vacuumdb



VACUUMDB(1)             PostgreSQL Client Applications             VACUUMDB(1)




NAME

       vacuumdb - garbage-collect and analyze a PostgreSQL database



SYNOPSIS

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

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


DESCRIPTION

       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 vacuuming databases via this utility
       and via other methods for accessing the server.


OPTIONS

       vacuumdb accepts the following command-line arguments:

       -a

       --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.

       -e

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

       -f

       --full Perform ‘‘full’’ vacuuming.

       -q

       --quiet
              Do not display a response.

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

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

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


       -v

       --verbose
              Print detailed information during processing.

       -z

       --analyze
              Calculate statistics for use by the optimizer.


       vacuumdb also accepts the following command-line arguments for  connec-
       tion 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 exten-
              sion on which the server is listening for connections.

       -U username

       --username username
              User name to connect as

       -W

       --password
              Force password prompt.



ENVIRONMENT

       PGDATABASE

       PGHOST

       PGPORT

       PGUSER Default connection parameters


DIAGNOSTICS

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


NOTES

       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 the documentation for more information.


EXAMPLES

       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 optimizer:

       $ vacuumdb --analyze --verbose --table â€â€™foo(bar)â€â€™ xyzzy



SEE ALSO

       VACUUM [vacuum(7)]



Application                       2005-01-17                       VACUUMDB(1)

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