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MDB_STAT(1)							   MDB_STAT(1)

NAME
       mdb_stat - LMDB environment status tool

SYNOPSIS
       mdb_stat	 envpath [-V] [-e] [-f[f[f]]] [-n] [-r[r]] [-a | -s subdb]

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
	      after 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 0.9.14			  2014/06/20			   MDB_STAT(1)

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