<application>pg_upgrade</application> (formerly called <application>pg_migrator</application>) allows data

stored in <productname>PostgreSQL</productname> data files to be upgraded to a later <productname>PostgreSQL</productname>

major version without the data dump/reload typically required for

major version upgrades, e.g. from 9.6.3 tothe current major release

of <productname>PostgreSQL</productname>.It is not required for minor version upgrades, e.g. from

9.6.2 to9.6.3.

major version upgrades, e.g. from 9.5.8 to9.6.4 or from 10.7 to 11.2.

It is not required for minor version upgrades, e.g. from 9.6.2 to 9.6.3

or from 10.1 to10.2.

</para>

<para>