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>E.143. Release 8.2.2</A
></H1
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><B
>Release date: </B
>2007-02-05</P
></DIV
><P
>   This release contains a variety of fixes from 8.2.1, including
   a security fix.
   For information about new features in the 8.2 major release, see
   <A
HREF="release-8-2.html"
>Section E.145</A
>.
  </P
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>E.143.1. Migration to Version 8.2.2</A
></H2
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>    A dump/restore is not required for those running 8.2.X.
   </P
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>E.143.2. Changes</A
></H2
><P
></P
><UL
><LI
><P
>      Remove security vulnerabilities that allowed connected users
      to read backend memory (Tom)
     </P
><P
>      The vulnerabilities involve suppressing the normal check that a SQL
      function returns the data type it's declared to, and changing the
      data type of a table column (CVE-2007-0555, CVE-2007-0556).  These
      errors can easily be exploited to cause a backend crash, and in
      principle might be used to read database content that the user
      should not be able to access.
     </P
></LI
><LI
><P
>      Fix not-so-rare-anymore bug wherein btree index page splits could fail
      due to choosing an infeasible split point (Heikki Linnakangas)
     </P
></LI
><LI
><P
>      Fix Borland C compile scripts (L Bayuk)
     </P
></LI
><LI
><P
>      Properly handle <CODE
CLASS="FUNCTION"
>to_char('CC')</CODE
> for years ending in
      <TT
CLASS="LITERAL"
>00</TT
> (Tom)
     </P
><P
>      Year 2000 is in the twentieth century, not the twenty-first.
     </P
></LI
><LI
><P
>      <TT
CLASS="FILENAME"
>/contrib/tsearch2</TT
> localization improvements (Tatsuo, Teodor)
     </P
></LI
><LI
><P
>      Fix incorrect permission check in
      <TT
CLASS="LITERAL"
>information_schema.key_column_usage</TT
> view (Tom)
     </P
><P
>      The symptom is <SPAN
CLASS="QUOTE"
>"relation with OID nnnnn does not exist"</SPAN
> errors.
      To get this fix without using <TT
CLASS="COMMAND"
>initdb</TT
>, use <TT
CLASS="COMMAND"
>CREATE OR
      REPLACE VIEW</TT
> to install the corrected definition found in
      <TT
CLASS="FILENAME"
>share/information_schema.sql</TT
>.  Note you will need to do
      this in each database.
     </P
></LI
><LI
><P
>      Improve <TT
CLASS="COMMAND"
>VACUUM</TT
> performance for databases with many tables (Tom)
     </P
></LI
><LI
><P
>      Fix for rare Assert() crash triggered by <TT
CLASS="LITERAL"
>UNION</TT
> (Tom)
     </P
></LI
><LI
><P
>      Fix potentially incorrect results from index searches using
      <TT
CLASS="LITERAL"
>ROW</TT
> inequality conditions (Tom)
     </P
></LI
><LI
><P
>      Tighten security of multi-byte character processing for UTF8 sequences
      over three bytes long (Tom)
     </P
></LI
><LI
><P
>      Fix bogus <SPAN
CLASS="QUOTE"
>"permission denied"</SPAN
> failures occurring on Windows
      due to attempts to fsync already-deleted files (Magnus, Tom)
     </P
></LI
><LI
><P
>      Fix bug that could cause the statistics collector
      to hang on Windows (Magnus)
     </P
><P
>      This would in turn lead to autovacuum not working.
     </P
></LI
><LI
><P
>      Fix possible crashes when an already-in-use PL/pgSQL function is
      updated (Tom)
     </P
></LI
><LI
><P
>      Improve PL/pgSQL handling of domain types (Sergiy Vyshnevetskiy, Tom)
     </P
></LI
><LI
><P
>      Fix possible errors in processing PL/pgSQL exception blocks (Tom)
     </P
></LI
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