MAN page from CentOS 8 libdb-utils-5.3.28-42.el8_4.x86_64.rpm
DB_PRINTLOG
Section: BerkeleyDB Utilities (1)
Updated: 06 December 2016
Index 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 filesin 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 forthe "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; bydefault, 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 beused under any other circumstances.
- -P password
- Specify an environment password. Although Berkeley DB utilities overwritepassword strings as soon as possible, be aware there may be a window ofvulnerability on systems where unprivileged users can see command-linearguments or where utilities are not able to overwrite the memorycontaining the command-line arguments.
- -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, orbecause the utility was run in a directory containing a Berkeley DBenvironment). In order to avoid environment corruption when using aBerkeley DB environment, db_printlog should always be given the chance todetach from the environment and exit gracefully. To cause db_printlogto release all environment resources and exit cleanly, send it aninterrupt 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 variableDB_HOME is set, it is used as the path of the database home, as describedin 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 correctly, you need a
DB_CONFIG file which setsthe proper paths using the set_lg_dir configuration parameter.
SEE ALSO
db_archive(1)
db_checkpoint(1)
db_deadlock(1)
db_dump(1)
db_hotbackup(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)
Index
- NAME
- SYNOPSIS
- DESCRIPTION
- OPTIONS
- EXIT STATUS
- ENVIRONMENT
- NOTES
- SEE ALSO
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