PG_DUMPALL(1)		PostgreSQL 9.2.24 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 option is recommended when
	   dumping a database from a server whose PostgreSQL major version is
	   different from pg_dumpall's, or when the output is intended to be
	   loaded into a server of a different major version. By default,
	   pg_dumpall quotes only identifiers that are reserved words in its
	   own major version. This sometimes results in compatibility issues
	   when dealing with servers of other versions that may have slightly
	   different sets of reserved words. Using --quote-all-identifiers
	   prevents such issues, at the price of a harder-to-read dump script.

       --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 ROLErolename 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 9.2.24		  2017-11-06			 PG_DUMPALL(1)