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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.186. Release 8.3.19</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-8-3-20.html" title="E.185. Release 8.3.20" /><link rel="next" href="release-8-3-18.html" title="E.187. Release 8.3.18" /></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.186. Release 8.3.19</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="release-8-3-20.html" title="E.185. Release 8.3.20">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-8-3-18.html" title="E.187. Release 8.3.18">Next</a></td></tr></table><hr></hr></div><div class="sect1" id="RELEASE-8-3-19"><div class="titlepage"><div><div><h2 class="title" style="clear: both">E.186. Release 8.3.19</h2></div></div></div><div class="toc"><dl class="toc"><dt><span class="sect2"><a href="release-8-3-19.html#id-1.11.6.190.4">E.186.1. Migration to Version 8.3.19</a></span></dt><dt><span class="sect2"><a href="release-8-3-19.html#id-1.11.6.190.5">E.186.2. Changes</a></span></dt></dl></div><p><strong>Release date: </strong>2012-06-04</p><p>
   This release contains a variety of fixes from 8.3.18.
   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-1.11.6.190.4"><div class="titlepage"><div><div><h3 class="title">E.186.1. Migration to Version 8.3.19</h3></div></div></div><p>
    A dump/restore is not required for those running 8.3.X.
   </p><p>
    However, if you are upgrading from a version earlier than 8.3.17,
    see <a class="xref" href="release-8-3-17.html" title="E.188. Release 8.3.17">Section E.188</a>.
   </p></div><div class="sect2" id="id-1.11.6.190.5"><div class="titlepage"><div><div><h3 class="title">E.186.2. Changes</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p>
      Fix incorrect password transformation in
      <code class="filename">contrib/pgcrypto</code>'s DES <code class="function">crypt()</code> function
      (Solar Designer)
     </p><p>
      If a password string contained the byte value <code class="literal">0x80</code>, the
      remainder of the password was ignored, causing the password to be much
      weaker than it appeared.  With this fix, the rest of the string is
      properly included in the DES hash.  Any stored password values that are
      affected by this bug will thus no longer match, so the stored values may
      need to be updated.  (CVE-2012-2143)
     </p></li><li class="listitem"><p>
      Ignore <code class="literal">SECURITY DEFINER</code> and <code class="literal">SET</code> attributes for
      a procedural language's call handler (Tom Lane)
     </p><p>
      Applying such attributes to a call handler could crash the server.
      (CVE-2012-2655)
     </p></li><li class="listitem"><p>
      Allow numeric timezone offsets in <code class="type">timestamp</code> input to be up to
      16 hours away from UTC (Tom Lane)
     </p><p>
      Some historical time zones have offsets larger than 15 hours, the
      previous limit.  This could result in dumped data values being rejected
      during reload.
     </p></li><li class="listitem"><p>
      Fix timestamp conversion to cope when the given time is exactly the
      last DST transition time for the current timezone (Tom Lane)
     </p><p>
      This oversight has been there a long time, but was not noticed
      previously because most DST-using zones are presumed to have an
      indefinite sequence of future DST transitions.
     </p></li><li class="listitem"><p>
      Fix <code class="type">text</code> to <code class="type">name</code> and <code class="type">char</code> to <code class="type">name</code>
      casts to perform string truncation correctly in multibyte encodings
      (Karl Schnaitter)
     </p></li><li class="listitem"><p>
      Fix memory copying bug in <code class="function">to_tsquery()</code> (Heikki Linnakangas)
     </p></li><li class="listitem"><p>
      Fix slow session startup when <code class="structname">pg_attribute</code> is very large
      (Tom Lane)
     </p><p>
      If <code class="structname">pg_attribute</code> exceeds one-fourth of
      <code class="varname">shared_buffers</code>, cache rebuilding code that is sometimes
      needed during session start would trigger the synchronized-scan logic,
      causing it to take many times longer than normal.  The problem was
      particularly acute if many new sessions were starting at once.
     </p></li><li class="listitem"><p>
      Ensure sequential scans check for query cancel reasonably often (Merlin
      Moncure)
     </p><p>
      A scan encountering many consecutive pages that contain no live tuples
      would not respond to interrupts meanwhile.
     </p></li><li class="listitem"><p>
      Ensure the Windows implementation of <code class="function">PGSemaphoreLock()</code>
      clears <code class="varname">ImmediateInterruptOK</code> before returning (Tom Lane)
     </p><p>
      This oversight meant that a query-cancel interrupt received later
      in the same query could be accepted at an unsafe time, with
      unpredictable but not good consequences.
     </p></li><li class="listitem"><p>
      Show whole-row variables safely when printing views or rules
      (Abbas Butt, Tom Lane)
     </p><p>
      Corner cases involving ambiguous names (that is, the name could be
      either a table or column name of the query) were printed in an
      ambiguous way, risking that the view or rule would be interpreted
      differently after dump and reload.  Avoid the ambiguous case by
      attaching a no-op cast.
     </p></li><li class="listitem"><p>
      Ensure autovacuum worker processes perform stack depth checking
      properly (Heikki Linnakangas)
     </p><p>
      Previously, infinite recursion in a function invoked by
      auto-<code class="command">ANALYZE</code> could crash worker processes.
     </p></li><li class="listitem"><p>
      Fix logging collector to not lose log coherency under high load (Andrew
      Dunstan)
     </p><p>
      The collector previously could fail to reassemble large messages if it
      got too busy.
     </p></li><li class="listitem"><p>
      Fix logging collector to ensure it will restart file rotation
      after receiving <span class="systemitem">SIGHUP</span> (Tom Lane)
     </p></li><li class="listitem"><p>
      Fix PL/pgSQL's <code class="command">GET DIAGNOSTICS</code> command when the target
      is the function's first variable (Tom Lane)
     </p></li><li class="listitem"><p>
      Fix several performance problems in <span class="application">pg_dump</span> when
      the database contains many objects (Jeff Janes, Tom Lane)
     </p><p>
      <span class="application">pg_dump</span> could get very slow if the database contained
      many schemas, or if many objects are in dependency loops, or if there
      are many owned sequences.
     </p></li><li class="listitem"><p>
      Fix <code class="filename">contrib/dblink</code>'s <code class="function">dblink_exec()</code> to not leak
      temporary database connections upon error (Tom Lane)
     </p></li><li class="listitem"><p>
      Update time zone data files to <span class="application">tzdata</span> release 2012c
      for DST law changes in Antarctica, Armenia, Chile, Cuba, Falkland
      Islands, Gaza, Haiti, Hebron, Morocco, Syria, and Tokelau Islands;
      also historical corrections for Canada.
     </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-8-3-20.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-8-3-18.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">E.185. Release 8.3.20 </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> E.187. Release 8.3.18</td></tr></table></div></body></html>