mirror of
https://github.com/postgres/postgres.git
synced 2025-10-31 00:03:57 -04:00
Indent markup using emacs.
This commit is contained in:
Thomas G. Lockhart
parent
1def28ff20
commit
f8aa366ddd
@ -1,174 +1,170 @@
|
||||
<Chapter Id="manage">
|
||||
<Title>Managing a Database</Title>
|
||||
<Chapter Id="manage">
|
||||
<Title>Managing a Database</Title>
|
||||
|
||||
<Para>
|
||||
<Note>
|
||||
<Para>
|
||||
This section is currently a thinly disguised copy of the Tutorial. Needs to be augmented.
|
||||
- thomas 1998-01-12
|
||||
</Para>
|
||||
</Note>
|
||||
</Para>
|
||||
<Note>
|
||||
<Para>
|
||||
This section is currently a thinly disguised copy of the
|
||||
Tutorial. Needs to be augmented.
|
||||
- thomas 1998-01-12
|
||||
</Para>
|
||||
</Note>
|
||||
|
||||
<Para>
|
||||
Although the <FirstTerm>site administrator</FirstTerm> is responsible for overall management
|
||||
of the <ProductName>Postgres</ProductName> installation, some databases within the
|
||||
installation may be managed by another person,
|
||||
designated the <FirstTerm>database administrator</FirstTerm>.
|
||||
This assignment of responsibilities occurs when a database is created.
|
||||
A user may be assigned explicit privileges to create databases and/or to create new users.
|
||||
A user assigned both privileges can perform most administrative task
|
||||
within <ProductName>Postgres</ProductName>, but will
|
||||
not by default have the same operating system privileges as the site administrator.
|
||||
</Para>
|
||||
<Para>
|
||||
Although the <FirstTerm>site administrator</FirstTerm> is responsible for overall management
|
||||
of the <ProductName>Postgres</ProductName> installation, some databases within the
|
||||
installation may be managed by another person,
|
||||
designated the <FirstTerm>database administrator</FirstTerm>.
|
||||
This assignment of responsibilities occurs when a database is created.
|
||||
A user may be assigned explicit privileges to create databases and/or to create new users.
|
||||
A user assigned both privileges can perform most administrative task
|
||||
within <ProductName>Postgres</ProductName>, but will
|
||||
not by default have the same operating system privileges as the site administrator.
|
||||
</Para>
|
||||
|
||||
<Para>
|
||||
The Database Administrator's Guide covers these topics in more detail.
|
||||
</Para>
|
||||
<Para>
|
||||
The Database Administrator's Guide covers these topics in more detail.
|
||||
</Para>
|
||||
|
||||
<Sect1>
|
||||
<Title>Database Creation</Title>
|
||||
<Sect1>
|
||||
<Title>Database Creation</Title>
|
||||
|
||||
<Para>
|
||||
Databases are created by the <Command>create database</Command> issued from
|
||||
within <ProductName>Postgres</ProductName>. <Application>createdb</Application> is a command-line
|
||||
utility provided to give the same functionality from outside <ProductName>Postgres</ProductName>.
|
||||
</Para>
|
||||
<Para>
|
||||
Databases are created by the <Command>create database</Command> issued from
|
||||
within <ProductName>Postgres</ProductName>. <Application>createdb</Application> is a command-line
|
||||
utility provided to give the same functionality from outside <ProductName>Postgres</ProductName>.
|
||||
</Para>
|
||||
|
||||
<Para>
|
||||
The <ProductName>Postgres</ProductName> backend must be running for either method
|
||||
to succeed, and the user issuing the command must be the <ProductName>Postgres</ProductName>
|
||||
<FirstTerm>superuser</FirstTerm> or have been assigned database creation privileges by the
|
||||
superuser.
|
||||
</Para>
|
||||
<Para>
|
||||
The <ProductName>Postgres</ProductName> backend must be running for either method
|
||||
to succeed, and the user issuing the command must be the <ProductName>Postgres</ProductName>
|
||||
<FirstTerm>superuser</FirstTerm> or have been assigned database creation privileges by the
|
||||
superuser.
