On Wednesday 10 May 2017 17:13:50 Ron Ben wrote:
> Not possible
> https://www.postgresql.org/download/linux/debian/
>
> To upgrade I do: apt-get install postgresql-9.3
> There is no way to "roll back" from here.
> I can not choose which version to install, it install the latest version
> packed for debian. Currently its 9.3.16
> The docuntation says that upgrading minor version is just "replacing the
> executables", so there has to be a way to save them on the side for roll
> back. If not, the documntation is insuffecent. We all know that sometimes
> even the smallest change can cause troubles.
>
Download the old packages from the repository. You can use dpkg to manually
downgrade them if needed. You can also use dpkg to get a list of the files in
any particular package if you want to save them manually.
Or you should ask your system administrator for help.
This is not a PostgreSQL issue and that's why it (and many other things) are
not in the docs. Every version of Linux uses a different package manager. The
system administrator needs to know how to use it.