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>Appendix E. Release Notes</TD
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><A
NAME="RELEASE-8-1-2"
>E.167. Release 8.1.2</A
></H1
><DIV
CLASS="FORMALPARA"
><P
><B
>Release date: </B
>2006-01-09</P
></DIV
><P
>   This release contains a variety of fixes from 8.1.1.
   For information about new features in the 8.1 major release, see
   <A
HREF="release-8-1.html"
>Section E.169</A
>.
  </P
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN136815"
>E.167.1. Migration to Version 8.1.2</A
></H2
><P
>    A dump/restore is not required for those running 8.1.X.
    However, you might need to <TT
CLASS="COMMAND"
>REINDEX</TT
> indexes on textual
    columns after updating, if you are affected by the locale or
    <SPAN
CLASS="APPLICATION"
>plperl</SPAN
> issues described below.
   </P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN136820"
>E.167.2. Changes</A
></H2
><P
></P
><UL
><LI
><P
>Fix Windows code so that postmaster will continue rather
than exit if there is no more room in ShmemBackendArray (Magnus)</P
><P
>The previous behavior could lead to a denial-of-service situation if too
many connection requests arrive close together.  This applies
<SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>only</I
></SPAN
> to the Windows port.</P
></LI
><LI
><P
>Fix bug introduced in 8.0 that could allow ReadBuffer
to return an already-used page as new, potentially causing loss of
recently-committed data (Tom)</P
></LI
><LI
><P
>Fix for protocol-level Describe messages issued
outside a transaction or in a failed transaction (Tom)</P
></LI
><LI
><P
>Fix character string comparison for locales that consider
different character combinations as equal, such as Hungarian (Tom)</P
><P
>This might require <TT
CLASS="COMMAND"
>REINDEX</TT
> to fix existing indexes on
textual columns.</P
></LI
><LI
><P
>Set locale environment variables during postmaster startup
to ensure that <SPAN
CLASS="APPLICATION"
>plperl</SPAN
> won't change the locale later</P
><P
>This fixes a problem that occurred if the <SPAN
CLASS="APPLICATION"
>postmaster</SPAN
> was
started with environment variables specifying a different locale than what
<SPAN
CLASS="APPLICATION"
>initdb</SPAN
> had been told.  Under these conditions, any use of
<SPAN
CLASS="APPLICATION"
>plperl</SPAN
> was likely to lead to corrupt indexes.  You might need
<TT
CLASS="COMMAND"
>REINDEX</TT
> to fix existing indexes on
textual columns if this has happened to you.</P
></LI
><LI
><P
>Allow more flexible relocation of installation
directories (Tom)</P
><P
>Previous releases supported relocation only if all installation
directory paths were the same except for the last component.</P
></LI
><LI
><P
>Prevent crashes caused by the use of
<TT
CLASS="LITERAL"
>ISO-8859-5</TT
> and <TT
CLASS="LITERAL"
>ISO-8859-9</TT
> encodings
(Tatsuo)</P
></LI
><LI
><P
>Fix longstanding bug in strpos() and regular expression
handling in certain rarely used Asian multi-byte character sets (Tatsuo)</P
></LI
><LI
><P
>Fix bug where COPY CSV mode considered any
<TT
CLASS="LITERAL"
>\.</TT
> to terminate the copy data</P
><P
>The new code
requires <TT
CLASS="LITERAL"
>\.</TT
> to appear alone on a line, as per
documentation.</P
></LI
><LI
><P
>Make COPY CSV mode quote a literal data value of
<TT
CLASS="LITERAL"
>\.</TT
> to ensure it cannot be interpreted as the
end-of-data marker (Bruce)</P
></LI
><LI
><P
>Various fixes for functions returning <TT
CLASS="LITERAL"
>RECORD</TT
>s
(Tom) </P
></LI
><LI
><P
>Fix processing of <TT
CLASS="FILENAME"
>postgresql.conf</TT
> so a
final line with no newline is processed properly (Tom)</P
></LI
><LI
><P
>Fix bug in <TT
CLASS="FILENAME"
>/contrib/pgcrypto</TT
> gen_salt,
which caused it not to use all available salt space for MD5 and
XDES algorithms (Marko Kreen, Solar Designer)</P
><P
>Salts for Blowfish and standard DES are unaffected.</P
></LI
><LI
><P
>Fix autovacuum crash when processing expression indexes</P
></LI
><LI
><P
>Fix <TT
CLASS="FILENAME"
>/contrib/dblink</TT
> to throw an error,
rather than crashing, when the number of columns specified is different from
what's actually returned by the query (Joe)</P
></LI
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