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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>E.201. Release 8.3.4</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets V1.79.1" /><link rel="prev" href="release-8-3-5.html" title="E.200. Release 8.3.5" /><link rel="next" href="release-8-3-3.html" title="E.202. Release 8.3.3" /></head><body><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">E.201. Release 8.3.4</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="release-8-3-5.html" title="E.200. Release 8.3.5">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="release.html" title="Appendix E. Release Notes">Up</a></td><th width="60%" align="center">Appendix E. Release Notes</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 11.1 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="release-8-3-3.html" title="E.202. Release 8.3.3">Next</a></td></tr></table><hr></hr></div><div class="sect1" id="RELEASE-8-3-4"><div class="titlepage"><div><div><h2 class="title" style="clear: both">E.201. Release 8.3.4</h2></div></div></div><div class="toc"><dl class="toc"><dt><span class="sect2"><a href="release-8-3-4.html#id-1.11.6.205.4">E.201.1. Migration to Version 8.3.4</a></span></dt><dt><span class="sect2"><a href="release-8-3-4.html#id-1.11.6.205.5">E.201.2. Changes</a></span></dt></dl></div><p><strong>Release date: </strong>2008-09-22</p><p>
   This release contains a variety of fixes from 8.3.3.
   For information about new features in the 8.3 major release, see
   <a class="xref" href="release-8-3.html" title="E.205. Release 8.3">Section E.205</a>.
  </p><div class="sect2" id="id-1.11.6.205.4"><div class="titlepage"><div><div><h3 class="title">E.201.1. Migration to Version 8.3.4</h3></div></div></div><p>
    A dump/restore is not required for those running 8.3.X.
    However, if you are upgrading from a version earlier than 8.3.1,
    see <a class="xref" href="release-8-3-1.html" title="E.204. Release 8.3.1">Section E.204</a>.
   </p></div><div class="sect2" id="id-1.11.6.205.5"><div class="titlepage"><div><div><h3 class="title">E.201.2. Changes</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p>
      Fix bug in btree WAL recovery code (Heikki)
     </p><p>
      Recovery failed if the WAL ended partway through a page split operation.
     </p></li><li class="listitem"><p>
      Fix potential use of wrong cutoff XID for HOT page pruning (Alvaro)
     </p><p>
      This error created a risk of corruption in system
      catalogs that are consulted by <code class="command">VACUUM</code>: dead tuple versions
      might be removed too soon.  The impact of this on actual database
      operations would be minimal, since the system doesn't follow MVCC
      rules while examining catalogs, but it might result in transiently
      wrong output from <span class="application">pg_dump</span> or other client programs.
     </p></li><li class="listitem"><p>
      Fix potential miscalculation of <code class="structfield">datfrozenxid</code> (Alvaro)
     </p><p>
      This error may explain some recent reports of failure to remove old
      <code class="structname">pg_clog</code> data.
     </p></li><li class="listitem"><p>
      Fix incorrect HOT updates after <code class="structname">pg_class</code> is reindexed
      (Tom)
     </p><p>
      Corruption of <code class="structname">pg_class</code> could occur if <code class="literal">REINDEX
      TABLE pg_class</code> was followed in the same session by an <code class="literal">ALTER
      TABLE RENAME</code> or <code class="literal">ALTER TABLE SET SCHEMA</code> command.
     </p></li><li class="listitem"><p>
      Fix missed <span class="quote">“<span class="quote">combo cid</span>”</span> case (Karl Schnaitter)
     </p><p>
      This error made rows incorrectly invisible to a transaction in which they
      had been deleted by multiple subtransactions that all aborted.
     </p></li><li class="listitem"><p>
      Prevent autovacuum from crashing if the table it's currently
      checking is deleted at just the wrong time (Alvaro)
     </p></li><li class="listitem"><p>
      Widen local lock counters from 32 to 64 bits (Tom)
     </p><p>
      This responds to reports that the counters could overflow in
      sufficiently long transactions, leading to unexpected <span class="quote">“<span class="quote">lock is
      already held</span>”</span> errors.
     </p></li><li class="listitem"><p>
      Fix possible duplicate output of tuples during a GiST index scan (Teodor)
     </p></li><li class="listitem"><p>
      Regenerate foreign key checking queries from scratch when either
      table is modified (Tom)
     </p><p>
      Previously, 8.3 would attempt to replan the query, but would work from
      previously generated query text.  This led to failures if a
      table or column was renamed.
     </p></li><li class="listitem"><p>
      Fix missed permissions checks when a view contains a simple
      <code class="literal">UNION ALL</code> construct (Heikki)
     </p><p>
      Permissions for the referenced tables were checked properly, but not
      permissions for the view itself.
     </p></li><li class="listitem"><p>
      Add checks in executor startup to ensure that the tuples produced by an
      <code class="command">INSERT</code> or <code class="command">UPDATE</code> will match the target table's
      current rowtype (Tom)
     </p><p>
      This situation is believed to be impossible in 8.3, but it can happen in
      prior releases, so a check seems prudent.
