MDB_STAT(1) General Commands Manual MDB_STAT(1)
NAME
mdb_stat - LMDB environment status tool
SYNOPSIS
mdb_stat [-V] [-e] [-f[f[f]]] [-n] [-r[r]] [-a | -s subdb] envpath
DESCRIPTION
The mdb_stat utility displays the status of an LMDB environment.
OPTIONS
-V Write the library version number to the standard output, and
exit.
-e Display information about the database environment.
-f Display information about the environment freelist. If -ff is
given, summarize each freelist entry. If -fff is given, display
the full list of page IDs in the freelist.
-n Display the status of an LMDB database which does not use subdi-
rectories.
-r Display information about the environment reader table. Shows
the process ID, thread ID, and transaction ID for each active
reader slot. The process ID and transaction ID are in decimal,
the thread ID is in hexadecimal. The transaction ID is displayed
as "-" if the reader does not currently have a read transaction
open. If -rr is given, check for stale entries in the reader
table and clear them. The reader table will be printed again af-
ter the check is performed.
-a Display the status of all of the subdatabases in the environ-
ment.
-s subdb
Display the status of a specific subdatabase.
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.
SEE ALSO
mdb_copy(1)
AUTHOR
Howard Chu of Symas Corporation <http://www.symas.com>
LMDB 0.9.17 2015/09/30 MDB_STAT(1)
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