db5.3_upgrade(1) - phpMan

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
       databases 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  in-
              tended  only  for  debugging errors, and should not be used under any other circum-
              stances.

       -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
              systems 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
              Berkeley 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 re-
              quires that applications specify whether duplicate data items in the  database  are
              sorted  or not. Specifying the -s flag means that the duplicates are sorted; other-
              wise, 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
              duplicates  (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_upgrade,  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 pro-
       cedure, or if the upgrade procedure runs out of disk space, the databases may be  left  in
       an inconsistent 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
       containing  a Berkeley DB environment).  In order to avoid environment corruption when us-
       ing 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 environ-
       ment 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)

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