MDB_STAT(1)             FreeBSD 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
              subdirectories.

       -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
              after the check is performed.

       -a     Display the status of all of the subdatabases in the
              environment.

       -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)