Earlier update releases attempted to fix an issue in PostgreSQL 9.3 and 9.4
with "multixact wraparound", but failed to account for issues doing multixact
cleanup during crash recovery. This could cause servers to be unable to restart
after a crash. As such, all users of 9.3 and 9.4 should apply this update as
soon as possible.
URL: http://www.postgresql.org/about/news/1592/
The update is mostly to fix the file persmission problem described
in the URL below. You might want to wait until next upgrade, depending
on you local configuration.
URL: http://www.postgresql.org/about/news/1590/
Data Corruption Fix
For users of PostgreSQL versions 9.3 or 9.4, this release fixes a problem where
the database will fail to protect against "multixact wraparound", resulting in
data corruption or loss. Users with a high transaction rate (1 million or more
per hour) in a database with many foreign keys are especially vulnerable. We
strongly urge all users of 9.4 and 9.3 to update their installations in the
next few days.
Users of versions 9.2 and earlier are not affected by this issue.
Security: fc38cd83-00b3-11e5-8ebd-0026551a22dc
"Revert the change from readline to libedit, and instead make libedit optional.",
I failed to get the PORTREVISION set correctly. Fixed now.
PR: ports/197362
This update fixes multiple security issues reported in PostgreSQL over the past
few months. All of these issues require prior authentication, and some require
additional conditions, and as such are not considered generally urgent.
However, users should examine the list of security holes patched below in case
they are particularly vulnerable.
Security: CVE-2015-0241,CVE-2015-0242,CVE-2015-0243,
CVE-2015-0244,CVE-2014-8161
Major enhancements in PostgreSQL 9.4 include:
Add jsonb, a more capable and efficient data type for storing JSON data
Add new SQL command ALTER SYSTEM for changing postgresql.conf configuration
file entries
Reduce lock strength for some ALTER TABLE commands
Allow materialized views to be refreshed without blocking concurrent reads
Add support for logical decoding of WAL data, to allow database changes to be
streamed out in a customizable format
Allow background worker processes to be dynamically registered, started and
terminated The above items are explained in more detail in the sections below.
URL: http://www.postgresql.org/docs/9.4/static/release-9-4.html
release of PostgreSQL 9.4, the latest version of the world's leading
open source database, is available today. This beta contains previews
of all of the features which will be available in version 9.4, and is
ready for testing by the worldwide PostgreSQL community. Please
download, test, and report what you find.
Major Features
--------------
The new major features available for testing in this beta include:
* JSONB: 9.4 includes the new JSONB "binary JSON" type. This new
storage format for document data is higher-performance, and comes with
indexing, functions and operators for manipulating JSON data.
* Replication: The new Data Change Streaming API allows decoding and
transformation of the replication stream. This lays the foundation
for new replication tools that support high-speed and more flexible
replication and scale-out solutions.
* Materialized Views with "Refresh Concurrently", which permit
fast-response background summary reports for complex data.
* ALTER SYSTEM SET, which enables modifications to postgresql.conf
from the SQL command line and from remote clients, easing
administration tasks.
