PostgreSQL 全系列版本更新，这些版本都是修复一个 DoS 漏洞 (CVE-2013-0255)，强烈建议所有用户立即升级。该漏洞允许用户通过调用一个内部函数并传递无效参数导致服务器崩溃。
同时该版本修复了 9.2 版本的存储过程使用动态查询可能会导致的性能下降问题，如果你正在使用 PL/pgSQL 的 EXECUTE 方法应该升级，此外还修复了由于 CREATE/DROP INDEX CONCURRENTLY 导致的间歇性崩溃的问题；另外还有复制相关的多个小问题。
而 PostgreSQL 8.3.23 将会是 8.3 版本的最后一次更新，以后 8.3 版本将不再更新。详情请参考 Versioning Policy.
其他改进内容包括：
Prevent unnecessary table scans during vacuuming
Prevent spurious cached plan error in PL/pgSQL
Allow sub-SELECTs to be subscripted
Prevent DROP OWNED from dropping databases or tablespaces
Make ECPG use translated messages
Allow PL/Python to use multi-table trigger functions (again) in 9.1 and 9.2
Fix several activity log management issues on Windows
Prevent autovacuum file truncation from being cancelled by deadlock_timeout
Make extensions build with the .exe suffix automatically on Windows
Fix concurrency issues with CREATE/DROP DATABASE
Reject out-of-range values in to_date() conversion function
Revert cost estimation for large indexes back to pre-9.2 behavior
Make pg_basebackup tolerate timeline switches
Cleanup leftover temp table entries during crash recovery
Prevent infinite loop when COPY inserts a large tuple into a table with a large fillfactor
Prevent integer overflow in dynahash creation
Make pg_upgrade work with INVALID indexes
Fix bugs in TYPE privileges
Allow Contrib installchecks to run in their own databases
Many documentation updates
Add new timezone "FET".
项目主页：http://www.postgresql.org/docs/current/static/release.html
下载地址：http://postgresql.org/download
来自:开源中国社区
