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>Appendix E. Release Notes</TD
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><A
NAME="RELEASE-8-3-1"
>E.120. Release 8.3.1</A
></H1
><DIV
CLASS="FORMALPARA"
><P
><B
>Release date: </B
>2008-03-17</P
></DIV
><P
>   This release contains a variety of fixes from 8.3.0.
   For information about new features in the 8.3 major release, see
   <A
HREF="release-8-3.html"
>Section E.121</A
>.
  </P
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN131211"
>E.120.1. Migration to Version 8.3.1</A
></H2
><P
>    A dump/restore is not required for those running 8.3.X.
    However, you might need to <TT
CLASS="COMMAND"
>REINDEX</TT
> indexes on textual
    columns after updating, if you are affected by the Windows locale
    issue described below.
   </P
></DIV
><DIV
CLASS="SECT2"
><H2
CLASS="SECT2"
><A
NAME="AEN131215"
>E.120.2. Changes</A
></H2
><P
></P
><UL
><LI
><P
>      Fix character string comparison for Windows locales that consider
      different character combinations as equal (Tom)
     </P
><P
>      This fix applies only on Windows and only when using UTF-8
      database encoding.  The same fix was made for all other cases
      over two years ago, but Windows with UTF-8 uses a separate code
      path that was not updated.  If you are using a locale that
      considers some non-identical strings as equal, you may need to
      <TT
CLASS="COMMAND"
>REINDEX</TT
> to fix existing indexes on textual columns.
     </P
></LI
><LI
><P
>      Repair corner-case bugs in <TT
CLASS="COMMAND"
>VACUUM FULL</TT
> (Tom)
     </P
><P
>      A potential deadlock between concurrent <TT
CLASS="COMMAND"
>VACUUM FULL</TT
>
      operations on different system catalogs was introduced in 8.2.
      This has now been corrected.  8.3 made this worse because the
      deadlock could occur within a critical code section, making it
      a PANIC rather than just ERROR condition.
     </P
><P
>      Also, a <TT
CLASS="COMMAND"
>VACUUM FULL</TT
> that failed partway through
      vacuuming a system catalog could result in cache corruption in
      concurrent database sessions.
     </P
><P
>      Another <TT
CLASS="COMMAND"
>VACUUM FULL</TT
> bug introduced in 8.3 could
      result in a crash or out-of-memory report when dealing with
      pages containing no live tuples.
     </P
></LI
><LI
><P
>      Fix misbehavior of foreign key checks involving <TT
CLASS="TYPE"
>character</TT
>
      or <TT
CLASS="TYPE"
>bit</TT
> columns (Tom)
     </P
><P
>      If the referencing column were of a different but compatible type
      (for instance <TT
CLASS="TYPE"
>varchar</TT
>), the constraint was enforced incorrectly.
     </P
></LI
><LI
><P
>      Avoid needless deadlock failures in no-op foreign-key checks (Stephan
      Szabo, Tom)
     </P
></LI
><LI
><P
>      Fix possible core dump when re-planning a prepared query (Tom)
     </P
><P
>      This bug affected only protocol-level prepare operations, not
      SQL <TT
CLASS="COMMAND"
>PREPARE</TT
>, and so tended to be seen only with
      JDBC, DBI, and other client-side drivers that use prepared
      statements heavily.
     </P
></LI
><LI
><P
>      Fix possible failure when re-planning a query that calls an SPI-using
      function (Tom)
     </P
></LI
><LI
><P
>      Fix failure in row-wise comparisons involving columns of different
      datatypes (Tom)
     </P
></LI
><LI
><P
>      Fix longstanding <TT
CLASS="COMMAND"
>LISTEN</TT
>/<TT
CLASS="COMMAND"
>NOTIFY</TT
>
      race condition (Tom)
     </P
><P
>      In rare cases a session that had just executed a
      <TT
CLASS="COMMAND"
>LISTEN</TT
> might not get a notification, even though
      one would be expected because the concurrent transaction executing
      <TT
CLASS="COMMAND"
>NOTIFY</TT
> was observed to commit later.
     </P
><P
>      A side effect of the fix is that a transaction that has executed
      a not-yet-committed <TT
CLASS="COMMAND"
>LISTEN</TT
> command will not see any
      row in <TT
CLASS="STRUCTNAME"
>pg_listener</TT
> for the <TT
CLASS="COMMAND"
>LISTEN</TT
>,
      should it choose to look; formerly it would have.  This behavior
      was never documented one way or the other, but it is possible that
      some applications depend on the old behavior.
     </P
></LI
><LI
><P
>      Disallow <TT
CLASS="COMMAND"
>LISTEN</TT
> and <TT
CLASS="COMMAND"
>UNLISTEN</TT
> within a
      prepared transaction (Tom)
     </P
><P
>      This was formerly allowed but trying to do it had various unpleasant
      consequences, notably that the originating backend could not exit
      as long as an <TT
CLASS="COMMAND"
>UNLISTEN</TT
> remained uncommitted.
