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db_stat

 APIRef 

db_stat [-celmNtV]
    [-C Acfhlmo] [-d file [-f fast] [-s database]] [-h home] [-M Ahlm]

Description

The db_stat utility displays statistics for Berkeley DB environments.

The options are as follows:

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

A
Display all information.
c
Display lock conflict matrix.
f
Display lock and object free lists.
l
Display lockers within hash chains.
m
Display region memory information.
o
Display objects within hash chains.

-c
Display lock region statistics, as described in 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 current environment statistics.

-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 log region statistics, as described in log_stat.

-M
Display internal information about the shared memory buffer pool. (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.
l
Display buffers within LRU chains.
m
Display region memory information.

-m
Display shared memory buffer pool statistics, as described in memp_stat.

-N
Do not acquire shared region locks 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.

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

-t
Display transaction region statistics, as described in txn_stat.

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

Values smaller than 10 million are generally displayed without any special notation. Values larger than 10 million are normally displayed as <number>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.

Environment Variables

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.

See Also

berkeley_db_svc, db_archive, db_checkpoint, db_deadlock, db_dump, db_load, db_recover, db_stat, db_upgrade, and db_verify.

Copyright Sleepycat Software @ 1.1 log @Initial revision @ text @d1 1 a1 1 @ 1.1.1.1 log @Import: RPM 4.0.3 @ text @@ 1.1.1.2 log @Import: RPM 4.0.4 @ text @d1 1 a1 1 d21 1 a21 1 

db_stat [-celmNtVZ]
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-c
Display lock region statistics, as described in DB_ENV->lock_stat.
d50 1
a50 1

-l
Display log region statistics, as described in DB_ENV->log_stat.
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a61 1
DB_ENV->memp_stat.
d68 1
a68 1

-t
Display transaction region statistics, as described in DB_ENV->txn_stat.
a69 3

-Z
Reset the statistics after reporting them; valid only with the
-c, -e, -l, -m, and -t
options.
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db_stat -d file [-fN] [-h home] [-P password] [-s database]
db_stat [-celmNrtVZ] [-C Aclmop] [-h home] [-M Ahm] [-P password]

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a37 1

p
Display lock region parameters.
d57 1
d62 4
a65 10

-N
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.

-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 replication statistics, as described in DB_ENV->rep_stat.
d74 3
a76 5

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".
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db_stat [-celmNtVZ]
    [-C Acfhlmo] [-d file [-f fast] [-s database]] [-h home] [-M Ahlm]

a34 1

f
Display lock and object free lists.
d38 1
a57 1

l
Display buffers within LRU chains.
d62 10
a71 4

-N
Do not acquire shared region locks 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.
d80 5
a84 3

Values smaller than 10 million are generally displayed without any special
notation.  Values larger than 10 million are normally displayed as
<number>M.
a99 12

See Also

berkeley_db_svc,
db_archive,
db_checkpoint,
db_deadlock,
db_dump,
db_load,
db_recover,
db_stat,
db_upgrade,
and
db_verify.
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db_stat -d file [-fN] [-h home] [-P password] [-s database]
db_stat [-celmNrtVZ] [-C Aclmop] [-h home] [-M Ahm] [-P password]

d34 1
a37 1

p
Display lock region parameters.
d57 1
d62 4
a65 10

-N
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.

-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 replication statistics, as described in DB_ENV->rep_stat.
d74 3
a76 5

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".
d92 12
@