 Exception in thread "main" java.sql.SQLException:     at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:000)     at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:000)     at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:000)     at oracle.jdbc.dbaccess.DBError.throwUnsupportedFeatureSqlException(DBError.java:000)     at oracle.jdbc.d