Connectivity of Java and SAP using JCO

Hi,
Using the example5 given along with the JCO package I was able to connect to Java from SAP. Can I use the same server for bi directional data transfer . That is I want to use the same server to recieve data from SAP and also I should be able to Send data to SAP from Java using the same server.
Regards ,
Nagaraju Donikena.

Hi,
You can use the same server for data sending and receiving.
You can also go through the following link for knowing more about JCO.
http://www.persistent.co.in/resource_center/
white_papers/Java_SAP_Integration.pdf
Thanks
Ritushree

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I have checked the connection string and everything appears to be fine.
Please let me know what the problem is.
Regards,
Rupesh.

Hi rupesh,
See this thread:
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/f3f93ee7-0c01-0010-2593-d7c28b5377c2
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Look
https://www.sdn.sap.com/irj/sdn/downloaditem?rid=/library/uuid/6615ea90-0201-0010-be81-e7a300fdf212
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Error while creating connection between Java and ABAP

Experts
I am getting the following error message when I am trying to test the connection between JAVA and ABAP systems.
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Hi All,
I am connecting to SAP system using jar sapjco3. I am able to connect to SAP system successfully. But I observed some difference in connection to SAP system between different servers.
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2. Using SAP Netweaver AS 7.3
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When I give any random string as RFC destination in other servers, it is connecting to SAP and not in SAP AS?
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Vivek,
We have the WebAs 640 Java system running on a AIX server. I placed the following folder under classpath
/usr/sap/<SAPSID>/JC**/j2ee/cluster/server/bin/ext/com.sap.mw.jco/sapjrfc.jar
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JCO.classInitialize(): Could not load middleware layer 'com.sap.mw.jco.rfc.MiddlewareRFC'
JCO.nativeInit(): Could not initialize dynamic link library sapjcorfc [Can't find library sapjcorfc (libsapjcorfc.a or .so) in sun.boot.library.path or java.library.path
sun.boot.library.path=/usr/java14_64/jre/bin
java.library.path=/usr/java14_64/jre/bin:/usr/java14_64/jre/bin/classic:/usr/java14_64/jre/bin:/usr/sap/RID/JC15/j2ee/os_libs:/usr/sap/RID/SYS/exe/run:/home/db2_mgr/sqllib/lib:/home/db2_mgr/sqllib/lib:/usr/lib:/usr/sap/RID/JC15/j2ee/os_libs:/usr/sap/RID/JC15/j2ee/os_libs:/usr/lib:/lib:/usr/sap/RID/SYS/exe/run:/home/db2_mgr/sqllib/lib:/home/db2_mgr/sqllib/lib]. java.library.path [/usr/java14_64/jre/bin:/usr/java14_64/jre/bin/classic:/usr/java14_64/jre/bin:/usr/sap/RID/JC15/j2ee/os_libs:/usr/sap/RID/SYS/exe/run:/home/db2_mgr/sqllib/lib:/home/db2_mgr/sqllib/lib:/usr/lib:/usr/sap/RID/JC15/j2ee/os_libs:/usr/sap/RID/JC15/j2ee/os_libs:/usr/lib:/lib:/usr/sap/RID/SYS/exe/run:/home/db2_mgr/sqllib/lib:/home/db2_mgr/sqllib/lib]
The problem is a search on libsapjcorfc.* only return dll files and no .so or .a files.
Wondering how ISA loads the native libraries on AIX!
Thx,
Bharat.

Runtime exception while I connect to SAP using JCO

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I have added all the JCO API DC to my project and all the classes are available in that.
I am getting runtime exception class not found - com.sap.mw.jco.JCO$Repository
I am deploying the java dc in the SAP J2EE Server by making Java Lib DC & deploy that.
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JCo connection between java and ABAP

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Any pointers for some good material on establishing JCo connection between ABAP and Java to execute ABAP FMs.
Thanks and Regards
Arpita Saxena

Please find following link for your reference.
[http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/85a483cb-0d01-0010-2990-c5168f01ce8a?quicklink=index&overridelayout=true]

Calls between salesforce and crm sap using jco

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My requirement is as follows:
Tight integration of SFDC and SAP CRM in order to make Business Partners in sync across the systems. This will be a two way integration wherein any changes made to any business partner must be reflected in the other system upon batch/ real-time execution.
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CRMXIF_PARTNER_SAVE
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Take care,
Stephen

