Release notes for 9.6.2, 9.5.6, 9.4.11, 9.3.16, 9.2.20.

3 files changed, 1393 insertions, 0 deletions

diff --git a/doc/src/sgml/release-9.2.sgml b/doc/src/sgml/release-9.2.sgml
index 49430389d95..2e24b778a89 100644
--- a/doc/src/sgml/release-9.2.sgml
+++ b/doc/src/sgml/release-9.2.sgml
@@ -1,6 +1,418 @@
 <!-- doc/src/sgml/release-9.2.sgml -->
 <!-- See header comment in release.sgml about typical markup -->
 
+ <sect1 id="release-9-2-20">
+  <title>Release 9.2.20</title>
+
+  <note>
+  <title>Release Date</title>
+  <simpara>2017-02-09</simpara>
+  </note>
+
+  <para>
+   This release contains a variety of fixes from 9.2.19.
+   For information about new features in the 9.2 major release, see
+   <xref linkend="release-9-2">.
+  </para>
+
+  <sect2>
+   <title>Migration to Version 9.2.20</title>
+
+   <para>
+    A dump/restore is not required for those running 9.2.X.
+   </para>
+
+   <para>
+    However, if your installation has been affected by the bug described in
+    the first changelog entry below, then after updating you may need
+    to take action to repair corrupted indexes.
+   </para>
+
+   <para>
+    Also, if you are upgrading from a version earlier than 9.2.11,
+    see <xref linkend="release-9-2-11">.
+   </para>
+
+  </sect2>
+
+  <sect2>
+   <title>Changes</title>
+
+   <itemizedlist>
+
+    <listitem>
+     <para>
+      Fix a race condition that could cause indexes built
+      with <command>CREATE INDEX CONCURRENTLY</> to be corrupt
+      (Pavan Deolasee, Tom Lane)
+     </para>
+
+     <para>
+      If <command>CREATE INDEX CONCURRENTLY</> was used to build an index
+      that depends on a column not previously indexed, then rows inserted
+      or updated by transactions that ran concurrently with
+      the <command>CREATE INDEX</> command could have received incorrect
+      index entries.  If you suspect this may have happened, the most
+      reliable solution is to rebuild affected indexes after installing
+      this update.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Unconditionally WAL-log creation of the <quote>init fork</> for an
+      unlogged table (Michael Paquier)
+     </para>
+
+     <para>
+      Previously, this was skipped when <xref linkend="guc-wal-level">
+      = <literal>minimal</>, but actually it's necessary even in that case
+      to ensure that the unlogged table is properly reset to empty after a
+      crash.
+     </para>
+    </listitem>
+
+    <listitem>
+<!--
+Author: Fujii Masao <fujii@postgresql.org>
+Branch: REL9_2_STABLE [38bec1805] 2017-01-25 07:02:25 +0900
+-->
+     <para>
+      Fix WAL page header validation when re-reading segments (Takayuki
+      Tsunakawa, Amit Kapila)
+     </para>
+
+     <para>
+      In corner cases, a spurious <quote>out-of-sequence TLI</> error
+      could be reported during recovery.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      If the stats collector dies during hot standby, restart it (Takayuki
+      Tsunakawa)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Check for interrupts while hot standby is waiting for a conflicting
+      query (Simon Riggs)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Avoid constantly respawning the autovacuum launcher in a corner case
+      (Amit Khandekar)
+     </para>
+
+     <para>
+      This fix avoids problems when autovacuum is nominally off and there
+      are some tables that require freezing, but all such tables are
+      already being processed by autovacuum workers.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix check for when an extension member object can be dropped (Tom Lane)
+     </para>
+
+     <para>
+      Extension upgrade scripts should be able to drop member objects,
+      but this was disallowed for serial-column sequences, and possibly
+      other cases.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Make sure <command>ALTER TABLE</> preserves index tablespace
+      assignments when rebuilding indexes (Tom Lane, Michael Paquier)
+     </para>
+
+     <para>
+      Previously, non-default settings
+      of <xref linkend="guc-default-tablespace"> could result in broken
+      indexes.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Prevent dropping a foreign-key constraint if there are pending
+      trigger events for the referenced relation (Tom Lane)
+     </para>
+
+     <para>
+      This avoids <quote>could not find trigger <replaceable>NNN</></quote>
+      or <quote>relation <replaceable>NNN</> has no triggers</quote> errors.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix processing of OID column when a table with OIDs is associated to
+      a parent with OIDs via <command>ALTER TABLE ... INHERIT</> (Amit
+      Langote)
+     </para>
+
+     <para>
+      The OID column should be treated the same as regular user columns in
+      this case, but it wasn't, leading to odd behavior in later
+      inheritance changes.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Check for serializability conflicts before reporting
+      constraint-violation failures (Thomas Munro)
+     </para>
+
+     <para>
+      When using serializable transaction isolation, it is desirable
+      that any error due to concurrent transactions should manifest
+      as a serialization failure, thereby cueing the application that
+      a retry might succeed.  Unfortunately, this does not reliably
+      happen for duplicate-key failures caused by concurrent insertions.
+      This change ensures that such an error will be reported as a
+      serialization error if the application explicitly checked for
+      the presence of a conflicting key (and did not find it) earlier
+      in the transaction.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Ensure that column typmods are determined accurately for
+      multi-row <literal>VALUES</> constructs (Tom Lane)
+     </para>
+
+     <para>
+      This fixes problems occurring when the first value in a column has a
