<Paul.Weiler@itdz-berlin.de> writes:
> as far as I can see, I found a bug with the tool pg_upgrade under PostgreSQL 9.6.2. After upgrading from Version
9.5.3to 9.6.2 I still couldn't start the database with the normal command pg_ctl start.
> ...
> Only after using the path /usr/pgsql-9.6/bin/pg_ctl start it worked correctly. As far as I could find out, it's a
problemwith a softlink. The softlink pgsql-pg_ctl shows still to "/usr/pgsql-9.5/bin/pg_ctl". The faulty softlink is
locatedin /etc/alternatives.
pg_upgrade, per se, doesn't and cannot know about such things ---
/etc/alternatives is a platform-specific concept and any symlinks placed
there must have been created by a platform-specific packaging of Postgres.
I expect that the packager provided some upgrade instructions that would
involve running pg_upgrade as one step. Try looking into whatever README
or similar files were included in your Postgres RPMs.
If you were following a package-specific upgrade recipe, then this is a
bug in the recipe --- but you'd need to report it to the packager, not
to the PG project.
regards, tom lane
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