Io 异常: End of TNS data channel

Io 异常: End of TNS data channel,拜托大家看看那里错了。

Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
String url="jdbc:oracle:thin:@java:1521:java";
String user1="system";
String password="manager";
Connection conn_out= DriverManager.getConnection(url,user1,password);

Statement stmt_out = conn_out.createStatement();


Class.forName("sun.jdbc.odbc.JdbcOdbcDriver").newInstance();
Connection conn_in= DriverManager.getConnection("jdbc:odbc:huangpu");
Statement stmt_in = conn_in.createStatement();

ResultSet rs_in=stmt_in.executeQuery("select * from T_Image");

int imageID;
BufferedInputStream imageImage;
String imageName;
String imageType;
int imageSize;
int imageTableId;
String imageTable;
String imageSessionId;
String imageNotes;

String sql;
PreparedStatement pstmt=null;


InputStream ins;
FileOutputStream fouts;
byte b[] = new byte[5000];
FileInputStream fins;

int i;

while (rs_in.next())
{
imageID=rs_in.getInt("Image_Id");


ins=rs_in.getBinaryStream("Image_Image");

fouts=new FileOutputStream(new File("tempimage"));


for(i = ins.read(b); i != -1;i=ins.read(b))

{

fouts.write(b);

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