+      determinable typmod (e.g., length for a <type>varchar</> value) but
+      later values don't share the same limit.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Throw error for an unfinished Unicode surrogate pair at the end of a
+      Unicode string (Tom Lane)
+     </para>
+
+     <para>
+      Normally, a Unicode surrogate leading character must be followed by a
+      Unicode surrogate trailing character, but the check for this was
+      missed if the leading character was the last character in a Unicode
+      string literal (<literal>U&amp;'...'</>) or Unicode identifier
+      (<literal>U&amp;"..."</>).
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Ensure that a purely negative text search query, such
+      as <literal>!foo</>, matches empty <type>tsvector</>s (Tom Dunstan)
+     </para>
+
+     <para>
+      Such matches were found by GIN index searches, but not by sequential
+      scans or GiST index searches.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Prevent crash when <function>ts_rewrite()</> replaces a non-top-level
+      subtree with an empty query (Artur Zakirov)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix performance problems in <function>ts_rewrite()</> (Tom Lane)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix <function>ts_rewrite()</>'s handling of nested NOT operators
+      (Tom Lane)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix <function>array_fill()</> to handle empty arrays properly (Tom Lane)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix one-byte buffer overrun in <function>quote_literal_cstr()</>
+      (Heikki Linnakangas)
+     </para>
+
+     <para>
+      The overrun occurred only if the input consisted entirely of single
+      quotes and/or backslashes.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Prevent multiple calls of <function>pg_start_backup()</>
+      and <function>pg_stop_backup()</> from running concurrently (Michael
+      Paquier)
+     </para>
+
+     <para>
+      This avoids an assertion failure, and possibly worse things, if
+      someone tries to run these functions in parallel.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Avoid discarding <type>interval</>-to-<type>interval</> casts
+      that aren't really no-ops (Tom Lane)
+     </para>
+
+     <para>
+      In some cases, a cast that should result in zeroing out
+      low-order <type>interval</> fields was mistakenly deemed to be a
+      no-op and discarded.  An example is that casting from <type>INTERVAL
+      MONTH</> to <type>INTERVAL YEAR</> failed to clear the months field.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix <application>pg_dump</> to dump user-defined casts and transforms
+      that use built-in functions (Stephen Frost)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix possible <application>pg_basebackup</> failure on standby
+      server when including WAL files (Amit Kapila, Robert Haas)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Ensure that the Python exception objects we create for PL/Python are
+      properly reference-counted (Rafa de la Torre, Tom Lane)
+     </para>
+
+     <para>
+      This avoids failures if the objects are used after a Python garbage
+      collection cycle has occurred.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix PL/Tcl to support triggers on tables that have <literal>.tupno</>
+      as a column name (Tom Lane)
+     </para>
+
+     <para>
+      This matches the (previously undocumented) behavior of
+      PL/Tcl's <command>spi_exec</> and <command>spi_execp</> commands,
+      namely that a magic <literal>.tupno</> column is inserted only if
+      there isn't a real column named that.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Allow DOS-style line endings in <filename>~/.pgpass</> files,
+      even on Unix (Vik Fearing)
+     </para>
+
+     <para>
+      This change simplifies use of the same password file across Unix and
+      Windows machines.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix one-byte buffer overrun if <application>ecpg</> is given a file
+      name that ends with a dot (Takayuki Tsunakawa)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix <application>psql</>'s tab completion for <command>ALTER DEFAULT
+      PRIVILEGES</> (Gilles Darold, Stephen Frost)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      In <application>psql</>, treat an empty or all-blank setting of
+      the <envar>PAGER</> environment variable as meaning <quote>no
+      pager</> (Tom Lane)
+     </para>
+
+     <para>
+      Previously, such a setting caused output intended for the pager to
+      vanish entirely.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Improve <filename>contrib/dblink</>'s reporting of
+      low-level <application>libpq</> errors, such as out-of-memory
+      (Joe Conway)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      On Windows, ensure that environment variable changes are propagated
+      to DLLs built with debug options (Christian Ullrich)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Sync our copy of the timezone library with IANA release tzcode2016j
+      (Tom Lane)
+     </para>
+
+     <para>
+      This fixes various issues, most notably that timezone data
+      installation failed if the target directory didn't support hard
+      links.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Update time zone data files to <application>tzdata</> release 2016j
+      for DST law changes in northern Cyprus (adding a new zone
+      Asia/Famagusta), Russia (adding a new zone Europe/Saratov), Tonga,
+      and Antarctica/Casey.
+      Historical corrections for Italy, Kazakhstan, Malta, and Palestine.
+      Switch to preferring numeric zone abbreviations for Tonga.
+     </para>
+    </listitem>
+
+   </itemizedlist>
+
+  </sect2>
+ </sect1>
+
  <sect1 id="release-9-2-19">
   <title>Release 9.2.19</title>
 
