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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 settings.

       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 supe-
       rusers 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, equivalently, RESET is used, the database-specific setting is removed, so the  sys-
              tem-wide default setting will be inherited in new sessions. 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 [cre-
       ate_tablespace(7)]



SQL - Language Statements         2014-02-17                 ALTER DATABASE(7)