ORA-01460: 转换请求无法实施或不合理

Question

public static void main(String[] args) { // TODO Auto-generated method stub Connection con = ConnUtil.getConnection(); try { PreparedStatement ps =con.prepareStatement("insert into image values (image_seq.nextval,?)"); FileInputStream in = new FileInputStream("f:\\line.gif"); ps.setBinaryStream(1,in,in.available()); int i = ps.executeUpdate(); if(i>0){   System.out.println("插入成功"); }else{ System.out.println("插入失败"); } } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } }数据库连接成功java.sql.SQLException: ORA-01460: 转换请求无法实施或不合理 at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134) at oracle.jdbc.ttc7.TTIoer.processError(TTIoer.java:289) at oracle.jdbc.ttc7.Oall7.receive(Oall7.java:573) at oracle.jdbc.ttc7.TTC7Protocol.doOall7(TTC7Protocol.java:1891) at oracle.jdbc.ttc7.TTC7Protocol.parseExecuteFetch(TTC7Protocol.java:1093) at oracle.jdbc.driver.OracleStatement.executeNonQuery(OracleStatement.java:2047) at oracle.jdbc.driver.OracleStatement.doExecuteOther(OracleStatement.java:1940) at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:2709) at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:589) at DataTest.main(DataTest.java:21)如何解决呢？