db_upgrade(1) [mojave man page]

db_upgrade(1)						    BSD General Commands Manual 					     db_upgrade(1)

NAME

     db_upgrade

SYNOPSIS

     db_upgrade [-NsV] [-h home] [-P password] file ...

DESCRIPTION

     The db_upgrade utility upgrades the Berkeley DB version of one or more files and the databases they contain to the current release version.

     The options are as follows:

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

     -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.

     -s
	This flag is only meaningful when upgrading databases from releases before the Berkeley DB 3.1 release.

	As part of the upgrade from the Berkeley DB 3.0 release to the 3.1 release, the on-disk format of duplicate data items changed. To cor-
	rectly upgrade the format requires that applications specify whether duplicate data items in the database are sorted or not. Specifying
	the -s flag means that the duplicates are sorted; otherwise, they are assumed to be unsorted. Incorrectly specifying the value of this
	flag may lead to database corruption.

	Because the db_upgrade utility upgrades a physical file (including all the databases it contains), it is not possible to use db_upgrade to
	upgrade files where some of the databases it includes have sorted duplicate data items, and some of the databases it includes have
	unsorted duplicate data items. If the file does not have more than a single database, if the databases do not support duplicate data
	items, or if all the databases that support duplicate data items support the same style of duplicates (either sorted or unsorted),
	db_upgrade will work correctly as long as the -s flag is correctly specified. Otherwise, the file cannot be upgraded using db_upgrade, and
	must be upgraded manually using the db_dump and db_load utilities.

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

     It is important to realize that Berkeley DB database upgrades are done in place, and so are potentially destructive. This means that if the
     system crashes during the upgrade procedure, or if the upgrade procedure runs out of disk space, the databases may be left in an inconsistent
     and unrecoverable state. See Upgrading databases for more information.

     The db_upgrade 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_upgrade should always be given the chance to detach from the environment and exit gracefully. To cause db_upgrade
     to release all environment resources and exit cleanly, send it an interrupt signal (SIGINT).

     The db_upgrade 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.

SEE ALSO

     db_archive(1), db_checkpoint(1), db_deadlock(1), db_dump(1), db_load(1), db_printlog(1), db_recover(1), db_stat(1), db_verify(1)

Darwin								 December 3, 2003							    Darwin

db_stat(1)						    BSD General Commands Manual 						db_stat(1)

NAME

     db_stat

SYNOPSIS

     db_stat -d file [-fN] [-h home] [-P password] [-s database]
     db_stat [-celmNrtVZ] [-C Aclmop] [-h home] [-M Ahm] [-P password]

DESCRIPTION

     The db_stat utility 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.

	l  Display lockers within hash chains.

	m  Display region memory information.

	o  Display objects within hash chains.

	p  Display lock region parameters.

     -c
	Display lock region 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 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 DB_ENV->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.

	m  Display region memory information.

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

     -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.

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

     -t
	Display transaction region 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, -e, -l, -m, and -t options.

     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.

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.

SEE ALSO

     db_archive(1), db_checkpoint(1), db_deadlock(1), db_dump(1), db_load(1), db_printlog(1), db_recover(1), db_upgrade(1), db_verify(1)

Darwin								 December 3, 2003							    Darwin