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Add per-user and per-database connection limit options.

This patch also includes preliminary update of pg_dumpall for roles.
Petr Jelinek, with review by Bruce Momjian and Tom Lane.
This commit is contained in:
Tom Lane
2005-07-31 17:19:22 +00:00
parent b125877107
commit d42cf5a42a
30 changed files with 783 additions and 180 deletions

View File

@@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/ref/create_database.sgml,v 1.43 2004/10/29 03:17:22 neilc Exp $
$PostgreSQL: pgsql/doc/src/sgml/ref/create_database.sgml,v 1.44 2005/07/31 17:19:17 tgl Exp $
PostgreSQL documentation
-->
@@ -24,7 +24,8 @@ CREATE DATABASE <replaceable class="PARAMETER">name</replaceable>
[ [ WITH ] [ OWNER [=] <replaceable class="parameter">dbowner</replaceable> ]
[ TEMPLATE [=] <replaceable class="parameter">template</replaceable> ]
[ ENCODING [=] <replaceable class="parameter">encoding</replaceable> ]
[ TABLESPACE [=] <replaceable class="parameter">tablespace</replaceable> ] ]
[ TABLESPACE [=] <replaceable class="parameter">tablespace</replaceable> ]
[ CONNECTION LIMIT [=] <replaceable class="parameter">connlimit</replaceable> ] ]
</synopsis>
</refsynopsisdiv>
@@ -123,6 +124,16 @@ CREATE DATABASE <replaceable class="PARAMETER">name</replaceable>
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">connlimit</replaceable></term>
<listitem>
<para>
How many concurrent connections can be made
to this database. -1 (the default) means no limit.
</para>
</listitem>
</varlistentry>
</variablelist>
<para>
@@ -161,6 +172,13 @@ CREATE DATABASE <replaceable class="PARAMETER">name</replaceable>
We recommend that databases used as templates be treated as read-only.
See <xref linkend="manage-ag-templatedbs"> for more information.
</para>
<para>
The <literal>CONNECTION LIMIT</> option is only enforced approximately;
if two new sessions start at about the same time when just one
connection <quote>slot</> remains for the database, it is possible that
both will fail. Also, the limit is not enforced against superusers.
</para>
</refsect1>
<refsect1>