m4_comment([$Id: disk.so,v 1.5 2007/06/14 18:31:18 bostic Exp $])

m4_ref_title(Upgrading m4_db Applications,
    Release 4.6: upgrade requirements,,
    upgrade.4.6/win, test/run)

m4_p([dnl
The log file format changed in the m4_db 4.6 release.])

m4_p([dnl
The format of Hash database pages was changed in the m4_db 4.6 release,
and items are now stored in sorted order.  m4_bold([The format changes
are entirely backward-compatible, and no database upgrades are needed.])
However, upgrading existing databases can offer significant performance
improvements.  Note that databases created using the 4.1 release may
not be usable with earlier m4_db releases.])

m4_p([dnl
For further information on upgrading m4_db installations, see
m4_link(M4RELDIR/ref/upgrade/process, Upgrading m4_db installations).])

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