Same preparedstatement object for different queries.. ?

Question

Actually I m getting same preparedstatement object for many queries in a for loop..In this scenario its not working properly..Suppose like dis..
connection con.setAutoCommit(false);
PreparedStatement prepStmt = con.prepareStatement(
"UPDATE DEPT SET MGRNO=? WHERE DEPTNO=?");
prepStmt.setString(1,mgrnum1);
prepStmt.setString(2,deptnum1);
prepStmt.addBatch();
PreparedStatement prepStmt = con.prepareStatement(
"UPDATE EMP SET EMPNO=? WHERE DEPTNO=?");
prepStmt.setString(1,empno1);
prepStmt.setString(2,deptnum2);
prepStmt.addBatch();
Whether we can take same preparedstatement object for different query..??Its not giving any error but its not updating all the records but only the last one...
Any solution..

Answer 1

kriti123 wrote:
Actually I m getting same preparedstatement object for many queries in a for loop..In this scenario its not working properly..Suppose like dis..
Ignore all of the above.
You are using a batch.
There is a specific idiom for that. You create the statement once and then keep calling the appropriate methods on it to load and then execute the batch, and check errors.
When done you close it. If you need commit you are going to need to deal in blocks.
If you have a large volume of data then database import tools are very likely to be substantially faster.