SAP connectivity from Java to SAP 4.0

Hi All,
I am tried to send an IDOC(whose basic type, extension are known) to SAP system(ECC 6.0) using the SAP JCo API 3.0 and all works well.
Now I used the same piece of code to connect to SAP 4.0 system but the following basic line of code has ran into a IDOCRUNTIMEEXCEPTIION
doc = iDocFactory.createIDocDocument(iDocRepository, iDocType, iDocCymType);
com.sap.conn.idoc.IDocRuntimeException: Unable to get metadata for MATMAS03 with extension YES2P_IEXT_MATMAS03: Function module "IDOCTYPE_READ_COMPLETE" not found.
at com.sap.conn.idoc.jco.rt.SAPRepository.queryRootSegmentMetaData40(SAPRepository.java:1330)
at com.sap.conn.idoc.jco.rt.SAPRepository.queryRootSegmentMetaData(SAPRepository.java:1122)
at com.sap.conn.idoc.jco.rt.SAPRepository.getRootSegmentMetaData(SAPRepository.java:886)
at com.sap.conn.idoc.rt.DefaultIDocDocument.<init>(DefaultIDocDocument.java:119)
at com.sap.conn.idoc.rt.DefaultIDocDocument.<init>(DefaultIDocDocument.java:57)
at com.sap.conn.idoc.jco.rt.JCoIDocDocument.<init>(JCoIDocDocument.java:58)
at com.sap.conn.idoc.jco.rt.JCoIDocRuntime.createIDocDocument(JCoIDocRuntime.java:143)
at com.sap.conn.idoc.jco.rt.JCoIDocRuntime.createIDocDocument(JCoIDocRuntime.java:32)
at com.sap.conn.idoc.rt.DefaultIDocRuntime.createIDocDocument(DefaultIDocRuntime.java:228)
at com.sap.conn.idoc.rt.DefaultIDocRuntime.createIDocDocument(DefaultIDocRuntime.java:24)
at mxsapconnectorcore.actions.SendIDocToSap.executeAction(SendIDocToSap.java:76)
at mxsapconnectorcore.actions.SendIDocToSap.executeAction(SendIDocToSap.java:38)
at com.mendix.systemwideinterfaces.core.UserAction.execute(SourceFile:57)
at com.mendix.core.actionmanagement.CoreAction.call(SourceFile:457)
at hC.b(SourceFile:207)
at com.mendix.core.Core.execute(SourceFile:226)
at ll.a(SourceFile:69)
at mv.a(SourceFile:72)
at mu.a(SourceFile:151)
at mu.executeAction(SourceFile:98)
at com.mendix.systemwideinterfaces.core.UserAction.execute(SourceFile:57)
at com.mendix.core.actionmanagement.CoreAction.call(SourceFile:457)
at hC.b(SourceFile:207)
at com.mendix.core.Core.execute(SourceFile:304)
at com.mendix.core.Core.execute(SourceFile:280)
at mxsapconnectorcore.actions.IDocOutputQueue.run(IDocOutputQueue.java:116)
at java.lang.Thread.run(Unknown Source)
Caused by: com.sap.conn.jco.JCoException: (104) JCO_ERROR_SYSTEM_FAILURE: Function module "IDOCTYPE_READ_COMPLETE" not found. (raised by system D10|hslsid10)
at com.sap.conn.jco.rt.MiddlewareJavaRfc.generateJCoException(MiddlewareJavaRfc.java:677)
at com.sap.conn.jco.rt.MiddlewareJavaRfc$JavaRfcClient.execute(MiddlewareJavaRfc.java:1830)
at com.sap.conn.jco.rt.ClientConnection.execute(ClientConnection.java:1120)
at com.sap.conn.jco.rt.ClientConnection.execute(ClientConnection.java:953)
at com.sap.conn.jco.rt.ClientConnection.execute(ClientConnection.java:936)
at com.sap.conn.jco.rt.ConnectionManager.internalExecute(ConnectionManager.java:411)
at com.sap.conn.idoc.jco.rt.SAPRepository$ConnectionProvider.execute(SAPRepository.java:1722)
at com.sap.conn.idoc.jco.rt.SAPRepository$ConnectionProvider.access$100(SAPRepository.java:1671)
at com.sap.conn.idoc.jco.rt.SAPRepository.queryRootSegmentMetaData40(SAPRepository.java:1256)
... 26 more
Caused by: RfcException: [D10|hslsid10]
    message: Function module "IDOCTYPE_READ_COMPLETE" not found.
    Return code: RFC_SYS_EXCEPTION(3)
    error group: 104
    key: RFC_ERROR_SYSTEM_FAILURE
Exception raised by D10|hslsid10
at com.sap.conn.rfc.engine.RfcIoOpenCntl.RfcReceive(RfcIoOpenCntl.java:2038)
at com.sap.conn.jco.rt.MiddlewareJavaRfc$JavaRfcClient.execute(MiddlewareJavaRfc.java:1778)
... 33 more
Caused by: com.sap.conn.rfc.exceptions.RfcGetException: Function module "IDOCTYPE_READ_COMPLETE" not found.
at com.sap.conn.rfc.engine.RfcImp.ab_rfcerror(RfcImp.java:1148)
at com.sap.conn.rfc.engine.RfcGet.ab_rfcget(RfcGet.java:120)
at com.sap.conn.rfc.engine.RfcRcv.ab_rfcreceive(RfcRcv.java:33)
at com.sap.conn.rfc.engine.RfcIoOpenCntl.RfcReceive(RfcIoOpenCntl.java:1980)
... 34 more
Now my question is how do I create an IDOC(a blank one) using this API for 4.0 system which doesnt seem to have this function module OR does anyone know other method create IDOC using SAP JCo3.
Please comment. Thanks in advance

