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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.262. Release 8.0.18</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-8-0-19.html" title="E.261. Release 8.0.19" /><link rel="next" href="release-8-0-17.html" title="E.263. Release 8.0.17" /></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.262. Release 8.0.18</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="release-8-0-19.html" title="E.261. Release 8.0.19">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-8-0-17.html" title="E.263. Release 8.0.17">Next</a></td></tr></table><hr></hr></div><div class="sect1" id="RELEASE-8-0-18"><div class="titlepage"><div><div><h2 class="title" style="clear: both">E.262. Release 8.0.18</h2></div></div></div><div class="toc"><dl class="toc"><dt><span class="sect2"><a href="release-8-0-18.html#id-1.11.6.266.4">E.262.1. Migration to Version 8.0.18</a></span></dt><dt><span class="sect2"><a href="release-8-0-18.html#id-1.11.6.266.5">E.262.2. Changes</a></span></dt></dl></div><p><strong>Release date: </strong>2008-09-22</p><p>
   This release contains a variety of fixes from 8.0.17.
   For information about new features in the 8.0 major release, see
   <a class="xref" href="release-8-0.html" title="E.280. Release 8.0">Section E.280</a>.
  </p><div class="sect2" id="id-1.11.6.266.4"><div class="titlepage"><div><div><h3 class="title">E.262.1. Migration to Version 8.0.18</h3></div></div></div><p>
    A dump/restore is not required for those running 8.0.X.
    However, if you are upgrading from a version earlier than 8.0.6,
    see <a class="xref" href="release-8-0-6.html" title="E.274. Release 8.0.6">Section E.274</a>.
   </p></div><div class="sect2" id="id-1.11.6.266.5"><div class="titlepage"><div><div><h3 class="title">E.262.2. Changes</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><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>
      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>
      <code class="command">ALTER COLUMN TYPE</code>, followed by re-use of a previously
      cached plan, could produce this type of situation.  The check protects
      against data corruption and/or crashes that could ensue.
     </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>
      Improve performance of writing very long log messages to syslog (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 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/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>
      Fix PL/Python to work with Python 2.5
     </p><p>
      This is a back-port of fixes made during the 8.2 development cycle.
     </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>
      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-8-0-19.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-8-0-17.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">E.261. Release 8.0.19 </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> E.263. Release 8.0.17</td></tr></table></div></body></html>