is there only one row in that table?  if so, you can lock the table
itself. 

try it without the nowait...



--- Stefan Jakobsson <[EMAIL PROTECTED]> wrote:
> Having a small problem I need some help with...
> 
> The problem is trying to lock a row on a parameter table for an
> application.
> 
> The thing we need to do is following:
> 
> Read the value in one row. LOCK that row for other users, increase
> the value
> with one
> update the row with the new value and release if for access to other
> users.
> 
> We are trying to use the following SQL statement.
> 
> SELECT medlnr FROM parametrar FOR UPDATE OF medlnr NOWAIT;
> 
> But the thing is that when we try, anyone can head on in and select
> the same
> value
> and even make an update of that row...
> 
> What am I missing here?
> 
> Regards,
> Stefan Jakobsson
> Programmer
> Arel-Data 
> -- 
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> -- 
> Author: Stefan Jakobsson
>   INET: [EMAIL PROTECTED]
> 
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