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PG_DUMPALL(1)			  PostgreSQL 9.2.7 Documentation		    PG_DUMPALL(1)

NAME
       pg_dumpall - extract a PostgreSQL database cluster into a script file

SYNOPSIS
       pg_dumpall [connection-option...] [option...]

DESCRIPTION
       pg_dumpall is a utility for writing out ("dumping") all PostgreSQL databases of a cluster
       into one script file. The script file contains SQL commands that can be used as input to
       psql(1) to restore the databases. It does this by calling pg_dump(1) for each database in
       a cluster.  pg_dumpall also dumps global objects that are common to all databases.
       (pg_dump does not save these objects.) This currently includes information about database
       users and groups, tablespaces, and properties such as access permissions that apply to
       databases as a whole.

       Since pg_dumpall reads tables from all databases you will most likely have to connect as a
       database superuser in order to produce a complete dump. Also you will need superuser
       privileges to execute the saved script in order to be allowed to add users and groups, and
       to create databases.

       The SQL script will be written to the standard output. Use the [-f|file] option or shell
       operators to redirect it into a file.

       pg_dumpall needs to connect several times to the PostgreSQL server (once per database). If
       you use password authentication it will ask for a password each time. It is convenient to
       have a ~/.pgpass file in such cases. See Section 31.15, "The Password File", in the
       documentation for more information.

OPTIONS
       The following command-line options control the content and format of the output.

       -a, --data-only
	   Dump only the data, not the schema (data definitions).

       -c, --clean
	   Include SQL commands to clean (drop) databases before recreating them.  DROP commands
	   for roles and tablespaces are added as well.

       -f filename, --file=filename
	   Send output to the specified file. If this is omitted, the standard output is used.

       -g, --globals-only
	   Dump only global objects (roles and tablespaces), no databases.

       -i, --ignore-version
	   A deprecated option that is now ignored.

       -o, --oids
	   Dump object identifiers (OIDs) as part of the data for every table. Use this option if
	   your application references the OID columns in some way (e.g., in a foreign key
	   constraint). Otherwise, this option should not be used.

       -O, --no-owner
	   Do not output commands to set ownership of objects to match the original database. By
	   default, pg_dumpall issues ALTER OWNER or SET SESSION AUTHORIZATION statements to set
	   ownership of created schema elements. These statements will fail when the script is
	   run unless it is started by a superuser (or the same user that owns all of the objects
	   in the script). To make a script that can be restored by any user, but will give that
	   user ownership of all the objects, specify -O.

       -r, --roles-only
	   Dump only roles, no databases or tablespaces.

       -s, --schema-only
	   Dump only the object definitions (schema), not data.

       -S username, --superuser=username
	   Specify the superuser user name to use when disabling triggers. This is only relevant
	   if --disable-triggers is used. (Usually, it's better to leave this out, and instead
	   start the resulting script as superuser.)

       -t, --tablespaces-only
	   Dump only tablespaces, no databases or roles.

       -v, --verbose
	   Specifies verbose mode. This will cause pg_dumpall to output start/stop times to the
	   dump file, and progress messages to standard error. It will also enable verbose output
	   in pg_dump.

       -V, --version
	   Print the pg_dumpall version and exit.

       -x, --no-privileges, --no-acl
	   Prevent dumping of access privileges (grant/revoke commands).

       --binary-upgrade
	   This option is for use by in-place upgrade utilities. Its use for other purposes is
	   not recommended or supported. The behavior of the option may change in future releases
	   without notice.

       --column-inserts, --attribute-inserts
	   Dump data as INSERT commands with explicit column names (INSERT INTO table (column,
	   ...) VALUES ...). This will make restoration very slow; it is mainly useful for making
	   dumps that can be loaded into non-PostgreSQL databases.

       --disable-dollar-quoting
	   This option disables the use of dollar quoting for function bodies, and forces them to
	   be quoted using SQL standard string syntax.

       --disable-triggers
	   This option is only relevant when creating a data-only dump. It instructs pg_dumpall
	   to include commands to temporarily disable triggers on the target tables while the
	   data is reloaded. Use this if you have referential integrity checks or other triggers
	   on the tables that you do not want to invoke during data reload.

