How to use insert row with BLOB to Oracle when use connection pool?

Question

Hi, All,
I am writing a program to store files (mapped to be a column with BLOB datatype
in the table) to Oracle database.
But I always get java.lang.ClassCastException:weblogic.jdbc.rmi.SerialBlob
Here is my code, please help. Thanks a lot!!
String sqlNewRow = "insert into documents (id, companyid, updatedate, description,
document, addby, title) ";
sqlNewRow += "values (?, ?, TO_DATE(?, 'MM/DD/YY'), ?, EMPTY_BLOB(), ?,
con.setAutoCommit(false);
ps = con.prepareStatement(sqlNewRow);
ps.setInt(1, documentid);
ps.setInt(2, companyid);
ps.setString(3, updatedate);
ps.setString(4, description);
ps.setString(5, username);
ps.setString(6, filename);
ps.executeUpdate();
ps.close();
String sqlLockRow = "select document from documents where id = ? for update";
java.sql.PreparedStatement pst = con.prepareStatement(sqlLockRow);
pst.setInt(1, documentid);
java.sql.ResultSet rset = pst.executeQuery();
rset.next();
java.sql.Blob dbBlob = rset.getBlob(1);
out.println("it's=" + dbBlob.getClass());
OutputStream dbBlobOut = ((weblogic.jdbc.vendor.oracle.OracleThinBlob)dbBlob).getBinaryOutputStream();
dbBlobOut.write(oneString.getBytes());
dbBlobOut.close();
rset.close();
pst.close();

Answer 1

Have you defined
OutputStream dbBlobOut
as weblogic.jdbc.vendor.oralce.OracleThinBlob?
Mitesh
Almond wrote:
Hi, All,
I am writing a program to store files (mapped to be a column with BLOB datatype
in the table) to Oracle database.
But I always get java.lang.ClassCastException:weblogic.jdbc.rmi.SerialBlob
Here is my code, please help. Thanks a lot!!
String sqlNewRow = "insert into documents (id, companyid, updatedate, description,
document, addby, title) ";
sqlNewRow += "values (?, ?, TO_DATE(?, 'MM/DD/YY'), ?, EMPTY_BLOB(), ?,
con.setAutoCommit(false);
ps = con.prepareStatement(sqlNewRow);
ps.setInt(1, documentid);
ps.setInt(2, companyid);
ps.setString(3, updatedate);
ps.setString(4, description);
ps.setString(5, username);
ps.setString(6, filename);
ps.executeUpdate();
ps.close();
String sqlLockRow = "select document from documents where id = ? for update";
java.sql.PreparedStatement pst = con.prepareStatement(sqlLockRow);
pst.setInt(1, documentid);
java.sql.ResultSet rset = pst.executeQuery();
rset.next();
java.sql.Blob dbBlob = rset.getBlob(1);
out.println("it's=" + dbBlob.getClass());
OutputStream dbBlobOut = ((weblogic.jdbc.vendor.oracle.OracleThinBlob)dbBlob).getBinaryOutputStream();
dbBlobOut.write(oneString.getBytes());
dbBlobOut.close();
rset.close();
pst.close();