ALTER 
DATABASE(7)						   SQL Commands 						 ALTER DATABASE(7)

NAME

       ALTER DATABASE - change a database

SYNOPSIS

       ALTER DATABASE name [ [ WITH ] option [ ... ] ]

       where option can be:

	   CONNECTION LIMIT connlimit

       ALTER DATABASE name RENAME TO newname

       ALTER DATABASE name OWNER TO new_owner

       ALTER DATABASE name SET TABLESPACE new_tablespace

       ALTER DATABASE name SET configuration_parameter { TO | = } { value | DEFAULT }
       ALTER DATABASE name SET configuration_parameter FROM CURRENT
       ALTER DATABASE name RESET configuration_parameter
       ALTER DATABASE name RESET ALL

DESCRIPTION

       ALTER DATABASE changes the attributes of a database.

       The first form changes certain per-database settings. (See below for details.) Only the database owner or a superuser can change these set-
       tings.

       The second form changes the name of the database. Only the database owner or a superuser can rename a database; non-superuser  owners  must
       also have the CREATEDB privilege. The current database cannot be renamed. (Connect to a different database if you need to do that.)

       The third form changes the owner of the database.  To alter the owner, you must own the database and also be a direct or indirect member of
       the new owning role, and you must have the CREATEDB privilege.  (Note that superusers have all these privileges automatically.)

       The fourth form changes the default tablespace of the database.	Only the database owner or a superuser can do this;  you  must	also  have
       create  privilege  for the new tablespace.  This command physically moves any tables or indexes in the database's old default tablespace to
       the new tablespace. Note that tables and indexes in non-default tablespaces are not affected.

       The remaining forms change the session default for a run-time configuration variable for a PostgreSQL database. Whenever a new  session	is
       subsequently  started  in  that	database,  the specified value becomes the session default value.  The database-specific default overrides
       whatever setting is present in postgresql.conf or has been received from the postgres command line. Only the database owner or a  superuser
       can change the session defaults for a database. Certain variables cannot be set this way, or can only be set by a superuser.

PARAMETERS

       name   The name of the database whose attributes are to be altered.

       connlimit
	      How many concurrent connections can be made to this database. -1 means no limit.

       newname
	      The new name of the database.

       new_owner
	      The new owner of the database.

       new_tablespace
	      The new default tablespace of the database.

       configuration_parameter

       value  Set  this  database's  session default for the specified configuration parameter to the given value. If value is DEFAULT or, equiva-
	      lently, RESET is used, the database-specific setting is removed, so the system-wide default setting will be inherited  in  new  ses-
	      sions.  Use  RESET ALL to clear all database-specific settings.  SET FROM CURRENT saves the session's current value of the parameter
	      as the database-specific value.

	      See SET [set(7)] and in the documentation for more information about allowed parameter names and values.

NOTES

       It is also possible to tie a session default to a specific role rather than to a database; see ALTER ROLE  [alter_role(7)].   Role-specific
       settings override database-specific ones if there is a conflict.

EXAMPLES

       To disable index scans by default in the database test:

       ALTER DATABASE test SET enable_indexscan TO off;

COMPATIBILITY

       The ALTER DATABASE statement is a PostgreSQL extension.

SEE ALSO

       CREATE DATABASE [create_database(7)], DROP DATABASE [drop_database(7)], SET [set(7)], CREATE TABLESPACE [create_tablespace(7)]

SQL - Language Statements					    2010-05-14							 ALTER DATABASE(7)