	   Presently, the commands emitted for --disable-triggers must be done as superuser. So,
	   you should also specify a superuser name with -S, or preferably be careful to start
	   the resulting script as a superuser.

       --inserts
	   Dump data as INSERT commands (rather than COPY). This will make restoration very slow;
	   it is mainly useful for making dumps that can be loaded into non-PostgreSQL databases.
	   Note that the restore might fail altogether if you have rearranged column order. The
	   --column-inserts option is safer, though even slower.

       --lock-wait-timeout=timeout
	   Do not wait forever to acquire shared table locks at the beginning of the dump.
	   Instead, fail if unable to lock a table within the specified timeout. The timeout may
	   be specified in any of the formats accepted by SET statement_timeout. Allowed values
	   vary depending on the server version you are dumping from, but an integer number of
	   milliseconds is accepted by all versions since 7.3. This option is ignored when
	   dumping from a pre-7.3 server.

       --no-security-labels
	   Do not dump security labels.

       --no-tablespaces
	   Do not output commands to create tablespaces nor select tablespaces for objects. With
	   this option, all objects will be created in whichever tablespace is the default during
	   restore.

       --no-unlogged-table-data
	   Do not dump the contents of unlogged tables. This option has no effect on whether or
	   not the table definitions (schema) are dumped; it only suppresses dumping the table
	   data.

       --quote-all-identifiers
	   Force quoting of all identifiers. This may be useful when dumping a database for
	   migration to a future version that may have introduced additional keywords.

       --use-set-session-authorization
	   Output SQL-standard SET SESSION AUTHORIZATION commands instead of ALTER OWNER commands
	   to determine object ownership. This makes the dump more standards compatible, but
	   depending on the history of the objects in the dump, might not restore properly.

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

       The following command-line options control the database connection parameters.

       -h host, --host=host
	   Specifies the host name of the machine on which the database server is running. If the
	   value begins with a slash, it is used as the directory for the Unix domain socket. The
	   default is taken from the PGHOST environment variable, if set, else a Unix domain
	   socket connection is attempted.

       -l dbname, --database=dbname
	   Specifies the name of the database to connect to to dump global objects and discover
	   what other databases should be dumped. If not specified, the postgres database will be
	   used, and if that does not exist, template1 will be used.

       -p port, --port=port
	   Specifies the TCP port or local Unix domain socket file extension on which the server
	   is listening for connections. Defaults to the PGPORT environment variable, if set, or
	   a compiled-in default.

       -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 pg_dumpall to prompt for a password before connecting to a database.

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

	   Note that the password prompt will occur again for each database to be dumped.
	   Usually, it's better to set up a ~/.pgpass file than to rely on manual password entry.

       --role=rolename
	   Specifies a role name to be used to create the dump. This option causes pg_dumpall to
	   issue a SET ROLE rolename command after connecting to the database. It is useful when
	   the authenticated user (specified by -U) lacks privileges needed by pg_dumpall, but
	   can switch to a role with the required rights. Some installations have a policy
	   against logging in directly as a superuser, and use of this option allows dumps to be
	   made without violating the policy.

ENVIRONMENT
       PGHOST, PGOPTIONS, 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).

NOTES
       Since pg_dumpall calls pg_dump internally, some diagnostic messages will refer to pg_dump.

       Once restored, it is wise to run ANALYZE on each database so the optimizer has useful
       statistics. You can also run vacuumdb -a -z to analyze all databases.

       pg_dumpall requires all needed tablespace directories to exist before the restore;
       otherwise, database creation will fail for databases in non-default locations.

EXAMPLES
       To dump all databases:

	   $ pg_dumpall > db.out

       To reload database(s) from this file, you can use:

	   $ psql -f db.out postgres

       (It is not important to which database you connect here since the script file created by
       pg_dumpall will contain the appropriate commands to create and connect to the saved
       databases.)

SEE ALSO
       Check pg_dump(1) for details on possible error conditions.

PostgreSQL 9.2.7			    2014-02-17				    PG_DUMPALL(1)
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