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java.lang.NullPointerException at oracle.jdbc.driver.T4CNamedTypeAccessor.unmarshalOneRow(T4CNamedTypeAccessor.java:146) at oracle.jdbc.driver.T4CTTIrxd.unmarshal(T4CTTIrxd.java:919) at oracle.jdbc.driver.T4CTTIrxd.unmarshal(T4CTTIrxd.java:843) at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:619) at oracle.jdbc.driver.T4CCallableStatement.doOall8(T4CCallableStatement.java:211) at oracle.jdbc.driver.T4CCallableStatement.executeForRows(T4CCallableStatement.java:950) at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:1159) at oracle.jdbc.driver.OraclePreparedStatement.executeInternal(OraclePreparedStatement.java:3284) at oracle.jdbc.driver.OraclePreparedStatement.execute(OraclePreparedStatement.java:3389) at oracle.jdbc.driver.OracleCallableStatement.execute(OracleCallableStatement.java:4222) at org.jtdemo.CreateDataSet.callCreateDataset1(CreateDataSet.java:501) at org.jtdemo.Main.main(Main.java:44)