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



NAME
       db5.3_recover - Restore the database to a consistent state

SYNOPSIS
       db5.3_recover [-ceVv] [-h home] [-P password] [-t [[CC]YY]MMDDhhmm[.SS]]]

DESCRIPTION
       The db5.3_recover utility must be run after an unexpected application, Berkeley DB, or system
       failure to restore the database to a consistent state. All committed transactions are guaran‐
       teed  to  appear  after  db5.3_recover has run, and all uncommitted transactions will be com‐
       pletely undone.

OPTIONS
       -c     Perform catastrophic recovery instead of normal recovery.

       -e     Retain the environment after running recovery.  This option will rarely be used unless
              a  DB_CONFIG  file  is  present  in  the  home  directory.  If a DB_CONFIG file is not
              present, then the regions will be created with default parameter values.

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

       -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.

       -t     Recover to the time specified rather than to the  most  current  possible  date.   The
              timestamp argument should be in the form [[CC]YY]MMDDhhmm[.SS] where each pair of let‐
              ters represents the following:

              CC     The first two digits of the year (the century).

              YY     The second two digits of the year.  If "YY" is specified, but "CC"  is  not,  a
                     value  for  "YY" between 69 and 99 results in a "CC" value of 19.  Otherwise, a
                     "YY" value of 20 is used.

              MM     The month of the year, from 1 to 12.

              DD     The day of the month, from 1 to 31.

              hh     The hour of the day, from 0 to 23.

              mm     The minute of the hour, from 0 to 59.

              SS     The second of the minute, from 0 to 61.

              If the "CC" and "YY" letter pairs are not specified, the values default to the current
              year.  If the "SS" letter pair is not specified, the value defaults to 0.

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

       -v     Run in verbose mode.

       In  the case of catastrophic recovery, an archival copy - or snapshot - of all database files
       must be restored along with all of the log files written since the database file snapshot was
       made.  (If disk space is a problem, log files may be referenced by symbolic links).

       If  the  failure was not catastrophic, the files present on the system at the time of failure
       are sufficient to perform recovery.

       If log files are missing, db5.3_recover will identify the missing log file(s)  and  fail,  in
       which case the missing log files need to be restored and recovery performed again.

       The db5.3_recover utility uses 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 using a Berkeley DB
       environment, db5.3_recover should always be given the chance to detach from  the  environment
       and  exit  gracefully.   To cause db5.3_recover to release all environment resources and exit
       cleanly, send it an interrupt signal (SIGINT).

       The db5.3_recover 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_recover from Sleepycat, by Thijs Kinkhorst <thijs AT kinkhorst.com>, for  the  Debian  system
       (but may be used by others).



                                           28 January 2005                          DB5.3_RECOVER(1)