Setting Up JCo Connections 

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       1.      Access the Web Dynpro Content Administrator.

The URL is:

http://<host>:<port>/webdynpro/dispatcher/sap.com/tc~wd~tools/Explorer

       2.      Log on using the administration user for the J2EE server.

       3.      To create the required JCo connections or edit the existing ones, choose Maintain JCo Destinations.

A list of the JCo connections for the metadata and those for the application data is displayed. Connections for various areas exist. The names of the connections start with SAP_R3_*.

JCo connection for metadata: SAP_R3_HumanResources_MetaData.

JCo connection for application data: SAP_R3_HumanResources.

If the software is already installed on the J2EE server, the Web Dynpro Content Administrator automatically recognizes which JCo connections are required.

       4.      Configure the JCo connection for the metadata:

                            a.      As the Connection Type, choose the Dictionary Meta Data option.

                            b.      Choose Security.

                            c.      In the Used Method field, enter User/Password.

                            d.      Enter the user in the mySAP ERP system that you created for the metadata connection.

                            e.      Enter the password for the user.

                              f.      Check the connection.

If the user only has the authorizations from the S_DDIC_MDI profile, the system issues the following error message when you check the connection:
com.sap.mw.jco.JCO$Exception:(104) RFC_ERROR_SYSTEM_FAILURE: No RFC authorization for function group SSCV for user <your metadata user>.

This message does not mean that the specified user does not have the required authorizations for the metadata. It means that the user’s authorizations are not sufficient to test the connection.

       5.      Configure the JCo connection for the application data:

                            a.      As the Connection Type, choose the Application Data option.

                            b.      Choose Security.

                            c.      In the Used Method field, enter Ticket.

                            d.      Check the connection.

To check the authorizations, the system uses the administration user for the J2EE server with which you are logged on. If this user does not exist in your ERP system, the following error message is displayed when you check the connection:

com.sap.mw.jco.JCO$Exception: (103) RFC_ERROR_LOGON_FAILURE: Unable to check the issuer of the SSO ticket.

For more information about the settings and authorization profiles for users, see SAP Note 677732.

See also:

For more information about how to log onto the J2EE server, see SAP Note 721815.

SAP Visual Administrator enables you to establish a connection between the external system and the J2EE Server. For more information about this tool, see Visual Administrator.