Hi Wu, we have included your code in a java test ang got the same problem.

Our installation is Oracle Database 11.2.0.1.0. Then we added the 'Semantic patch' 11_2_sem and followed the instructions to create a tablespace and the RDF/SEM network. Finally we create a model as [explained here|http://download.oracle.com/docs/cd/E11882_01/appdev.112/e11828/sdo_rdf_concepts.htm#CHDEDFFA] .

Some text in the exception is spanish; basically it seems to say 'fails inserting the literal value'... The rest of data in the app has been correctly inserted.

This is the java test:

public class PruebaOracleTest extends TestCase {

     String jdbcUrl = "jdbc:oracle:thin:user/pass@server:1521:bd";

     public void testInsertData() throws Exception {

          Oracle oracle = new Oracle(jdbcUrl, null, null);
          GraphOracleSem graph = new GraphOracleSem(oracle, "ARTICLES");
          ModelOracleSem model = new ModelOracleSem(graph);

          Model inMemoryJenaModel = ModelFactory.createDefaultModel();

          long lStartTime = System.currentTimeMillis();
          System.out.println("testCustomerMisc: start");
          Triple t = new Triple(Node.createURI("http://sub"), Node
                    .createURI("http://www.w3.org/2003/01/geo/wgs84_pos#long"),
                    Node.createLiteral("-5.9278863", null,
                              (RDFDatatype) XSDDatatype.XSDdouble));
          graph.add(t);
          graph.flushAdd();

          String queryString = "SELECT * " + "WHERE { "
                    + " ?subject ?predicate ?object . " + "} ";

          Query query = QueryFactory.create(queryString);
          QueryExecution qexec = QueryExecutionFactory.create(query, model);
          ResultSet results;
          {
               results = qexec.execSelect();
               ResultSetFormatter.out(System.out, results, query);
          }
     }

     public void testListTriples() throws Exception {

          Oracle oracle = new Oracle(jdbcUrl, null, null);
          GraphOracleSem graph = new GraphOracleSem(oracle, "ARTICLES");

          int cont = 0;
          ExtendedIterator it = graph.find(Triple.ANY);
          while (it.hasNext() && cont<100) {
               Triple t = (Triple) it.next();
               System.out.println(t.toString());
               cont++;
          }

          graph.close();
          oracle.dispose();
     }
     
     public void testCleanModel() throws Exception {

          Oracle oracle = new Oracle(jdbcUrl, null, null);
          GraphOracleSem graph = new GraphOracleSem(oracle, "ARTICLES");
          ModelOracleSem model = new ModelOracleSem(graph);

          model.removeAll();

          graph.close();
          oracle.dispose();
     }

}

And this the exception we get:

java.sql.SQLException: ORA-55303: Fallo en el constructor SDO_RDF_TRIPLE_S: Simple case: SQLERRM=ORA-55328: fallo al intentar insertar el valor literal "-5.9278863"^^<http://www.w3.org/2001/XMLSchema#double>
ORA-06512: en "MDSYS.MD", línea 1723
ORA-06512: en "MDSYS.MDERR", línea 17
ORA-06512: en "MDSYS.SDO_RDF_TRIPLE_S", línea 211

     at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:439)
     at oracle.jdbc.driver.T4CTTIoer.processError(T4CTTIoer.java:395)
     at oracle.jdbc.driver.T4C8Oall.processError(T4C8Oall.java:802)
     at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:436)
     at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:186)
     at oracle.jdbc.driver.T4C8Oall.doOALL(T4C8Oall.java:521)
     at oracle.jdbc.driver.T4CPreparedStatement.doOall8(T4CPreparedStatement.java:205)
     at oracle.jdbc.driver.T4CPreparedStatement.executeForRows(T4CPreparedStatement.java:1008)
     at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1307)
     at oracle.jdbc.driver.OraclePreparedStatement.sendBatch(OraclePreparedStatement.java:3753)
     at oracle.jdbc.driver.OraclePreparedStatementWrapper.sendBatch(OraclePreparedStatementWrapper.java:1140)
     at oracle.spatial.rdf.client.jena.GraphOracleSem.flushAdd(GraphOracleSem.java:1219)
     at org.fundacionctic.ogd.data.support.PruebaOracleTest.testInsertData(PruebaOracleTest.java:42)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:597)
     at junit.framework.TestCase.runTest(TestCase.java:154)
     at junit.framework.TestCase.runBare(TestCase.java:127)
     at junit.framework.TestResult$1.protect(TestResult.java:106)
     at junit.framework.TestResult.runProtected(TestResult.java:124)
     at junit.framework.TestResult.run(TestResult.java:109)
     at junit.framework.TestCase.run(TestCase.java:118)
     at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
     at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)

You got it right. Replacing the point with comma did the trick. Is there any way of solving the problem by some db configuration?