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<sect1 id="release-7-4-29">

<title>Release 7.4.29</title>

<note>

<title>Release date</title>

<simpara>2010-05-17</simpara>

</note>

<para>

This release contains a variety of fixes from 7.4.28.

For information about new features in the 7.4 major release, see

<xref linkend="release-7-4">.

</para>

<para>

The <productname>PostgreSQL</> community will stop releasing updates

for the 7.4.X release series in July 2010.

Users are encouraged to update to a newer release branch soon.

</para>

<sect2>

<title>Migration to Version 7.4.29</title>

<para>

A dump/restore is not required for those running 7.4.X.

However, if you are upgrading from a version earlier than 7.4.26,

see the release notes for 7.4.26.

</para>

</sect2>

<sect2>

<title>Changes</title>

<itemizedlist>

<listitem>

<para>

Do not allow an unprivileged user to reset superuser-only parameter

settings (Alvaro)

</para>

<para>

Previously, if an unprivileged user ran <literal>ALTER USER ... RESET

ALL</> for himself, or <literal>ALTER DATABASE ... RESET ALL</> for

a database he owns, this would remove all special parameter settings

for the user or database, even ones that are only supposed to be

changeable by a superuser. Now, the <command>ALTER</> will only

remove the parameters that the user has permission to change.

</para>

</listitem>

<listitem>

<para>

Avoid possible crash during backend shutdown if shutdown occurs

when a <literal>CONTEXT</> addition would be made to log entries (Tom)

</para>

<para>

In some cases the context-printing function would fail because the

current transaction had already been rolled back when it came time

to print a log message.

</para>

</listitem>

<listitem>

<para>

Update pl/perl's <filename>ppport.h</> for modern Perl versions

(Andrew)

</para>

</listitem>

<listitem>

<para>

Fix assorted memory leaks in pl/python (Andreas Freund, Tom)

</para>

</listitem>

<listitem>

<para>

Ensure that <filename>contrib/pgstattuple</> functions respond to cancel

interrupts promptly (Tatsuhito Kasahara)

</para>

</listitem>

<listitem>

<para>

Make server startup deal properly with the case that

<function>shmget()</> returns <literal>EINVAL</> for an existing

shared memory segment (Tom)

</para>

<para>

This behavior has been observed on BSD-derived kernels including OS X.

It resulted in an entirely-misleading startup failure complaining that

the shared memory request size was too large.

</para>

</listitem>

</itemizedlist>

</sect2>

</sect1>

<sect1 id="release-7-4-28">

<title>Release 7.4.28</title>