<sect2>

<title>Upgrading from previous releases</title>

<para>When upgrading from previous releases of Postgres Pro or from

vanilla PostgreSQL 9.5.x, some catalog changes should be applied.

</para>

<para>If you use binary packages, and your database is in the default

location, this upgrade should be performed automatically. If you've

compiled Postgres Pro from source or create your database in

non-default location, running <literal>initdb</literal> manually, you

should run <literal>pgpro_upgrade</literal> script provided in this

distribution.

</para>

<para>Before running script, you should stop postgres service. Script

should be run as user, owning the database (typically postgres) and

PGDATA environment variable should be set to the directory where

database resides.

</para>

</sect2>