Re: Upgrade question, going from 8.3 to 9.1...

So, the driver issue was only in dealing with UNICODE issues? Is it true
that if we are always set with UNICODE client_encoding we should be fine?
(Or, another way to put it, we have already tested connection from the
existing java apps using the 8.3 driver to the new 9.1 database test
instance, and they worked 'just fine' for initial queries... is that where
this problem would manifest itself? Only in connecting?) Or was there
something else I missed in that thread?

2012/2/15 Dave Cramer <pg(at)fastcrypt(dot)com>

> My memory seems to be failing, yes, you will probably need a newer driver.
> Dave Cramer
>
> dave.cramer(at)credativ(dot)ca
> http://www.credativ.ca
>
>
>
> 2012/2/15 Віталій Тимчишин <tivv00(at)gmail(dot)com>:
> > I do remember some problems discussed with 9.1. AFAIR here it
> > is:
> http://grokbase.com/t/postgresql/pgsql-hackers/114jz3zdpb/jdbc-connections-to-9-1
> > According to the thread, driver was fixed, so you need 9.1 driver to
> handle
> > this problem.
> >
> >
> > 2012/2/15 Ned Wolpert <ned(dot)wolpert(at)gmail(dot)com>
> >>
> >> Folks-
> >>
> >> We're in the process of upgrading our postgresql install from 8.3 to
> >> 9.1.2. Our main application is using postgresql-8.3-606.jdbc3.jar
> against
> >> the existing postgresql database. (Java jdk1.6.0_29, Oracle's version,
> not
> >> OpenJDK. Its in use by hibernate. (Other Java applications use the
> database
> >> too, but mostly via hibernate or rbatis)
> >>
> >> My questions are:
> >> 1) is it necessary to upgrade the jdbc jar file to the 9.1 version, or
> is
> >> the 8.3 version 'upwards' compatible? If it is, can someone point out
> me to
> >> what I would fail in apps that did not upgrade?
> >> 2) Even though we are not using features from the JDBC4 version, should
> we
> >> still use the JDBC4 variant due to the 1.6 JDK version?
> >> 3) Is there any potential issues if an application is using the latest
> 9.1
> >> JDBC driver against postgresql 8.3.x database?
> >>
> >> Obviously, we're hoping not to require an updated jar file, and just
> delay
> >> the upgrade until the next application release. But I need to know if
> >> upgrading the JDBC driver with the database upgrade cannot be avoided.
> >>
> >> Thanks
> >>
> >> --
> >> Virtually, Ned Wolpert
> >> http://codehead.tumblr.com/
> >> http://codeheadsystems.wordpress.com/
> >>
> >> "Settle thy studies, Faustus, and begin..." --Marlowe
> >
> >
> >
> >
> > --
> > Best regards,
> > Vitalii Tymchyshyn
>

--
Virtually, Ned Wolpert
http://codehead.tumblr.com/
http://codeheadsystems.wordpress.com/

"Settle thy studies, Faustus, and begin..." --Marlowe