-<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.617 2009/03/30 19:59:19 momjian Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.618 2009/03/30 20:32:49 momjian Exp $ -->
<!--
Typical markup:
<para>
This was available previously via a configure
- --enable-integer-datetimes.
+ --enable-integer-datetimes option.
</para>
</listitem>
+ <listitem>
+ <para>
+ Remove <application>ipcclean</> utility command (Bruce)
+ </para>
+
+ <para>
+ The utility only worked on a few platforms; users should use
+ their operating system tools instead.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect3>
+
+ <sect3>
+ <title>Server Settings</title>
+ <itemizedlist>
+
<listitem>
<para>
Change <filename>postgresql.conf</> default for log_min_messages
<listitem>
<para>
- Remove <application>ipcclean</> utility command (Bruce)
- </para>
-
- <para>
- The utility only worked on a few platforms; users should use
- their operating system tools instead.
- </para>
- </listitem>
-
- <listitem>
- <para>
- The <filename>pg_hba.conf</> section below also has extensive
- changes related to migration.
+ The <link
+ linkend="release-8-4-pg-hba-conf"><filename>pg_hba.conf</></link>
+ section below also has extensive changes related to migration.
</para>
</listitem>
<sect3>
- <title>Functions and Operators</title>
+ <title>General Functions and Operators</title>
<itemizedlist>
</para>
</listitem>
+ <listitem>
+ <para>
+ Remove <literal>~=~</> and <literal>~<>~</> operators
+ used for <literal>LIKE</> index comparisons (Tom) bjm: needed,
+ pg_upgrade impact?
+ </para>
+
+ <para>
+ A not-immediately-obvious incompatibility is that the sort
+ order within <literal>bpchar_pattern_ops</> indexes changes
+ --- it had been identical to plain <function>strcmp()</>, but
+ is now trailing-blank-insensitive. This will impact in-place
+ upgrades, if those ever happen.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect3>
+
+ <sect3>
+ <title>Temporal Functions and Operators</title>
+
+ <itemizedlist>
+
<listitem>
<para>
Have <function>to_char()</>'s localized month/day names depend
</para>
</listitem>
- <listitem>
- <para>
- Remove <literal>~=~</> and <literal>~<>~</> operators
- used for <literal>LIKE</> index comparisons (Tom) bjm: needed,
- pg_upgrade impact?
- </para>
-
- <para>
- A not-immediately-obvious incompatibility is that the sort
- order within <literal>bpchar_pattern_ops</> indexes changes
- --- it had been identical to plain <function>strcmp()</>, but
- is now trailing-blank-insensitive. This will impact in-place
- upgrades, if those ever happen.
- </para>
- </listitem>
-
</itemizedlist>
</sect3>
</sect3>
<sect3>
- <title>Wide-Value Storage (<acronym>TOAST</>)</title>
+ <title>Server Settings</title>
<itemizedlist>
<listitem>
<para>
- Consider <acronym>TOAST</> compression on values as short as
- 32 bytes (previously 256 bytes) (Tom)
+ Convert many <filename>postgresql.conf</> settings to enumerated
+ values so <literal>pg_settings</> can easily display valid
+ values (Magnus)
</para>
</listitem>
<listitem>
<para>
- Require 25% of space savings before using <acronym>TOAST</>
- compression (previously 20%) (Tom)
+ Add <varname>cursor_tuple_fraction</> parameter to control the
+ fraction of a cursor's rows expected to be requested by the
+ user (Robert Hell)
</para>
</listitem>
<listitem>
<para>
- Be more aggressive in storing <literal>EXTERNAL</> and
- <literal>EXTENDED</> column values in <acronym>TOAST</>(Tom)
+ Allow underscores in <filename>postgresql.conf</> custom variable
+ classes (Tom)
</para>
</listitem>
</sect3>
<sect3>
- <title>Server Settings</title>
+ <title>Authentication</title>
<itemizedlist>
<listitem>
<para>
- Convert many <filename>postgresql.conf</> settings to enumerated
- values so <literal>pg_settings</> can easily display valid
- values (Magnus)
+ Report appropriate error message for combination of <literal>MD5</>
+ authentication and <varname>db_user_namespace</> enabled (Bruce)
</para>
</listitem>
<listitem>
<para>
- Add <varname>cursor_tuple_fraction</> parameter to control the
- fraction of a cursor's rows expected to be requested by the
- user (Robert Hell)
+ Support regular expressions in <filename>pg_ident.conf</>
+ (Magnus)
</para>
</listitem>
<listitem>
<para>
- Allow underscores in <filename>postgresql.conf</> custom variable
- classes (Tom)
+ Allow <productname>Kerberos</>/<acronym>GSSAPI</> parameters
+ to be changed without restarting the postmaster (Magnus)
</para>
</listitem>
</sect3>
- <sect3>
- <title>Monitoring</title>
+ <sect3 id="release-8-4-pg-hba-conf">
+ <title><filename>pg_hba.conf</></title>
<itemizedlist>
<listitem>
<para>
- Add <function>pg_conf_load_time()</> to report when
- the Postgres configuration files were last loaded (George
- Gensure)
+ Parse <filename>pg_hba.conf</> in the postmaster so errors are
+ reported on reload (Magnus)
+ </para>
+
+ <para>
+ Previously errors in the file wouldn't be detected until clients
+ tried to connect, which could leave the system with a broken
+ file loaded.
