Collection cannot be created using Xindice 1.1 under Tomcat 4.1.12.

[Avik Chatterjee]

Hi Everybody,
I am using Xindice 1.1 the database which is running under        Tomcat 
4.1.12. Also my java version is 1.3.1.

When I create a collection from a different context other than Xindice, it 
produces an Error:

     XML:DB Exception occured org.xmldb.api.base.XMLDBException: A 
connection to the
Database instance 'db' could not be created. Error: .

Pls send me the solution.
My code is given below:
======================================================================
import java.io.*;
import java.text.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import org.xmldb.api.base.*;
import org.xmldb.api.modules.*;
import org.xmldb.api.*;
// For the Xindice specific CollectionManager service
import org.apache.xindice.client.xmldb.services.*;
import org.apache.xindice.xml.dom.*;
public class CreateCollection extends HttpServlet {
   public void doGet(HttpServletRequest request, HttpServletResponse 
response)
        throws IOException, ServletException {
      org.xmldb.api.base.Collection col = null;
      try {
         String driver = "org.apache.xindice.client.xmldb.DatabaseImpl";
         Class c = Class.forName(driver);

         Database database = (Database) c.newInstance();
         org.xmldb.api.DatabaseManager.registerDatabase(database);
         col =
            
org.xmldb.api.DatabaseManager.getCollection("xmldb:xindice://./db/");

         String collectionName = "mycollection";
         CollectionManager service =
            (CollectionManager) col.getService("CollectionManager", 
"1.0");

         // Build up the Collection XML configuration.
         String collectionConfig =
            "<collection compressed=\"true\" name=\"" + collectionName + 
"\">" +
            "   <filer class=\"org.apache.xindice.core.filer.BTreeFiler\" 
gzip=\"true\"/>" +
            "</collection>";

         service.createCollection(collectionName,
               DOMParser.toDocument(collectionConfig));
         System.out.println("Collection " + collectionName + " created.");
      }
      catch (XMLDBException e) {
         System.err.println("XML:DB Exception occured " + e.toString());
      }
      catch (Exception exp) {
                        System.err.println("XML:DB Exception occured " + 
exp.toString());
          }
          finally {
                        try {
                                if (col != null) {
                                        col.close();
                                }
                        }
                        catch (XMLDBException e) {
                                System.err.println("XML:DB Exception occured " 
+ e.toString());
                        }
                        catch (Exception exp) {
                                System.err.println("XML:DB Exception occured " 
+ exp.toString());
                        }
          }
   }
}
Avik
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