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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 of-
ten 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 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.
-R Display internal information about the replication subsystem. (The output from
this option is often both voluminous and meaningless, and is intended only for de-
bugging.)
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 us-
ing 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 re-
sources 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)
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On Apache
Under GNU General Public License
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