SQL PreparedStatement for update

I am testing a prototype DB2/400 connection/update class in QSH  - eventually to
be executed from a servlet.

 I am having a problem updating a field which is numeric 5 0 packed.

I am creating a SQL PreparedStatement object for performance reasons in the DB
connection method:

getSalesCnt = dbConnection.prepareStatement("SELECT CLIENTS "+
"FROM SALES WHERE DISTRICT = ? FOR UPDATE");

getSalesCnt.setCursorName("SAL");

setSalesCnt = dbConnection.prepareStatement("UPDATE SALES "+
"SET CLIENTS = ? WHERE CURRENT OF SAL");


In the update method I create the record set OK:

ResultSet rs = null;

getSalesCnt.setString(1, loc);
rs = getSalesCnt.executeQuery();

// Extract the count from the result set

rs.next();

BigDecimal count = rs.getBigDecimal("CLIENTS", 0);

However, the method throws an SQLException on the following line when I try to
increment the number of
clients by 1 :

 setSalesCnt.setString(1, count.add(new BigDecimal(1)).toString());

I tried an alternative line:

setSalesCnt.setString(1, count.add(new BigDecimal(1)));

But this also threw an SQLException.

What is the correct syntax for this update?

Any assistance very much appreciated.

Keith



















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