New Connection in SQL Developer

Hi all,
Everything went well from the setting up of APEX, SQL DEV to the exporting of the Northwind DB. I am now trying to create a connection with the credentials in the application migration workshop pdf. I came across the following error : Listener does not currently know of SID given in connect descripter....
tried to use 10GR2 which was specified and XE, the one of my database...
can someone please help me in this regard, urgently.
Thanks in Advance
Melvin

Hi Melvin,
I'm not sure which connection you are trying to make. You mention that you are trying to make a connection using the credentials in the application migration workshop pdf - which credentials are you talking about? Please note that any username/password/host/SID information used in the documentation is for demonstration purposes. You should supply the information that corresponds with your environment. Is "10GR2" the SID for your Oracle Database instance? Please ensure that you use the connection details that correspond with your own database instance.
If you are attempting to create a connection in Oracle SQL Developer to the newly migration Oracle schema, then ensure that the username/password combination you supply corresponds with the user created at the top of the generated DDL statements by the Migration Workbench e.g. if your database is called Northwind, then you can expect the username/password combination to be northwind/northwind.
If you are attempting to create a connection to the Oracle database for your Migration Repository, please ensure that the user you are connecting as has the required privileges necessary for carrying out a migration. Please refer to the Migration documentation in Oracle SQL Developer for further information.
I hope this helps.
Regards,
Hilary

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    I can save new connections to my existing connections.xml file, and I can save to a new connections file. I just can't save existing connections.
    I looked at the xml for the old version, and compared to the new version, and they are quite different. I tried deleting the system1.5.1.54.40\o.jdeveloper.db.connection.11.1.1.0.22.49.35 directory, so it would ask me about migrating old settings again, and this time I selected the directory for the previous version, 1.5.0.53.38. The connections weren't migrated. Apparently I can't save the existing connections because the old connections.xml format is not valid. How can I migrate/convert my old connections file to work in the new version. For all I know, this could have been an existing problem from when I converted from 1.2. This is just the first time I've had an occasion to change connection info, so I might be using a connections.xml file from 1.2.
    Here is one of my connection xml configs that I am unable to update:
    <Reference className="oracle.jdeveloper.db.adapter.DatabaseProvider" name="DB1">
    <Factory className="oracle.jdeveloper.db.adapter.DatabaseProviderFactory"/>
    <RefAddresses>
    <StringRefAddr addrType="subtype">
    <Contents>oraJDBC</Contents>
    </StringRefAddr>
    <StringRefAddr addrType="user">
    <Contents>myuser_id</Contents>
    </StringRefAddr>
    <StringRefAddr addrType="password">
    <Contents>myPassword</Contents>
    </StringRefAddr>
    <StringRefAddr addrType="SavePassword">
    <Contents>true</Contents>
    </StringRefAddr>
    <StringRefAddr addrType="DeployPassword">
    <Contents>false</Contents>
    </StringRefAddr>
    <StringRefAddr addrType="driver">
    <Contents>oracle.jdbc.OracleDriver</Contents>
    </StringRefAddr>
    <StringRefAddr addrType="customUrl">
    <Contents>jdbc:oracle:thin:@ (DESCRIPTION= (ADDRESS_LIST= (ADDRESS= (PROTOCOL=TCP) (HOST=NNN.NNN.NNN.NNN) (PORT=NNNNN) ) ) (CONNECT_DATA= (SID=db1) ) )</Contents>
    </StringRefAddr>
    <StringRefAddr addrType="oraDriverType">
    <Contents>thin</Contents>
    </StringRefAddr>
    </RefAddresses>
    </Reference>

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