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+<HTML
+><HEAD
+><TITLE
+>Modifying Your Running System</TITLE
+><META
+NAME="GENERATOR"
+CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
+"><LINK
+REL="HOME"
+TITLE="The Bugzilla Guide"
+HREF="index.html"><LINK
+REL="UP"
+TITLE="The Bugzilla Database"
+HREF="database.html"><LINK
+REL="PREVIOUS"
+TITLE="The Bugzilla Database"
+HREF="database.html"><LINK
+REL="NEXT"
+TITLE="MySQL Bugzilla Database Introduction"
+HREF="dbdoc.html"></HEAD
+><BODY
+CLASS="section"
+BGCOLOR="#FFFFFF"
+TEXT="#000000"
+LINK="#0000FF"
+VLINK="#840084"
+ALINK="#0000FF"
+><DIV
+CLASS="NAVHEADER"
+><TABLE
+SUMMARY="Header navigation table"
+WIDTH="100%"
+BORDER="0"
+CELLPADDING="0"
+CELLSPACING="0"
+><TR
+><TH
+COLSPAN="3"
+ALIGN="center"
+>The Bugzilla Guide</TH
+></TR
+><TR
+><TD
+WIDTH="10%"
+ALIGN="left"
+VALIGN="bottom"
+><A
+HREF="database.html"
+ACCESSKEY="P"
+>Prev</A
+></TD
+><TD
+WIDTH="80%"
+ALIGN="center"
+VALIGN="bottom"
+>Appendix B. The Bugzilla Database</TD
+><TD
+WIDTH="10%"
+ALIGN="right"
+VALIGN="bottom"
+><A
+HREF="dbdoc.html"
+ACCESSKEY="N"
+>Next</A
+></TD
+></TR
+></TABLE
+><HR
+ALIGN="LEFT"
+WIDTH="100%"></DIV
+><DIV
+CLASS="section"
+><H1
+CLASS="section"
+><A
+NAME="dbmodify"
+></A
+>B.1. Modifying Your Running System</H1
+><P
+>Bugzilla optimizes database lookups by storing all relatively
+ static information in the
+ <TT
+CLASS="filename"
+>versioncache</TT
+> file, located in the
+ <TT
+CLASS="filename"
+>data/</TT
+>
+ subdirectory under your installation directory.</P
+><P
+>If you make a change to the structural data in your database (the
+ versions table for example), or to the
+ <SPAN
+CLASS="QUOTE"
+>"constants"</SPAN
+>
+
+ encoded in <TT
+CLASS="filename"
+>defparams.pl</TT
+>, you will need to remove
+ the cached content from the data directory (by doing a
+ <SPAN
+CLASS="QUOTE"
+>"rm data/versioncache"</SPAN
+>
+
+ ), or your changes won't show up.</P
+><P
+> <TT
+CLASS="filename"
+>versioncache</TT
+>
+ gets automatically regenerated whenever it's more than
+ an hour old, so Bugzilla will eventually notice your changes by itself,
+ but generally you want it to notice right away, so that you can test
+ things.</P
+></DIV
+><DIV
+CLASS="NAVFOOTER"
+><HR
+ALIGN="LEFT"
+WIDTH="100%"><TABLE
+SUMMARY="Footer navigation table"
+WIDTH="100%"
+BORDER="0"
+CELLPADDING="0"
+CELLSPACING="0"
+><TR
+><TD
+WIDTH="33%"
+ALIGN="left"
+VALIGN="top"
+><A
+HREF="database.html"
+ACCESSKEY="P"
+>Prev</A
+></TD
+><TD
+WIDTH="34%"
+ALIGN="center"
+VALIGN="top"
+><A
+HREF="index.html"
+ACCESSKEY="H"
+>Home</A
+></TD
+><TD
+WIDTH="33%"
+ALIGN="right"
+VALIGN="top"
+><A
+HREF="dbdoc.html"
+ACCESSKEY="N"
+>Next</A
+></TD
+></TR
+><TR
+><TD
+WIDTH="33%"
+ALIGN="left"
+VALIGN="top"
+>The Bugzilla Database</TD
+><TD
+WIDTH="34%"
+ALIGN="center"
+VALIGN="top"
+><A
+HREF="database.html"
+ACCESSKEY="U"
+>Up</A
+></TD
+><TD
+WIDTH="33%"
+ALIGN="right"
+VALIGN="top"
+>MySQL Bugzilla Database Introduction</TD
+></TR
+></TABLE
+></DIV
+></BODY
+></HTML
+> \ No newline at end of file