alter_database(7)

1ALTER DATABASE()                 SQL Commands                 ALTER DATABASE()
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NAME

6       ALTER DATABASE - change a database
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SYNOPSIS

10       ALTER DATABASE name [ [ WITH ] option [ ... ] ]
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12       where option can be:
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14           CONNECTION LIMIT connlimit
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16       ALTER DATABASE name SET parameter { TO | = } { value | DEFAULT }
17       ALTER DATABASE name RESET parameter
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19       ALTER DATABASE name RENAME TO newname
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21       ALTER DATABASE name OWNER TO new_owner
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DESCRIPTION

25       ALTER DATABASE changes the attributes of a database.
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27       The  first  form  changes certain per-database settings. (See below for
28       details.) Only the database owner or a superuser can change these  set‐
29       tings.
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31       The  second  and  third forms change the session default for a run-time
32       configuration variable for a PostgreSQL database. Whenever a  new  ses‐
33       sion  is  subsequently  started  in  that database, the specified value
34       becomes the session default value.  The database-specific default over‐
35       rides  whatever  setting  is  present  in  postgresql.conf  or has been
36       received from the postgres command line. Only the database owner  or  a
37       superuser can change the session defaults for a database. Certain vari‐
38       ables cannot be set this way, or can only be set by a superuser.
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40       The fourth form changes the name of the  database.  Only  the  database
41       owner  or  a superuser can rename a database; non-superuser owners must
42       also have the  CREATEDB  privilege.  The  current  database  cannot  be
43       renamed. (Connect to a different database if you need to do that.)
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45       The  fifth form changes the owner of the database.  To alter the owner,
46       you must own the database and also be a direct or  indirect  member  of
47       the  new  owning role, and you must have the CREATEDB privilege.  (Note
48       that superusers have all these privileges automatically.)
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PARAMETERS

51       name   The name of the database whose attributes are to be altered.
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53       connlimit
54              How many concurrent connections can be made to this database. -1
55              means no limit.
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57       parameter
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59       value  Set this database's session default for the specified configura‐
60              tion parameter to the given  value.  If  value  is  DEFAULT  or,
61              equivalently,  RESET  is  used, the database-specific setting is
62              removed, so the system-wide default setting will be inherited in
63              new  sessions. Use RESET ALL to clear all database-specific set‐
64              tings.
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66              See SET [set(7)] and in the documentation for  more  information
67              about allowed parameter names and values.
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69       newname
70              The new name of the database.
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72       new_owner
73              The new owner of the database.
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NOTES

76       It  is also possible to tie a session default to a specific user rather
77       than to a database; see ALTER USER [alter_user(7)].  User-specific set‐
78       tings override database-specific ones if there is a conflict.
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EXAMPLES

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

87       The ALTER DATABASE statement is a PostgreSQL extension.
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