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



NAME
       db5.3_stat - Display statistics for Berkeley DB environments

SYNOPSIS
       db5.3_stat -d file [-fN] [-h home] [-P password] [-s database]

       db5.3_stat [-cEelmNrtVZ] [-C Aclop] [-h home] [-L A] [-M A] [-R A] [-P password]

DESCRIPTION
       The db5.3_stat utility displays statistics for Berkeley DB environments.

OPTIONS
       -C     Display  internal  information  about the locking subsystem.  (The output from this
              option is often both voluminous and meaningless, and is intended  only  for  debug‐
              ging.)

              A      Display all information.

              c      Display lock conflict matrix.

              l      Display lockers within hash chains.

              o      Display lock objects within hash chains.

              p      Display locking subsystem parameters.

       -c     Display locking subsystem statistics, as described in DB_ENV->lock_stat.

       -d     Display database statistics for the specified file, as described in DB->stat.

              If  the  database contains multiple databases and the -s flag is not specified, the
              statistics are for the internal database that describes  the  other  databases  the
              file contains, and not for the file as a whole.

       -E     Display  internal information about the database environment, including all config‐
              ured subsystems of the database environment.  (The output from this option is often
              both voluminous and meaningless, and is intended only for debugging.)

       -e     Display  information  about the database environment, including all configured sub‐
              systems of the database environment.

       -f     Display only those database statistics that can be acquired without traversing  the
              database.

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

       -l     Display logging subsystem statistics, as described in DB_ENV->log_stat.

       -M     Display internal information about the cache.  (The  output  from  this  option  is
              often both voluminous and meaningless, and is intended only for debugging.)

              A      Display all information.

              h      Display buffers within hash chains.

       -m     Display cache statistics, as described in DB_ENV->memp_stat.

       -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 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.

       -R     Display  internal  information  about  the replication subsystem.  (The output from
              this option is often both voluminous and meaningless,  and  is  intended  only  for
              debugging.)

              A      Display all information.

       -r     Display replication statistics, as described in DB_ENV->rep_stat.

       -s     Display  statistics for the specified database contained in the file specified with
              the -d flag.

       -t     Display transaction subsystem statistics, as described in DB_ENV->txn_stat.

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

       -Z     Reset the statistics after reporting them; valid only with the -C, -c, -E, -e,  -L,
              -l, -M, -m, -R, -r, and -t options.

       Values  normally  displayed in quantities of bytes are displayed as a combination of giga‐
       bytes (GB), megabytes (MB), kilobytes (KB), and bytes (B).  Otherwise, values smaller than
       10  million  are displayed without any special notation, and values larger than 10 million
       are displayed as a number followed by "M".

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

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



                                         28 January 2005                            DB5.3_STAT(1)