Bug 177091 Can't access stored procedure defined in Oracle Package
1.setup an oracle connection 2.try to call a stored procedure defined in package
data/org.eclipse.birt.report.data.oda.jdbc.ui/src/org/eclipse/birt/report/data/oda/jdbc/ui/editors/SQLDataSetEditorPage.java
* 
	 */
	private void initializeControl( )
	{
		isPageInitialization = true;
		
		initializeSchemaPrefetchConfig( );
		
		DEFAULT_MESSAGE = JdbcPlugin.getResourceString( "dataset.new.query" );
		setMessage( DEFAULT_MESSAGE, IMessageProvider.NONE );
		refreshPage( );
		prepareUI( );
	}
	/**
	 * 
	 *
	 */
	private void initializeSchemaPrefetchConfig( )
	{
		if ( !JdbcPlugin.getDefault( )
				.getPluginPreferences( )
				.contains( DateSetPreferencePage.SCHEMAS_PREFETCH_CONFIG ) )
		{
			JdbcPlugin.getDefault( )
					.getPluginPreferences( )
					.setValue( DateSetPreferencePage.SCHEMAS_PREFETCH_CONFIG,
							ENABLED );
		}
	}
	/**