DB_PRINTLOG(1) BerkeleyDB Utilities DB_PRINTLOG(1)
NAME
db_printlog - Dumps log files into a human-readable format
SYNOPSIS
db_printlog [-NrV] [-b start-LSN] [-e stop-LSN] [-h home] [-P password]
[-D bytes]
DESCRIPTION
The db_printlog utility is a debugging utility that dumps Berkeley DB
log files in a human-readable format.
OPTIONS
-b start-LSN
Display log records starting at log sequence number (LSN) start-
LSN; start-LSN is specified as a file number, followed by a
slash (/) character, followed by an offset number, with no
intervening whitespace.
-D bytes
Specifies the maximum number of bytes to dump for each key/data
item found in the specified database. This option is only valid
when -da is also specified. This option overrides the value set
for the "set_data_len" parameter in your DB_CONFIG file, if any.
-e stop-LSN
Stop displaying log records at log sequence number (LSN) stop-
LSN; stop-LSN is specified as a file number, followed by a slash
(/) character, followed by an offset number, with no intervening
whitespace.
-h home
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 prob-
lems, 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 password
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 argu-
ments.
-r Read the log files in reverse order.
-V Write the library version number to the standard output, and
exit.
The db_printlog utility uses 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 envi-
ronment, db_printlog should always be given the chance to detach from
the environment and exit gracefully. To cause db_printlog to release
all environment resources and exit cleanly, send it an interrupt signal
(SIGINT).
EXIT STATUS
The db_printlog 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.
NOTES
If the application(s) that use the environment make use of the
DB_ENV->set_lg_dir method, then in order for this utility to run cor-
rectly, you need a DB_CONFIG file which sets the proper paths using the
set_lg_dir configuration parameter.
SEE ALSO
db_archive(1) db_checkpoint(1) db_deadlock(1) db_dump(1) db_hot-
backup(1) db_log_verify(1) db_load(1) db_recover(1) db_replicate(1)
db_stat(1) db_tuner(1) db_upgrade(1) db_verify(1)
BerkeleyDB 5.3.28 06 December 2016 DB_PRINTLOG(1)