|
||||
</Para>
|
||||
|
||||
<Para>
|
||||
To create a new database named <Quote>mydb</Quote> from the command line, type
|
||||
<ProgramListing>
|
||||
<Para>
|
||||
To create a new database named <Quote>mydb</Quote> from the command line, type
|
||||
<ProgramListing>
|
||||
% createdb mydb
|
||||
</ProgramListing>
|
||||
</ProgramListing>
|
||||
|
||||
and to do the same from within <Application>psql</Application> type
|
||||
<ProgramListing>
|
||||
and to do the same from within <Application>psql</Application> type
|
||||
<ProgramListing>
|
||||
* CREATE DATABASE mydb;
|
||||
</ProgramListing>
|
||||
</Para>
|
||||
</ProgramListing>
|
||||
</Para>
|
||||
|
||||
<Para>
|
||||
If you do not have the privileges required to create a database, you will see
|
||||
the following:
|
||||
<ProgramListing>
|
||||
<Para>
|
||||
If you do not have the privileges required to create a database, you will see
|
||||
the following:
|
||||
<ProgramListing>
|
||||
% createdb mydb
|
||||
WARN:user "your username" is not allowed to create/destroy databases
|
||||
createdb: database creation failed on mydb.
|
||||
</ProgramListing>
|
||||
</Para>
|
||||
</ProgramListing>
|
||||
</Para>
|
||||
|
||||
<Para>
|
||||
<ProductName>Postgres</ProductName> allows you to create any number of databases
|
||||
at a given site and you automatically become the
|
||||
database administrator of the database you just created.
|
||||
Database names must have an alphabetic first
|
||||
character and are limited to 32 characters in length.
|
||||
</Para>
|
||||
<Para>
|
||||
<ProductName>Postgres</ProductName> allows you to create any number of databases
|
||||
at a given site and you automatically become the
|
||||
database administrator of the database you just created.
|
||||
Database names must have an alphabetic first
|
||||
character and are limited to 32 characters in length.
|
||||
</Para>
|
||||
|
||||
</Sect1>
|
||||
</Sect1>
|
||||
|
||||
<Sect1>
|
||||
<Title>Alternate Database Locations</Title>
|
||||
<Sect1>
|
||||
<Title>Alternate Database Locations</Title>
|
||||
|
||||
<Para>
|
||||
It is possible to create a database in a location other than the default
|
||||
location for the installation. Remember that all database access actually
|
||||
occurs through the database backend, so that any location specified must
|
||||
be accessible by the backend.
|
||||
</Para>
|
||||
<Para>
|
||||
It is possible to create a database in a location other than the default
|
||||
location for the installation. Remember that all database access actually
|
||||
occurs through the database backend, so that any location specified must
|
||||
be accessible by the backend.
|
||||
</Para>
|
||||
|
||||
<Para>
|
||||
Alternate database locations are created and referenced by an environment variable
|
||||
which gives the absolute path to the intended storage location.
|
||||
This environment variable must have been defined before the backend was started
|
||||
and the location it points to must be writable by the postgres administrator account.
|
||||
Consult with the site administrator
|
||||
regarding preconfigured alternate database locations.
|
||||
Any valid environment variable name may be used to reference an alternate location,
|
||||
although using variable names with a prefix of <quote>PGDATA</quote> is recommended
|
||||
to avoid confusion
|
||||
and conflict with other variables.
|
||||
</Para>
|
||||
<Para>
|
||||
Alternate database locations are created and referenced by an environment variable
|
||||
which gives the absolute path to the intended storage location.
|
||||
This environment variable must have been defined before the backend was started
|
||||
and the location it points to must be writable by the postgres administrator account.
|
||||
Consult with the site administrator
|
||||
regarding preconfigured alternate database locations.
|
||||
Any valid environment variable name may be used to reference an alternate location,
|
||||
although using variable names with a prefix of <quote>PGDATA</quote> is recommended
|
||||
to avoid confusion
|
||||
and conflict with other variables.
|
||||
</Para>
|
||||
|
||||
<Note>
|
||||
<Para>
|
||||
In previous versions of <ProductName>Postgres</ProductName>,
|
||||
it was also permissable to use an absolute path name to specify
|
||||
an alternate storage location.
|
||||
Although the environment variable style of specification
|
||||
is to be preferred since it allows the site administrator more flexibility in
|
||||
managing disk storage, it is also possible to use an absolute path
|
||||
to specify an alternate location.
|
||||
The administrator's guide discusses how to enable this feature.
|
||||
</Para>
|
||||
</Note>
|
||||
<Note>
|
||||
<Para>
|
||||
In previous versions of <ProductName>Postgres</ProductName>,
|
||||
it was also permissable to use an absolute path name to specify
|
||||
an alternate storage location.
|
||||
Although the environment variable style of specification
|
||||
is to be preferred since it allows the site administrator more flexibility in
|
||||
managing disk storage, it is also possible to use an absolute path
|
||||
to specify an alternate location.
|
||||
The administrator's guide discusses how to enable this feature.
|
||||
</Para>
|
||||
</Note>
|
||||
|
||||
<Para>
|
||||
For security and integrity reasons,
|
||||
any path or environment variable specified has some
|
||||
additional path fields appended.