We are also still looking for an answer for this issue. The server in our case is running SAP 4.0 package 17 and the function (IDOCTYPE_COMPLETE_READ) only gets added in package 42. However the JCo connector page states it supports R/3 3.1 and newer, so is this a bug or is there an alternative function we could use?

Unable to connect to JAVA from SAP

Hi
My requirement is ABAP program should call java program through JCO. So i have created RFC destination in SAP machine.
I have created the java and ABAP programs also for the same.
After setting every thing I have executed a function module in ABAP which calls the java program.
This call is executing successfully once or twice out of 10 attempts of execution of the ABAP program.
I am getting below error
"Bean Y_TEST_RFCnot found on host XXXXXXX, ProgId =XXXX:
Can some one tell me why it is failing most of the times?
Regards,
Chaitanya.

Hi thanks for responding back to me.
I am already using unicode property. As i mentioned we are able to connect to RFC destination from ABAP program, but this connection is not consistent. Please check my server class (RFCServer_proj extends JCO.Server)constructor below.
public RFCServer_proj(String gwhost,String gwserv,String progid,IRepository repository)
               super(gwhost,gwserv,progid,repository);
               this.setProperty("jco.server.unicode", "1");
               JCO.addServerExceptionListener(this);
I am using another class to start the above server. Please check my server start up code below
private static RFCServer_proj serverConnections[] = new RFCServer_proj[20];
public static void startServers() {
Experian_props props=new Experian_props();
JCO.addClientPool(props.getProperty("jco_pool"), 20, props.getProperty("sap_client"), props.getProperty("sap_user") ,props.getProperty("sap_pwd") ,props.getProperty("sap_language"),props.getProperty("sap_host") ,props.getProperty("sap_sysnum"));
IRepository repository = JCO.createRepository("REP", props.getProperty("jco_pool"));
for(int i=0;i<CONNECTIONS;i++){
        serverConnections <i> = new RFCServer_proj                                      (props.getProperty("gwhost"), props.getProperty("gwservice"),
                 props.getProperty("progid"),repository);
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Here I am creating connection pool of 20 and server instances also 20. Intially I used single server instance.... after increasing the instances to 20 then my days become somewhat good. Connection is successful for every RFC call.
But is it correct way of doing?
I have used SAP server name as gateway host, gateway service as "sapgw00".
Do i need to set any thing in RFC destination?

XML data file links java and sap

Hi ,
Please help me this
How to connect xml file to java into sap
please send me sample scenario.
in java i call the this sap function module 'BAPI_MAT_BOM_EXISTENCE_CHECK'.
1. Check BOM existence with BAPI_MAT_BOM_EXISTENCE_CHECK
2. Exit BOM diff if BOM doesn’t exist
3. Read BOM structure with CSAP_MAT_BOM_READ
4. Compare SAP BOM items incl. subitems to XML BOM items and subitems

currently I use following methods tu opload and to transfor the xml into a string.
* Method to create XML from data file
CALL METHOD instance->import_from_file
    EXPORTING
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    RECEIVING
      retcode = ch_retcode.
* Convert into XML-Stream
CALL METHOD instance->render_2_string
* EXPORTING
*    pretty_print = 'X'
    IMPORTING
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      stream       = lf_string .
*    size         = .
When I use read dataset the output of the xml is into an internal table where I have many lines depending on the XML data file, this means if my xml has 10lines the internal table of read dataset has also 10 lines but I need a string to make the transformation of the xml.

Calling external Java from ABAP using JCo?

Does anyone know if one can use JCo to write a server application that can be called from ABAP.
We are presently using JCo to communicate from Java to SAP.
But we need to call an external Java program from within ABAP.
Is this possible?
Thanks for any input.
Fred

Hi Gregor,
I was hoping you would reply to this -- these posted messages had been here for quite sometime now.
Anyway, here's the case. Our Basis team is installing the JCo in our SAP development server. This is our first time to implement this technology, so no one has a clue at all.
Got a couple of questions for you...
1. What do we need the JDK for? Is it mainly for editing, running, and compiling java files (e.g. Example5.java)?
2. Does the JDK need to be installed at the SAP server as well? Or it doesn't matter, as long as the java files will be accessible from where it was installed at?
Thanks for any response!

Connectivity of Java and SAP using JCO

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