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>E.153. Release 8.1.16</A
></H1
><DIV
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><P
><B
>Release date: </B
>2009-02-02</P
></DIV
><P
>   This release contains a variety of fixes from 8.1.15.
   For information about new features in the 8.1 major release, see
   <A
HREF="release-8-1.html"
>Section E.169</A
>.
  </P
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><A
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>E.153.1. Migration to Version 8.1.16</A
></H2
><P
>    A dump/restore is not required for those running 8.1.X.
    However, if you are upgrading from a version earlier than 8.1.15,
    see <A
HREF="release-8-1-15.html"
>Section E.154</A
>.
   </P
></DIV
><DIV
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><H2
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><A
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>E.153.2. Changes</A
></H2
><P
></P
><UL
><LI
><P
>      Fix crash in autovacuum (Alvaro)
     </P
><P
>      The crash occurs only after vacuuming a whole database for
      anti-transaction-wraparound purposes, which means that it occurs
      infrequently and is hard to track down.
     </P
></LI
><LI
><P
>      Improve handling of URLs in <CODE
CLASS="FUNCTION"
>headline()</CODE
> function (Teodor)
     </P
></LI
><LI
><P
>      Improve handling of overlength headlines in <CODE
CLASS="FUNCTION"
>headline()</CODE
>
      function (Teodor)
     </P
></LI
><LI
><P
>      Prevent possible Assert failure or misconversion if an encoding
      conversion is created with the wrong conversion function for the
      specified pair of encodings (Tom, Heikki)
     </P
></LI
><LI
><P
>      Avoid unnecessary locking of small tables in <TT
CLASS="COMMAND"
>VACUUM</TT
>
      (Heikki)
     </P
></LI
><LI
><P
>      Ensure that the contents of a holdable cursor don't depend on the
      contents of TOAST tables (Tom)
     </P
><P
>      Previously, large field values in a cursor result might be represented
      as TOAST pointers, which would fail if the referenced table got dropped
      before the cursor is read, or if the large value is deleted and then
      vacuumed away.  This cannot happen with an ordinary cursor,
      but it could with a cursor that is held past its creating transaction.
     </P
></LI
><LI
><P
>      Fix uninitialized variables in <TT
CLASS="FILENAME"
>contrib/tsearch2</TT
>'s
      <CODE
CLASS="FUNCTION"
>get_covers()</CODE
> function (Teodor)
     </P
></LI
><LI
><P
>      Fix <SPAN
CLASS="APPLICATION"
>configure</SPAN
> script to properly report failure when
      unable to obtain linkage information for PL/Perl (Andrew)
     </P
></LI
><LI
><P
>      Make all documentation reference <TT
CLASS="LITERAL"
>pgsql-bugs</TT
> and/or
      <TT
CLASS="LITERAL"
>pgsql-hackers</TT
> as appropriate, instead of the
      now-decommissioned <TT
CLASS="LITERAL"
>pgsql-ports</TT
> and <TT
CLASS="LITERAL"
>pgsql-patches</TT
>
      mailing lists (Tom)
     </P
></LI
><LI
><P
>      Update time zone data files to <SPAN
CLASS="APPLICATION"
>tzdata</SPAN
> release 2009a (for
      Kathmandu and historical DST corrections in Switzerland, Cuba)
     </P
></LI
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文件操作 - release-8-1-16.html

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