNO       10054
ERRNO TEXT  WSAECONNRESET: Connection reset by peer
COUNTER     1

    at com.sap.conn.jco.rt.MiddlewareJavaRfc.generateJCoException(MiddlewareJavaRfc.java:681)
    at com.sap.conn.jco.rt.MiddlewareJavaRfc$JavaRfcServer.listen(MiddlewareJavaRfc.java:2269)
    at com.sap.conn.jco.rt.DefaultServerWorker.dispatch(DefaultServerWorker.java:284)
    at com.sap.conn.jco.rt.DefaultServerWorker.loop(DefaultServerWorker.java:369)
    at com.sap.conn.jco.rt.DefaultServerWorker.run(DefaultServerWorker.java:245)
    at java.lang.Thread.run(Thread.java:745)
Caused by: RfcException: [null]
    message: CPIC-CALL: SAP_CMACCPTP3 on convId:         

ERROR       connection to partner '155.56.59.11:3299' broken
TIME        Thu Sep 01 11:34:07 2016
RELEASE     720
COMPONENT   NI (network interface)
VERSION     40
RC          -6
MODULE      nixxi.cpp
LINE        5087
DETAIL      NiIRead: P=155.56.59.11:3299; L=192.168.1.73:51413
SYSTEM CALL recv
ERRNO       10054
ERRNO TEXT  WSAECONNRESET: Connection reset by peer
COUNTER     1

    Return code: RFC_FAILURE(1)
    error group: 102
    key: RFC_ERROR_COMMUNICATION

    at com.sap.conn.rfc.engine.RfcIoOpenCntl.RfcListen(RfcIoOpenCntl.java:2315)
    at com.sap.conn.jco.rt.MiddlewareJavaRfc$JavaRfcServer.listen(MiddlewareJavaRfc.java:2229)
    ... 4 more
Caused by: 
>RfcIoException:
    message: CPIC-CALL: SAP_CMACCPTP3 on convId:         

ERROR       connection to partner '155.56.59.11:3299' broken
TIME        Thu Sep 01 11:34:07 2016
RELEASE     720
COMPONENT   NI (network interface)
VERSION     40
RC          -6
MODULE      nixxi.cpp
LINE        5087
DETAIL      NiIRead: P=155.56.59.11:3299; L=192.168.1.73:51413
SYSTEM CALL recv
ERRNO       10054
ERRNO TEXT  WSAECONNRESET: Connection reset by peer
COUNTER     1

    Return code: RFCIO_ERROR_SYSERROR(5)<


    at com.sap.conn.rfc.engine.RfcIoOpenCntl.ab_rfclisten(RfcIoOpenCntl.java:1392)
    at com.sap.conn.rfc.engine.RfcIoOpenCntl.RfcListen(RfcIoOpenCntl.java:2311)
    ... 5 more

Answer 1

It should work fine when you do the following while stopping JCO server instance:

1. Delete reference to your server from ServerDataEventListener instance. You can retrieve reference of ServerDataEventListener instance from your registered ServerDataProvider object.
2. Delete reference to your destination from DestinationDataEventListener instance. You can retrieve reference of DestinationDataEventListener instance from your registered DestinationDataProvider object.