     </p></li><li class="listitem"><p>
      Fix possible repeated drops during <code class="command">DROP OWNED</code> (Tom)
     </p><p>
      This would typically result in strange errors such as <span class="quote">“<span class="quote">cache
      lookup failed for relation NNN</span>”</span>.
     </p></li><li class="listitem"><p>
      Fix several memory leaks in XML operations (Kris Jurka, Tom)
     </p></li><li class="listitem"><p>
      Fix <code class="function">xmlserialize()</code> to raise error properly for
      unacceptable target data type (Tom)
     </p></li><li class="listitem"><p>
      Fix a couple of places that mis-handled multibyte characters in text
      search configuration file parsing (Tom)
     </p><p>
      Certain characters occurring in configuration files would always cause
      <span class="quote">“<span class="quote">invalid byte sequence for encoding</span>”</span> failures.
     </p></li><li class="listitem"><p>
      Provide file name and line number location for all errors reported
      in text search configuration files (Tom)
     </p></li><li class="listitem"><p>
      Fix <code class="literal">AT TIME ZONE</code> to first try to interpret its timezone
      argument as a timezone abbreviation, and only try it as a full timezone
      name if that fails, rather than the other way around as formerly (Tom)
     </p><p>
      The timestamp input functions have always resolved ambiguous zone names
      in this order.  Making <code class="literal">AT TIME ZONE</code> do so as well improves
      consistency, and fixes a compatibility bug introduced in 8.1:
      in ambiguous cases we now behave the same as 8.0 and before did,
      since in the older versions <code class="literal">AT TIME ZONE</code> accepted
      <span class="emphasis"><em>only</em></span> abbreviations.
     </p></li><li class="listitem"><p>
      Fix datetime input functions to correctly detect integer overflow when
      running on a 64-bit platform (Tom)
     </p></li><li class="listitem"><p>
      Prevent integer overflows during units conversion when displaying a
      configuration parameter that has units (Tom)
     </p></li><li class="listitem"><p>
      Improve performance of writing very long log messages to syslog (Tom)
     </p></li><li class="listitem"><p>
      Allow spaces in the suffix part of an LDAP URL in
      <code class="filename">pg_hba.conf</code> (Tom)
     </p></li><li class="listitem"><p>
      Fix bug in backwards scanning of a cursor on a <code class="literal">SELECT DISTINCT
      ON</code> query (Tom)
     </p></li><li class="listitem"><p>
      Fix planner bug that could improperly push down <code class="literal">IS NULL</code>
      tests below an outer join (Tom)
     </p><p>
      This was triggered by occurrence of <code class="literal">IS NULL</code> tests for
      the same relation in all arms of an upper <code class="literal">OR</code> clause.
     </p></li><li class="listitem"><p>
      Fix planner bug with nested sub-select expressions (Tom)
     </p><p>
      If the outer sub-select has no direct dependency on the parent query,
      but the inner one does, the outer value might not get recalculated
      for new parent query rows.
     </p></li><li class="listitem"><p>
      Fix planner to estimate that <code class="literal">GROUP BY</code> expressions yielding
      boolean results always result in two groups, regardless of the
      expressions' contents (Tom)
     </p><p>
      This is very substantially more accurate than the regular <code class="literal">GROUP
      BY</code> estimate for certain boolean tests like <em class="replaceable"><code>col</code></em>
      <code class="literal">IS NULL</code>.
     </p></li><li class="listitem"><p>
      Fix PL/pgSQL to not fail when a <code class="literal">FOR</code> loop's target variable
      is a record containing composite-type fields (Tom)
     </p></li><li class="listitem"><p>
      Fix PL/Tcl to behave correctly with Tcl 8.5, and to be more careful
      about the encoding of data sent to or from Tcl (Tom)
     </p></li><li class="listitem"><p>
      Improve performance of <code class="function">PQescapeBytea()</code> (Rudolf Leitgeb)
     </p></li><li class="listitem"><p>
      On Windows, work around a Microsoft bug by preventing
      <span class="application">libpq</span> from trying to send more than 64kB per system call
      (Magnus)
     </p></li><li class="listitem"><p>
      Fix <span class="application">ecpg</span> to handle variables properly in <code class="command">SET</code>
      commands (Michael)
     </p></li><li class="listitem"><p>
      Improve <span class="application">pg_dump</span> and <span class="application">pg_restore</span>'s
      error reporting after failure to send a SQL command (Tom)
     </p></li><li class="listitem"><p>
      Fix <span class="application">pg_ctl</span> to properly preserve postmaster
      command-line arguments across a <code class="literal">restart</code> (Bruce)
     </p></li><li class="listitem"><p>
      Fix erroneous WAL file cutoff point calculation in
      <span class="application">pg_standby</span> (Simon)
     </p></li><li class="listitem"><p>
      Update time zone data files to <span class="application">tzdata</span> release 2008f (for
      DST law changes in Argentina, Bahamas, Brazil, Mauritius, Morocco,
      Pakistan, Palestine, and Paraguay)
     </p></li></ul></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="release-8-3-5.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="release.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="release-8-3-3.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">E.200. Release 8.3.5 </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> E.202. Release 8.3.3</td></tr></table></div></body></html>