On Wed, Jul 27, 2016 at 12:51:40PM -0400, Rakesh Kumar wrote:
> On Wed, Jul 27, 2016 at 12:47 PM, Bruce Momjian <bruce@momjian.us> wrote:
>
> > Yes. I was saying I don't know how to improve pg_upgrade to address it.
>
> This problem is there even in oracle/db2/sqlserver. None of them allow
> rollback to the lower version
> unless it is a minor version upgrade. Major version upgrade almost
> definitely involves change in transaction log
> (WAL) structure and hence no rollback.
Oh, good to know.
--
Bruce Momjian <bruce@momjian.us> http://momjian.us
EnterpriseDB http://enterprisedb.com
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