Re: Problem when upgrade PostgreSQL 7.3.3 to PostgreSQL 8.0.3

Dear Kris,

Thank you for your answer. It helps me a lot.

Best Regards,
Xin Xin

On Saturday 19 November 2005 01:25, you wrote:
>
> On Fri, 18 Nov 2005, Tjioe Ai Xin wrote:
>
> > I have web application which is run using PostgreSQL 7.3.3 and JDBC
> > Driver pg3jdbc3.jar. But when I try to update to PostgreSQL 8.0.3 and
> > using JDBC Driver postgresql-8.0-314.jdbc3.jar, I got error messages:
>
> > 1. Cannot change transaction isolation level in the middle of a transaction.
> >     --> Does changing transaction isolation level in the middle of a
> > transaction no longer supported?
>
> This was never supported, but simply did not report the error in the past.
> Transaction isolation must be set before the first statement of the
> transaction is executed.  The server must know in advance what type of
> snapshot it must take when the transaction starts.  It cannot go back and
> time and retake it if the isolation level changes mid-transaction.
>
> > 2. ERROR: operator does not exist: bigint / character varying
> >     --> I don't understand this error message because all my query
> > statements runs well in the shell.
> >          But when I call my query statement, I got the message.
>
> I'm guessing you are using PreparedStatement.setString for a numeric
> value.  Do you have a query like "WHERE colname / ? " ?  You need to use a
> different setXXX method that takes a numeric value.
>
> Kris Jurka
>