db_stat -d file [-fN] [-h home] [-P password] [-s database]
db_stat [-cEelmNrtVxZ] [-C Aclop] [-h home] [-L A] [-M A] [-R A] [-P password]
The db_stat utility displays statistics for Berkeley DB environments.
The options are as follows:
- Display detailed information about the locking subsystem.
- Display lock conflict matrix.
- Display lockers within hash chains.
- Display lock objects within hash chains.
- Display locking subsystem parameters.
- Display database statistics for the specified file, as described in
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.
- Display detailed information about the database environment.
- Display information about the database environment, including
all configured subsystems of the database environment.
- Display only those database statistics that can be
acquired without traversing the database.
- Specify a home directory for the database environment; by
default, the current working directory is used.
- Display detailed information about the cache.
- Display buffers within hash chains.
- Do not acquire shared region mutexes while running. Other problems,
such as potentially 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.
- 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.
- Display detailed information about the replication subsystem.
- Display statistics for the specified database contained in the file
specified with the -d flag.
- Write the library version number to the standard output, and exit.
- Reset the statistics after reporting them; valid only with the -C,
-c, -E, -e, -L, -l,
-M, -m, -R, -r, and -t
Values normally displayed in quantities of bytes are displayed as a
combination of gigabytes (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 db_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, db_stat should always be given the chance to
detach from the environment and exit gracefully. To cause db_stat
to release all environment resources and exit cleanly, send it an
interrupt signal (SIGINT).
The db_stat utility exits 0 on success, and >0 if an error occurs.
- 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
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