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>E.153. Release 8.1.16</A
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><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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>E.153.1. Migration to Version 8.1.16</A
></H2
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> 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
>.
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>E.153.2. Changes</A
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><P
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><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
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><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)
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