</para>
</listitem>
<listitem>
<para>
- Add <function>pg_terminate_backend()</> to safely terminate a
- backend (the <literal>SIGTERM</> signal works also) (Tom, Bruce)
+ Remove the <literal>sameuser</> option, making it the default
+ if no usermap is specified (Magnus)
</para>
</listitem>
<listitem>
<para>
- Add ability to track user-defined functions call counts and
- runtimes via parameter <varname>track_functions</> (Martin
- Pihlak)
+ Change all authentication options to be <literal>name=value</>
+ settings (Magnus)
</para>
-
+ </listitem>
+
+ <listitem>
<para>
- Function statistics appear in a new system table,
- <literal>pg_stat_user_functions</>. However, inlined
- <acronym>SQL</> functions are not tracked.
+ Allow usermap parameter for all external authentication methods
+ (Magnus)
+ </para>
+
+ <para>
+ Previously this was only supported for <literal>ident</>
+ authentication.
</para>
</listitem>
<listitem>
<para>
- Allow specification of the maximum <literal>pg_stat_activity</>
- query string size via <varname>track_activity_query_size</>
- parameter (Thomas Lee)
+ Allow <literal>ident</> authentication over Unix-domain sockets
+ on <productname>Solaris</> (Garick Hamlin)
</para>
</listitem>
<listitem>
<para>
- Improve syslog performance by increasing the maximum line length
- (Tom)
+ Add <literal>clientcert</> option to control requesting of a
+ client certificate (Magnus)
</para>
- </listitem>
- <listitem>
<para>
- Add read-only <filename>postgresql.conf</> variables <varname>segment_size</>,
- <varname>wal_block_size</>, and <varname>wal_segment_size</> (Bernd Helmle)
+ Previously this was controlled by the presence of a root
+ certificate file in the server's data directory.
</para>
</listitem>
<listitem>
<para>
- When reporting a deadlock, report all session queries involved
- in the deadlock to the server log (Itagaki Takahiro)
+ Add <literal>cert</> authentication method to allow user
+ authentication via <acronym>SSL</> certificates (Magnus)
+ </para>
+
+ <para>
+ Previously <acronym>SSL</> certificates could only verify that
+ the client had access to a certificate, not authenticate a
+ user.
</para>
</listitem>
<listitem>
<para>
- New <function>pg_stat_get_activity(pid)</> function to return
- information about a specific process id (Magnus)
+ Allow <literal>krb5</>, <literal>gssapi</> and <literal>sspi</>
+ realm and <literal>krb5</> host settings to be specified in
+ <filename>pg_hba.conf</> (Magnus)
+ </para>
+
+ <para>
+ These override the settings in <filename>postgresql.conf</>.
</para>
</listitem>
<listitem>
<para>
- Move the server statistics file into the subdirectory
- <filename>pg_stat_tmp</> and allow its location to be specified
- via <varname>stats_temp_directory</> (Magnus)
+ Add <literal>krb5</>, <literal>gssapi</>, and <literal>sspi</>
+ <varname>include_realm</> parameter (Magnus)
</para>
<para>
- This allows the statistics file to be placed in a
- <acronym>RAM</>-resident directory to reduce I/O requirements.
- On startup/shutdown, the file is copied to the top-level
- <literal>$PGDATA</> directory so it is preserved between
- restarts.
+ This allows identical usernames from different realms to be
+ authenticated as different database users using usermaps.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Show all parsing errors instead of aborting after the first
+ one (Selena Deckelmann)
</para>
</listitem>
</sect3>
<sect3>
- <title>Authentication</title>
+ <title>Monitoring</title>
<itemizedlist>
<listitem>
<para>
- Report appropriate error message for combination of <literal>MD5</>
- authentication and <varname>db_user_namespace</> enabled (Bruce)
- </para>
- </listitem>
-
- <listitem>
- <para>
- Support regular expressions in <filename>pg_ident.conf</>
- (Magnus)
+ Add <function>pg_conf_load_time()</> to report when
+ the Postgres configuration files were last loaded (George
+ Gensure)
</para>
</listitem>
<listitem>
<para>
- Allow <productname>Kerberos</>/<acronym>GSSAPI</> parameters
- to be changed without restarting the postmaster (Magnus)
+ Add <function>pg_terminate_backend()</> to safely terminate a
+ backend (the <literal>SIGTERM</> signal works also) (Tom, Bruce)
</para>
</listitem>
- </itemizedlist>
-
- </sect3>
-
- <sect3>
- <title><filename>pg_hba.conf</></title>
- <itemizedlist>
-
<listitem>
<para>
- Parse <filename>pg_hba.conf</> in the postmaster so errors are
- reported on reload (Magnus)
- </para>
-
- <para>
- Previously errors in the file wouldn't be detected until clients
- tried to connect, which could leave the system with a broken
- file loaded.
