title: JDeveloper DB-based MDS-connection issue
body: <p>During creating of DB-based MDS-connection in JDeveloper list of partitions is empty.
  I have tried to install Oracle SOA Suite 11g on both Oracle and SQL Server and have this issue in JDeveloper with different jdbc-drivers.
  Of course, MDS schemas in database are created using Oracle Repository Creation utility and both sys/sa and DEV_MDS users were tried.</p>
  
  <p>I have looked into JDeveloper Messages tab and see such error:</p>
  
  <p>WARNING: Error reading db partitions for connection name Connection1. Reason : MDS-00003: error connecting to the database<br>
  Unable to start the Universal Connection Pool: oracle.ucp.UniversalConnectionPoolException: Error during pool creation in Universal Connection Pool Manager MBean: oracle.ucp.UniversalConnectionPoolException: Error during pool creation in Universal Connection Pool Manager: java.sql.SQLException: Invalid Universal Connection Pool configuration: java.sql.SQLException: Unable to create factory class instance with provided factory class name: java.lang.ClassNotFoundException: com.microsoft.sqlserver.jdbc.SQLServerXADataSource<br>
  Error during pool creation in Universal Connection Pool Manager MBean: oracle.ucp.UniversalConnectionPoolException: Error during pool creation in Universal Connection Pool Manager: java.sql.SQLException: Invalid Universal Connection Pool configuration: java.sql.SQLException: Unable to create factory class instance with provided factory class name: java.lang.ClassNotFoundException: com.microsoft.sqlserver.jdbc.SQLServerXADataSource</p>
  
  <p>It is strange, because it is class from sqljdbc4.jar which I have specified as JDBC-driver (Microsoft SQL Server JDBC Driver 3.0).</p>
  
  <p>So I tried jTDS SQL Server driver and received such error:</p>
  
  <p>Apr 26, 2011 9:52:01 PM oracle.tip.tools.ide.common.resourcepalette.adapter.mds.DBConnectionInfo
  WARNING: Error reading db partitions for connection name Connection2. Reason : </p>