PostgreSQL 15 RC 2 Released!

The PostgreSQL Global Development Group announces that the second release
candidate of PostgreSQL 15 is now available for download. As a release
candidate, PostgreSQL 15 RC 2 will be mostly identical to the initial release of
PostgreSQL 15, though some more fixes may be applied prior to the general
availability of PostgreSQL 15.

The planned date for the general availability of PostgreSQL 15 is still
October 13, 2022, but may be pushed to October 20, 2022 based on what issues are
reported. Please see the "Release Schedule" section for more details.

Upgrading to PostgreSQL 15 RC 2
-------------------------------

To upgrade to PostgreSQL 15 RC 2 from earlier versions of PostgreSQL, you will
need to use a major version upgrade strategy, e.g. `pg_upgrade` or
`pg_dump` / `pg_restore`. For more information, please visit the documentation
section on [upgrading](https://www.postgresql.org/docs/15/static/upgrading.html):

[https://www.postgresql.org/docs/15/static/upgrading.html](https://www.postgresql.org/docs/15/static/upgrading.html)

Changes Since 15 RC 1
----------------------

Several bug fixes were applied for PostgreSQL 15 during the RC 1 period. These
include:

* Reverting the "optimized order of `GROUP BY` keys" feature.
* Fix behavior for the `\g` command in `psql` with multi-command strings.
* Fix memory leak in single-column sorts.
* Fix for behavior of `PQsslAttribute` libpq function.

For a detailed list of fixes, please visit the
[open items](https://wiki.postgresql.org/wiki/PostgreSQL_15_Open_Items#resolved_before_15rc2)
page.

Release Schedule
----------------

This is the second release candidate for PostgreSQL 15. Unless an issue is
discovered that warrants a delay or to produce an additional release candidate,
PostgreSQL 15 should be made generally available on October 13, 2022 or
October 20, 2022.

For further information please see the
[Beta Testing](https://www.postgresql.org/developer/beta/) page.

Links
-----

* [Download](https://www.postgresql.org/download/)
* [Beta Testing Information](https://www.postgresql.org/developer/beta/)
* [PostgreSQL 15 RC 2 Release Notes](https://www.postgresql.org/docs/15/static/release-15.html)
* [PostgreSQL 15 Open Issues](https://wiki.postgresql.org/wiki/PostgreSQL_15_Open_Items)
* [Submit a Bug](https://www.postgresql.org/account/submitbug/)
* [Follow @postgresql on Twitter](https://www.twitter.com/postgresql)