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 MDB_STAT(1)                     LMDB 0.9.17                     MDB_STAT(1)
                                 2015/09/30



 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>









                                    - 1 -      Formatted:  February 22, 2024