|
||||
</Para>
|
||||
<Para>
|
||||
For security and integrity reasons,
|
||||
any path or environment variable specified has some
|
||||
additional path fields appended.
|
||||
Alternate database locations must be prepared by running
|
||||
<Application>initlocation</Application>.
|
||||
</Para>
|
||||
|
||||
<Para>
|
||||
Alternate database locations must be prepared by running
|
||||
<Application>initlocation</Application>.
|
||||
</Para>
|
||||
|
||||
<Para>
|
||||
To create a data storage area using the environment variable
|
||||
<envar>PGDATA2</envar> (for this example set to <filename>/alt/postgres</filename>),
|
||||
ensure that <FileName>/alt/postgres</FileName> already exists and is writable by
|
||||
the Postgres administrator account.
|
||||
Then, from the command line, type
|
||||
<ProgramListing>
|
||||
<Para>
|
||||
To create a data storage area using the environment variable
|
||||
<envar>PGDATA2</envar> (for this example set to <filename>/alt/postgres</filename>),
|
||||
ensure that <FileName>/alt/postgres</FileName> already exists and is writable by
|
||||
the Postgres administrator account.
|
||||
Then, from the command line, type
|
||||
<ProgramListing>
|
||||
% initlocation $PGDATA2
|
||||
Creating Postgres database system directory /alt/postgres/data
|
||||
Creating Postgres database system directory /alt/postgres/data/base
|
||||
</ProgramListing>
|
||||
</Para>
|
||||
</ProgramListing>
|
||||
</Para>
|
||||
|
||||
<Para>
|
||||
To create a database in the alternate storage area <envar>PGDATA2</envar>
|
||||
from the command line, use the following command:
|
||||
<ProgramListing>
|
||||
<Para>
|
||||
To create a database in the alternate storage area <envar>PGDATA2</envar>
|
||||
from the command line, use the following command:
|
||||
<ProgramListing>
|
||||
% createdb -D PGDATA2 mydb
|
||||
</ProgramListing>
|
||||
</ProgramListing>
|
||||
|
||||
To do the same from within <Application>psql</Application> type
|
||||
<ProgramListing>
|
||||
and to do the same from within <Application>psql</Application> type
|
||||
<ProgramListing>
|
||||
* CREATE DATABASE mydb WITH LOCATION = 'PGDATA2';
|
||||
</ProgramListing>
|
||||
</Para>
|
||||
</ProgramListing>
|
||||
</Para>
|
||||
|
||||
<Para>
|
||||
If you do not have the privileges required to create a database, you will see
|
||||
the following:
|
||||
<ProgramListing>
|
||||
<Para>
|
||||
If you do not have the privileges required to create a database, you will see
|
||||
the following:
|
||||
<ProgramListing>
|
||||
% createdb mydb
|
||||
WARN:user "your username" is not allowed to create/destroy databases
|
||||
createdb: database creation failed on mydb.
|
||||
</ProgramListing>
|
||||
</Para>
|
||||
</ProgramListing>
|
||||
</Para>
|
||||
|
||||
<Para>
|
||||
If the specified location does not exist or the database backend does not have
|
||||
permission to access it or to write to directories under it, you will see
|
||||
the following:
|
||||
<ProgramListing>
|
||||
<Para>
|
||||
If the specified location does not exist or the database backend does not have
|
||||
permission to access it or to write to directories under it, you will see
|
||||
the following:
|
||||
<ProgramListing>
|
||||
% createdb -D /alt/postgres/data mydb
|
||||
ERROR: Unable to create database directory /alt/postgres/data/base/mydb
|
||||
createdb: database creation failed on mydb.
|
||||
</ProgramListing>
|
||||
</Para>
|
||||
</ProgramListing>
|
||||
</Para>
|
||||
|
||||
</Sect1>
|
||||
</Sect1>
|
||||
|
||||
<Sect1>
|
||||
<Title>Accessing a Database</Title>
|
||||
@ -296,3 +292,20 @@ TBD
|
||||
</Sect1>
|
||||
|
||||
</Chapter>
|
||||
|
||||
<!-- Keep this comment at the end of the file
|
||||
Local variables:
|
||||
mode: sgml
|
||||
sgml-omittag:nil
|
||||
sgml-shorttag:t
|
||||
sgml-minimize-attributes:nil
|
||||
sgml-always-quote-attributes:t
|
||||
sgml-indent-step:1
|
||||
sgml-indent-data:t
|
||||
sgml-parent-document:nil
|
||||
sgml-default-dtd-file:"./reference.ced"
|
||||
sgml-exposed-tags:nil
|
||||
sgml-local-catalogs:"/usr/lib/sgml/CATALOG"
|
||||
sgml-local-ecat-files:nil
|
||||
End:
|
||||
-->
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user