Document method of removing invalid UTF8 escape sequences from dump

file.  Backpatch to 8.1.X.

Paul Lindner

doc/src/sgml/release.sgml

 <!--
-$PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.403 2005/12/06 18:45:18 momjian Exp $
+$PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.404 2005/12/06 19:26:43 momjian Exp $
 
 Typical markup:
 
@@ -525,6 +525,20 @@ psql -t -f fixseq.sql db1 | psql -e db1
        <type>boolean</type> rather than an <type>integer</type> (Neil)
       </para>
      </listitem>
+
+     <listitem>
+      <para>
+       Some users are having problems loading <literal>UTF8</> data into
+       8.1.X.  This is because previous versions allowed invalid <literal>UTF8</>
+       sequences to be entered into the database, and this release
+       properly accepts only valid <literal>UTF8</> sequences.  One
+       way to correct a dumpfile is to use <command>iconv -c -f UTF8 -t UTF8</>.
+       This will remove invalid character sequences. <command>iconv</>
+       reads the entire input file into memory so it might be necessary to
+       <command>split</> the dump into multiple smaller files for processing.
+      </para>
+     </listitem>
+
     </itemizedlist>
    </sect2>