</para>

</sect1>

<sect1 id="default-roles">

<title>Default Roles</title>

<sect1 id="predefined-roles">

<title>Predefined Roles</title>

<indexterm zone="default-roles">

<indexterm zone="predefined-roles">

<primary>role</>

</indexterm>

<para>

<productname>PostgreSQL</productname> provides a set ofdefault roles

whichprovide access tocertain, commonly needed,privileged capabilities

and information.Administrators can GRANT these roles tousers and/or

other roles in their environment,providing thoseusers with access to

the specified capabilities andinformation.

<productname>PostgreSQL</productname> provides a set ofpredefined

roleswhichallow access to privileged capabilities and information.

Administrators can GRANT these roles tologin and non-login roles,

providing thoseroles with access to the specified capabilities and

information.

</para>

<para>

Thedefault roles are described in <xref linkend="default-roles-table">.

Note that the specific permissions for each of thedefault roles may

Thepredefined roles are described in <xref linkend="predefined-roles-table">.

Note that the specific permissions for each of thepredefined roles may

change in the future as additional capabilities are added. Administrators

should monitor the release notes for changes.

</para>

<table tocentry="1" id="default-roles-table">

<title>Default Roles</title>

<table tocentry="1" id="predefined-roles-table">

<title>Predefined Roles</title>

<tgroup cols="2">

<thead>

<row>

<literal>pg_read_all_stats</literal> and <literal>pg_stat_scan_tables</literal>

roles are intended to allow administrators to easily configure a role for the

purpose of monitoring the database server. They grant a set of common privileges

allowing the role to readvarious usefulconfiguration settings, statistics and

othersystem information normally restricted to superusers.

allowing the role to read configuration settings, statistics, and other

system information normally restricted to superusers.

</para>

<para>