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Re: Problem when upgrade PostgreSQL 7.3.3 to PostgreSQL 8.0.3

From: Tjioe Ai Xin <xinxincute(at)gmail(dot)com>
To: Kris Jurka <books(at)ejurka(dot)com>
Cc: pgsql-jdbc(at)postgresql(dot)org
Subject: Re: Problem when upgrade PostgreSQL 7.3.3 to PostgreSQL 8.0.3
Date: 2005-11-21 04:39:15
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Lists: pgsql-jdbc
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

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