+ Add ability to track user-defined functions call counts and
+ runtimes via parameter <varname>track_functions</> (Martin
+ Pihlak)
</para>
- </listitem>
- <listitem>
<para>
- Remove the <literal>sameuser</> option, making it the default
- if no usermap is specified (Magnus)
+ Function statistics appear in a new system table,
+ <literal>pg_stat_user_functions</>. However, inlined
+ <acronym>SQL</> functions are not tracked.
</para>
</listitem>
<listitem>
<para>
- Change all authentication options to be <literal>name=value</>
- settings (Magnus)
- </para>
- </listitem>
-
- <listitem>
- <para>
- Allow usermap parameter for all external authentication methods
- (Magnus)
- </para>
-
- <para>
- Previously this was only supported for <literal>ident</>
- authentication.
+ Allow specification of the maximum <literal>pg_stat_activity</>
+ query string size via <varname>track_activity_query_size</>
+ parameter (Thomas Lee)
</para>
</listitem>
<listitem>
<para>
- Allow <literal>ident</> authentication over Unix-domain sockets
- on <productname>Solaris</> (Garick Hamlin)
+ Improve syslog performance by increasing the maximum line length
+ (Tom)
</para>
</listitem>
<listitem>
<para>
- Add <literal>clientcert</> option to control requesting of a
- client certificate (Magnus)
- </para>
-
- <para>
- Previously this was controlled by the presence of a root
- certificate file in the server's data directory.
+ Add read-only <filename>postgresql.conf</> variables <varname>segment_size</>,
+ <varname>wal_block_size</>, and <varname>wal_segment_size</> (Bernd Helmle)
</para>
</listitem>
<listitem>
<para>
- Add <literal>cert</> authentication method to allow user
- authentication via <acronym>SSL</> certificates (Magnus)
- </para>
-
- <para>
- Previously <acronym>SSL</> certificates could only verify that
- the client had access to a certificate, not authenticate a
- user.
+ When reporting a deadlock, report all session queries involved
+ in the deadlock to the server log (Itagaki Takahiro)
</para>
</listitem>
<listitem>
<para>
- Allow <literal>krb5</>, <literal>gssapi</> and <literal>sspi</>
- realm and <literal>krb5</> host settings to be specified in
- <filename>pg_hba.conf</> (Magnus)
- </para>
-
- <para>
- These override the settings in <filename>postgresql.conf</>.
+ New <function>pg_stat_get_activity(pid)</> function to return
+ information about a specific process id (Magnus)
</para>
</listitem>
<listitem>
<para>
- Add <literal>krb5</>, <literal>gssapi</>, and <literal>sspi</>
- <varname>include_realm</> parameter (Magnus)
- </para>
-
- <para>
- This allows identical usernames from different realms to be
- authenticated as different database users using usermaps.
+ Move the server statistics file into the subdirectory
+ <filename>pg_stat_tmp</> and allow its location to be specified
+ via <varname>stats_temp_directory</> (Magnus)
</para>
- </listitem>
- <listitem>
<para>
- Show all parsing errors instead of aborting after the first
- one (Selena Deckelmann)
+ This allows the statistics file to be placed in a
+ <acronym>RAM</>-resident directory to reduce I/O requirements.
+ On startup/shutdown, the file is copied to the top-level
+ <literal>$PGDATA</> directory so it is preserved between
+ restarts.
</para>
</listitem>
<listitem>
<para>
- Improve the parser's ability to report the error location of
- a query (Tom)
+ Improve the parser's ability to report error locations (Tom)
</para>
</listitem>
</sect3>
+ <sect3>
+ <title>Wide-Value Storage (<acronym>TOAST</>)</title>
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Consider <acronym>TOAST</> compression on values as short as
+ 32 bytes (previously 256 bytes) (Tom)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Require 25% of space savings before using <acronym>TOAST</>
+ compression (previously 20%) (Tom)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Be more aggressive in storing <literal>EXTERNAL</> and
+ <literal>EXTENDED</> column values in <acronym>TOAST</>(Tom)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect3>
+
<sect3>
<title>General Functions</title>
<itemizedlist>
projects / users / rhaas / postgres.git / commitdiff