EnglishFrenchSpanish

Ad


OnWorks favicon

clusterdb - Online in the Cloud

Run clusterdb in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command clusterdb that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


clusterdb - cluster a PostgreSQL database

SYNOPSIS


clusterdb [connection-option...] [--verbose | -v] [ --table | -t table ]... [dbname]

clusterdb [connection-option...] [--verbose | -v] --all | -a

DESCRIPTION


clusterdb is a utility for reclustering tables in a PostgreSQL database. It finds tables
that have previously been clustered, and clusters them again on the same index that was
last used. Tables that have never been clustered are not affected.

clusterdb is a wrapper around the SQL command CLUSTER(7). There is no effective difference
between clustering databases via this utility and via other methods for accessing the
server.

OPTIONS


clusterdb accepts the following command-line arguments:

-a
--all
Cluster all databases.

[-d] dbname
[--dbname=]dbname
Specifies the name of the database to be clustered. 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 clusterdb generates and sends to the server.

-q
--quiet
Do not display progress messages.

-t table
--table=table
Cluster table only. Multiple tables can be clustered by writing multiple -t switches.

-v
--verbose
Print detailed information during processing.

-V
--version
Print the clusterdb version and exit.

-?
--help
Show help about clusterdb command line arguments, and exit.

clusterdb 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 connections.

-U username
--username=username
User name to connect as.

-w
--no-password
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.

-W
--password
Force clusterdb to prompt for a password before connecting to a database.

This option is never essential, since clusterdb will automatically prompt for a
password if the server demands password authentication. However, clusterdb 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.

--maintenance-db=dbname
Specifies the name of the database to connect to discover what other databases should
be clustered. If not specified, the postgres database will be used, and if that does
not exist, template1 will be used.

ENVIRONMENT


PGDATABASE
PGHOST
PGPORT
PGUSER
Default connection parameters

This utility, like most other PostgreSQL utilities, also uses the environment variables
supported by libpq (see Section 31.14, “Environment Variables”, in the documentation).

DIAGNOSTICS


In case of difficulty, see CLUSTER(7) and psql(1) for discussions of potential problems
and error messages. 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.

EXAMPLES


To cluster the database test:

$ clusterdb test

To cluster a single table foo in a database named xyzzy:

$ clusterdb --table foo xyzzy

Use clusterdb online using onworks.net services


Free Servers & Workstations

Download Windows & Linux apps

  • 1
    Asuswrt-Merlin
    Asuswrt-Merlin
    Asuswrt-Merlin is a third party
    firmware for select Asus wireless
    routers. Based on the Asuswrt firmware
    developed by Asus, it brings tweaks, new
    features and ...
    Download Asuswrt-Merlin
  • 2
    Atom
    Atom
    Atom is a text editor that's
    modern, approachable and full-featured.
    It's also easily customizable- you
    can customize it to do anything and be
    able to ...
    Download Atom
  • 3
    Osu!
    Osu!
    Osu! is a simple rhythm game with a well
    thought out learning curve for players
    of all skill levels. One of the great
    aspects of Osu! is that it is
    community-dr...
    Download Osu!
  • 4
    LIBPNG: PNG reference library
    LIBPNG: PNG reference library
    Reference library for supporting the
    Portable Network Graphics (PNG) format.
    Audience: Developers. Programming
    Language: C. This is an application that
    can also...
    Download LIBPNG: PNG reference library
  • 5
    Metal detector based on  RP2040
    Metal detector based on RP2040
    Based on Raspberry Pi Pico board, this
    metal detector is included in pulse
    induction metal detectors category, with
    well known advantages and disadvantages.
    RP...
    Download Metal detector based on RP2040
  • 6
    PAC Manager
    PAC Manager
    PAC is a Perl/GTK replacement for
    SecureCRT/Putty/etc (linux
    ssh/telnet/... gui)... It provides a GUI
    to configure connections: users,
    passwords, EXPECT regula...
    Download PAC Manager
  • More »

Linux commands

Ad