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DB5.3_UPGRADE(1)                       General Commands Manual                      DB5.3_UPGRADE(1)



NAME
       db5.3_upgrade - Upgrade the Berkeley DB version to the current release version.

SYNOPSIS
       db5.3_upgrade [-NsVv] [-h home] [-P password] file ...

DESCRIPTION
       The db5.3_upgrade utility upgrades the Berkeley DB version of one or more files and the data‐
       bases they contain to the current release version.

OPTIONS
       -h     Specify a home directory for the database environment; by default, the current working
              directory is used.

       -N     Do  not  acquire  shared region mutexes while running.  Other problems, such as poten‐
              tially fatal errors in Berkeley DB, will be ignored as well.  This option is  intended
              only for debugging errors, and should not be used under any other circumstances.

       -P     Specify  an  environment  password.  Although Berkeley DB utilities overwrite password
              strings as soon as possible, be aware there may be a window of vulnerability  on  sys‐
              tems  where  unprivileged  users can see command-line arguments or where utilities are
              not able to overwrite the memory containing the command-line arguments.

       -s     This flag is only meaningful when upgrading databases from releases before the  Berke‐
              ley DB 3.1 release.

              As  part  of  the upgrade from the Berkeley DB 3.0 release to the 3.1 release, the on-
              disk format of duplicate data items changed. To correctly upgrade the format  requires
              that  applications  specify whether duplicate data items in the database are sorted or
              not. Specifying the -s flag means that the duplicates are sorted; otherwise, they  are
              assumed  to  be  unsorted.   Incorrectly specifying the value of this flag may lead to
              database corruption.

              Because the db5.3_upgrade utility upgrades a physical file (including  all  the  data‐
              bases  it  contains),  it  is not possible to use db5.3_upgrade to upgrade files where
              some of the databases it includes have sorted duplicate data items, and  some  of  the
              databases  it  includes  have unsorted duplicate data items. If the file does not have
              more than a single database, if the databases do not support duplicate data items,  or
              if  all  the databases that support duplicate data items support the same style of du‐
              plicates (either sorted or unsorted), db5.3_upgrade will work correctly as long as the
              -s flag is correctly specified. Otherwise, the file cannot be upgraded using db5.3_up‐
              grade, and must be upgraded manually using the db5.3_dump and db5.0_load utilities.

       -V     Write the library version number to the standard output, and exit.

       -v     Run in verbose mode, displaying a message for each successful upgrade.

       It is important to realize that Berkeley DB database upgrades are done in place, and  so  are
       potentially  destructive. This means that if the system crashes during the upgrade procedure,
       or if the upgrade procedure runs out of disk space, the databases may be left in an inconsis‐
       tent and unrecoverable state.

       The db5.3_upgrade utility may be used with a Berkeley DB environment (as described for the -h
       option, the environment variable DB_HOME, or because the utility was run in a directory  con‐
       taining  a  Berkeley  DB environment).  In order to avoid environment corruption when using a
       Berkeley DB environment, db5.3_upgrade should always be given the chance to detach  from  the
       environment and exit gracefully.  To cause db5.3_upgrade to release all environment resources
       and exit cleanly, send it an interrupt signal (SIGINT).

       The db5.3_upgrade utility exits 0 on success, and >0 if an error occurs.

ENVIRONMENT
       DB_HOME
              If the -h option is not specified and the environment variable DB_HOME is set,  it  is
              used as the path of the database home, as described in DB_ENV->open.

AUTHORS
       Sleepycat  Software,  Inc.  This  manual page was created based on the HTML documentation for
       db_upgrade from Sleepycat, by Thijs Kinkhorst <thijs AT kinkhorst.com>, for  the  Debian  system
       (but may be used by others).



                                           28 January 2005                          DB5.3_UPGRADE(1)