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VACUUMDB(1)             PostgreSQL Client Applications             VACUUMDB(1)

       vacuumdb - garbage-collect and analyze a PostgreSQL database

       vacuumdb  [  connection-option... ]  [  [ --full ]  [ -f ]  ]  [  [ --verbose ]  [ -v ]  ]  [  [ --analyze ]  [
       -z ]  ]  [  [ --freeze ]  [ -F ]  ]  [ --table | -t table
        [ ( column [,...] ) ]
        ]  [ dbname ]

       vacuumdb [ connection-options... ]  [  [ --all ]  [ -a ]  ]  [  [ --full ]  [ -f ]  ]  [  [ --verbose ]  [ -v ]
       ]  [  [ --analyze ]  [ -z ]  ]  [  [ --freeze ]  [ -F ]  ]

       vacuumdb is a utility for cleaning a PostgreSQL database.  vacuumdb will also generate internal statistics used
       by the PostgreSQL query optimizer.

       vacuumdb is a wrapper around the SQL command VACUUM [vacuum(7)].  There is no effective difference between vac-
       uuming databases via this utility and via other methods for accessing the server.

       vacuumdb accepts the following command-line arguments:


       --all  Vacuum all databases.

       [-d] dbname

       [--dbname] dbname
              Specifies  the  name  of  the  database  to be cleaned or analyzed.  If this is not specified and -a (or
              --all) is not used, the database name is read from the environment variable PGDATABASE. If that  is  not
              set, the user name specified for the connection is used.


       --echo Echo the commands that vacuumdb generates and sends to the server.


       --full Perform ''full'' vacuuming.


              Do not display progress messages.

       -t table [ (column [,...]) ]

       --table table [ (column [,...]) ]
              Clean  or  analyze  table  only.   Column  names can be specified only in conjunction with the --analyze

              Tip: If you specify columns, you probably have to escape the parentheses from the shell.  (See  examples


              Print detailed information during processing.


              Calculate statistics for use by the optimizer.


              Aggressively ''freeze'' tuples.

       vacuumdb also accepts the following command-line arguments for connection parameters:

       -h host

       --host host
              Specifies the host name of the machine on which the server is running. If the value begins with a slash,
              it is used as the directory for the Unix domain socket.

       -p port

       --port port
              Specifies the TCP port or local Unix domain socket file extension on which the server is  listening  for

       -U username

       --username username
              User name to connect as.


              Never  issue  a  password  prompt.  If the server requires password authentication and a password is not
              available by other means such as a .pgpass file, the connection attempt will fail. This  option  can  be
              useful in batch jobs and scripts where no user is present to enter a password.


              Force vacuumdb to prompt for a password before connecting to a database.

              This  option  is  never essential, since vacuumdb will automatically prompt for a password if the server
              demands password authentication.  However, vacuumdb will waste a connection attempt finding out that the
              server wants a password.  In some cases it is worth typing -W to avoid the extra connection attempt.




       PGUSER Default connection parameters

       This utility, like most other PostgreSQL utilities, also uses the environment variables supported by libpq (see
       in the documentation).

       In case of difficulty, see VACUUM [vacuum(7)] and psql(1) for discussions of potential problems and error  mes-
       sages.   The  database  server  must be running at the targeted host. Also, any default connection settings and
       environment variables used by the libpq front-end library will apply.

       vacuumdb might need to connect several times to the PostgreSQL server, asking for a password each time.  It  is
       convenient to have a ~/.pgpass file in such cases. See in the documentation for more information.

       To clean the database test:

       $ vacuumdb test

       To clean and analyze for the optimizer a database named bigdb:

       $ vacuumdb --analyze bigdb

       To  clean  a  single  table foo in a database named xyzzy, and analyze a single column bar of the table for the

       $ vacuumdb --analyze --verbose --table 'foo(bar)' xyzzy

       VACUUM [vacuum(7)]

Application                       2014-02-17                       VACUUMDB(1)