PostgreSQL 9.0 Beta 4 Released (corrected announcement)

The fourth beta release for PostgreSQL version 9.0 is now available.
This beta contains numerous fixes and a few changes since beta3. As this
is likely to be the last beta release, please download, install, and
test it so that we can move toward final release of 9.0.

(Note: This is a corrected version of yesterday's announcement which
went out prematurely)

Beta4 contains primarily bug-fixes in response to user testing reports
since Beta3. The one significant user-facing change is to report \timing
information even when psql is being run in "quiet" mode. Fixes include:

* Report disk space error properly and do not load
.psqlrc when using pg_upgrade;
* Allow full SSL certificate verification when host and
hostaddr are both specified, backpatched to 8.4;
* Fix for pg_dump's handling of SQL/MED objects;
* Bugfix and performance improvement for scans of lossy
GIN index pointers;
* Fix for possible page corruption in ALTER TABLE .. SET TABLESPACE;
* Properly replay CREATE TABLESPACE during crash recovery;
* Cleanup subtransactions in FOR loops, and avoid deep
recursion when assigning XIDs to multiple levels of subtransactions
(to be backpatched to 8.0)

Unlike previous betas, there has been no system catalog change since
Beta3, so an initdb should not be required to upgrade test databases
from Beta3. Upgrading test databases from earlier versions or betas will
require an initdb, however, so we urge users to take the opportunity to
test upgrading their database using 9.0's pg_upgrade and report the results.

If you are able to help with beta testing, please see the testing
page: http://wiki.postgresql.org/wiki/HowToBetaTest

Betas are not stable and should never be used in production; they are
for testing only. A release candidate will be available for testing
soon.

Source code, as well as binary installers for many platforms, is
available from the PostgreSQL Web Site:
* Source
http://www.postgresql.org/ftp/source/v9.0beta4
* One-Click installer including Win64 binaries:
http://www.enterprisedb.com/products/pgdownload.do
* Binaries for other platforms:
http://www.postgresql.org/ftp/binary/v9.0beta4
* Release Notes:
http://developer.postgresql.org/pgdocs/postgres/release-9-0.html
* Participation in Testing:
http://www.postgresql.org/developer/beta