How to insert and retrieve clob

[jaya repaka]

Hi All,
In my application ,one datatype has been changed to clob(5000) from varchar2(4000).I wrote the following code to insert and select..(for Clob)

String value=requestComment.getComment();
StringReader r = new StringReader((String)value );
preparedStatement.setCharacterStream( 4, r, ((String)value).length());

// for retrieve(select)
myClob = resultSet.getClob(COMMENT_X);
if(myClob!=null){
Reader clobData = myClob.getCharacterStream();
CharArrayWriter writer=new CharArrayWriter();
int i=-1;
while((i = clobData.read()) !=-1) {
//writer.write(i)

I gave morethan 4000 character as input ,I am getting the following the error..


Mapping the following SQLException, with ErrorCode 17,410 and SQLState <null>, to a StaleConnectionException: java.sql.SQLException: No more data to read from socket

Please let me know if someone can help me..


Thanks in advance...

Thanks
Jaya

[Karthikeyan Rajendraprasad]

in order to use setClob you need to have a Clob object. it can be created as mentioned below

 
  oracle.sql.CLOB b = oracle.sql.CLOB.createTemporary((oracle.jdbc.driver.OracleConnection) conn, true, oracle.sql.CLOB.DURATION_SESSION);
b.open(oracle.sql.CLOB.MODE_READWRITE);
OutputStream out = b.getAsciiOutputStream();
out.write(txt.getBytes());
out.close();
 
 

set it as

 pstmt.setObject(colno, b, java.sql.Types.CLOB)