ALTER_DATABASE(7)

1ALTER DATABASE(7)       PostgreSQL 9.2.24 Documentation      ALTER DATABASE(7)
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NAME

6       ALTER_DATABASE - change a database
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SYNOPSIS

9       ALTER DATABASE name [ [ WITH ] option [ ... ] ]
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11       where option can be:
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13           CONNECTION LIMIT connlimit
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15       ALTER DATABASE name RENAME TO new_name
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17       ALTER DATABASE name OWNER TO new_owner
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19       ALTER DATABASE name SET TABLESPACE new_tablespace
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21       ALTER DATABASE name SET configuration_parameter { TO | = } { value | DEFAULT }
22       ALTER DATABASE name SET configuration_parameter FROM CURRENT
23       ALTER DATABASE name RESET configuration_parameter
24       ALTER DATABASE name RESET ALL
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DESCRIPTION

27       ALTER DATABASE changes the attributes of a database.
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29       The first form changes certain per-database settings. (See below for
30       details.) Only the database owner or a superuser can change these
31       settings.
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33       The second form changes the name of the database. Only the database
34       owner or a superuser can rename a database; non-superuser owners must
35       also have the CREATEDB privilege. The current database cannot be
36       renamed. (Connect to a different database if you need to do that.)
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38       The third form changes the owner of the database. To alter the owner,
39       you must own the database and also be a direct or indirect member of
40       the new owning role, and you must have the CREATEDB privilege. (Note
41       that superusers have all these privileges automatically.)
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43       The fourth form changes the default tablespace of the database. Only
44       the database owner or a superuser can do this; you must also have
45       create privilege for the new tablespace. This command physically moves
46       any tables or indexes in the database's old default tablespace to the
47       new tablespace. Note that tables and indexes in non-default tablespaces
48       are not affected.
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50       The remaining forms change the session default for a run-time
51       configuration variable for a PostgreSQL database. Whenever a new
52       session is subsequently started in that database, the specified value
53       becomes the session default value. The database-specific default
54       overrides whatever setting is present in postgresql.conf or has been
55       received from the postgres command line. Only the database owner or a
56       superuser can change the session defaults for a database. Certain
57       variables cannot be set this way, or can only be set by a superuser.
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PARAMETERS

60       name
61           The name of the database whose attributes are to be altered.
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63       connlimit
64           How many concurrent connections can be made to this database. -1
65           means no limit.
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67       new_name
68           The new name of the database.
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70       new_owner
71           The new owner of the database.
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73       new_tablespace
74           The new default tablespace of the database.
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76       configuration_parameter, value
77           Set this database's session default for the specified configuration
78           parameter to the given value. If value is DEFAULT or, equivalently,
79           RESET is used, the database-specific setting is removed, so the
80           system-wide default setting will be inherited in new sessions. Use
81           RESET ALL to clear all database-specific settings.  SET FROM
82           CURRENT saves the session's current value of the parameter as the
83           database-specific value.
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85           See SET(7) and Chapter 18, Server Configuration, in the
86           documentation for more information about allowed parameter names
87           and values.
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NOTES

90       It is also possible to tie a session default to a specific role rather
91       than to a database; see ALTER ROLE (ALTER_ROLE(7)). Role-specific
92       settings override database-specific ones if there is a conflict.
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EXAMPLES

95       To disable index scans by default in the database test:
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97           ALTER DATABASE test SET enable_indexscan TO off;
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COMPATIBILITY

100       The ALTER DATABASE statement is a PostgreSQL extension.
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