MDB_DUMP(1)MDB_DUMP(1)NAMEmdb_dump - LMDB environment export tool
SYNOPSISmdb_dump envpath [-V] [-f file] [-l] [-n] [-p] [-a | -s subdb]
DESCRIPTION
The mdb_dump utility reads a database and writes its contents to the
standard output using a portable flat-text format understood by the
mdb_load(1) utility.
OPTIONS-V Write the library version number to the standard output, and
exit.
-f file
Write to the specified file instead of to the standard output.
-l List the databases stored in the environment. Just the names
will be listed, no data will be output.
-n Dump an LMDB database which does not use subdirectories.
-p If characters in either the key or data items are printing char‐
acters (as defined by isprint(3)), output them directly. This
option permits users to use standard text editors and tools to
modify the contents of databases.
Note: different systems may have different notions about what
characters are considered printing characters, and databases
dumped in this manner may be less portable to external systems.
-a Dump all of the subdatabases in the environment.
-s subdb
Dump a specific subdatabase. If no database is specified, only
the main database is dumped.
DIAGNOSTICS
Exit status is zero if no errors occur. Errors result in a non-zero
exit status and a diagnostic message being written to standard error.
Dumping and reloading databases that use user-defined comparison func‐
tions will result in new databases that use the default comparison
functions. In this case it is quite likely that the reloaded database
will be damaged beyond repair permitting neither record storage nor
retrieval.
The only available workaround is to modify the source for the
mdb_load(1) utility to load the database using the correct comparison
functions.
SEE ALSOmdb_load(1)AUTHOR
Howard Chu of Symas Corporation <http://www.symas.com>
LMDB 0.9.14 2014/06/20 MDB_DUMP(1)