     </P
></LI
><LI
><P
>      Disallow dropping a temporary table within a
      prepared transaction (Heikki)
     </P
><P
>      This was correctly disallowed by 8.1, but the check was inadvertently
      broken in 8.2 and 8.3.
     </P
></LI
><LI
><P
>      Fix rare crash when an error occurs during a query using a hash index
      (Heikki)
     </P
></LI
><LI
><P
>      Fix incorrect comparison of <TT
CLASS="TYPE"
>tsquery</TT
> values (Teodor)
     </P
></LI
><LI
><P
>      Fix incorrect behavior of <TT
CLASS="LITERAL"
>LIKE</TT
> with non-ASCII characters
      in single-byte encodings (Rolf Jentsch)
     </P
></LI
><LI
><P
>      Disable <CODE
CLASS="FUNCTION"
>xmlvalidate</CODE
> (Tom)
     </P
><P
>      This function should have been removed before 8.3 release, but
      was inadvertently left in the source code.  It poses a small
      security risk since unprivileged users could use it to read the
      first few characters of any file accessible to the server.
     </P
></LI
><LI
><P
>      Fix memory leaks in certain usages of set-returning functions (Neil)
     </P
></LI
><LI
><P
>      Make <CODE
CLASS="FUNCTION"
>encode(<TT
CLASS="REPLACEABLE"
><I
>bytea</I
></TT
>, 'escape')</CODE
> convert all
      high-bit-set byte values into <TT
CLASS="LITERAL"
>\</TT
><TT
CLASS="REPLACEABLE"
><I
>nnn</I
></TT
> octal
      escape sequences (Tom)
     </P
><P
>      This is necessary to avoid encoding problems when the database
      encoding is multi-byte.  This change could pose compatibility issues
      for applications that are expecting specific results from
      <CODE
CLASS="FUNCTION"
>encode</CODE
>.
     </P
></LI
><LI
><P
>      Fix input of datetime values for February 29 in years BC (Tom)
     </P
><P
>      The former coding was mistaken about which years were leap years.
     </P
></LI
><LI
><P
>      Fix <SPAN
CLASS="QUOTE"
>"unrecognized node type"</SPAN
> error in some variants of
      <TT
CLASS="COMMAND"
>ALTER OWNER</TT
> (Tom)
     </P
></LI
><LI
><P
>      Avoid tablespace permissions errors in <TT
CLASS="COMMAND"
>CREATE TABLE LIKE
      INCLUDING INDEXES</TT
> (Tom)
     </P
></LI
><LI
><P
>      Ensure <TT
CLASS="STRUCTNAME"
>pg_stat_activity</TT
>.<TT
CLASS="STRUCTFIELD"
>waiting</TT
> flag
      is cleared when a lock wait is aborted (Tom)
     </P
></LI
><LI
><P
>      Fix handling of process permissions on Windows Vista (Dave, Magnus)
     </P
><P
>      In particular, this fix allows starting the server as the Administrator
      user.
     </P
></LI
><LI
><P
>      Update time zone data files to <SPAN
CLASS="APPLICATION"
>tzdata</SPAN
> release 2008a
      (in particular, recent Chile changes); adjust timezone abbreviation
      <TT
CLASS="LITERAL"
>VET</TT
> (Venezuela) to mean UTC-4:30, not UTC-4:00 (Tom)
     </P
></LI
><LI
><P
>      Fix <SPAN
CLASS="APPLICATION"
>ecpg</SPAN
> problems with arrays (Michael)
     </P
></LI
><LI
><P
>      Fix <SPAN
CLASS="APPLICATION"
>pg_ctl</SPAN
> to correctly extract the postmaster's port
      number from command-line options (Itagaki Takahiro, Tom)
     </P
><P
>      Previously, <TT
CLASS="LITERAL"
>pg_ctl start -w</TT
> could try to contact the
      postmaster on the wrong port, leading to bogus reports of startup
      failure.
     </P
></LI
><LI
><P
>      Use <TT
CLASS="OPTION"
>-fwrapv</TT
> to defend against possible misoptimization
      in recent <SPAN
CLASS="APPLICATION"
>gcc</SPAN
> versions (Tom)
     </P
><P
>      This is known to be necessary when building <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
>
      with <SPAN
CLASS="APPLICATION"
>gcc</SPAN
> 4.3 or later.
     </P
></LI
><LI
><P
>      Enable building <TT
CLASS="FILENAME"
>contrib/uuid-ossp</TT
> with MSVC (Hiroshi Saito)
     </P
></LI
></UL
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