diff --git a/doc/src/sgml/release-9.3.sgml b/doc/src/sgml/release-9.3.sgml
index 81205a40c77..31adad9d477 100644
--- a/doc/src/sgml/release-9.3.sgml
+++ b/doc/src/sgml/release-9.3.sgml
@@ -1,6 +1,454 @@
 <!-- doc/src/sgml/release-9.3.sgml -->
 <!-- See header comment in release.sgml about typical markup -->
 
+ <sect1 id="release-9-3-16">
+  <title>Release 9.3.16</title>
+
+  <note>
+  <title>Release Date</title>
+  <simpara>2017-02-09</simpara>
+  </note>
+
+  <para>
+   This release contains a variety of fixes from 9.3.15.
+   For information about new features in the 9.3 major release, see
+   <xref linkend="release-9-3">.
+  </para>
+
+  <sect2>
+   <title>Migration to Version 9.3.16</title>
+
+   <para>
+    A dump/restore is not required for those running 9.3.X.
+   </para>
+
+   <para>
+    However, if your installation has been affected by the bug described in
+    the first changelog entry below, then after updating you may need
+    to take action to repair corrupted indexes.
+   </para>
+
+   <para>
+    Also, if you are upgrading from a version earlier than 9.3.15,
+    see <xref linkend="release-9-3-15">.
+   </para>
+
+  </sect2>
+
+  <sect2>
+   <title>Changes</title>
+
+   <itemizedlist>
+
+    <listitem>
+     <para>
+      Fix a race condition that could cause indexes built
+      with <command>CREATE INDEX CONCURRENTLY</> to be corrupt
+      (Pavan Deolasee, Tom Lane)
+     </para>
+
+     <para>
+      If <command>CREATE INDEX CONCURRENTLY</> was used to build an index
+      that depends on a column not previously indexed, then rows inserted
+      or updated by transactions that ran concurrently with
+      the <command>CREATE INDEX</> command could have received incorrect
+      index entries.  If you suspect this may have happened, the most
+      reliable solution is to rebuild affected indexes after installing
+      this update.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Unconditionally WAL-log creation of the <quote>init fork</> for an
+      unlogged table (Michael Paquier)
+     </para>
+
+     <para>
+      Previously, this was skipped when <xref linkend="guc-wal-level">
+      = <literal>minimal</>, but actually it's necessary even in that case
+      to ensure that the unlogged table is properly reset to empty after a
+      crash.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      If the stats collector dies during hot standby, restart it (Takayuki
+      Tsunakawa)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Ensure that hot standby feedback works correctly when it's enabled at
+      standby server start (Ants Aasma, Craig Ringer)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Check for interrupts while hot standby is waiting for a conflicting
+      query (Simon Riggs)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Avoid constantly respawning the autovacuum launcher in a corner case
+      (Amit Khandekar)
+     </para>
+
+     <para>
+      This fix avoids problems when autovacuum is nominally off and there
+      are some tables that require freezing, but all such tables are
+      already being processed by autovacuum workers.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix check for when an extension member object can be dropped (Tom Lane)
+     </para>
+
+     <para>
+      Extension upgrade scripts should be able to drop member objects,
+      but this was disallowed for serial-column sequences, and possibly
+      other cases.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Make sure <command>ALTER TABLE</> preserves index tablespace
+      assignments when rebuilding indexes (Tom Lane, Michael Paquier)
+     </para>
+
+     <para>
+      Previously, non-default settings
+      of <xref linkend="guc-default-tablespace"> could result in broken
+      indexes.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Prevent dropping a foreign-key constraint if there are pending
+      trigger events for the referenced relation (Tom Lane)
+     </para>
+
+     <para>
+      This avoids <quote>could not find trigger <replaceable>NNN</></quote>
+      or <quote>relation <replaceable>NNN</> has no triggers</quote> errors.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix processing of OID column when a table with OIDs is associated to
+      a parent with OIDs via <command>ALTER TABLE ... INHERIT</> (Amit
+      Langote)
+     </para>
+
+     <para>
+      The OID column should be treated the same as regular user columns in
+      this case, but it wasn't, leading to odd behavior in later
+      inheritance changes.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Report correct object identity during <command>ALTER TEXT SEARCH
+      CONFIGURATION</> (Artur Zakirov)
+     </para>
+
+     <para>
+      The wrong catalog OID was reported to extensions such as logical
+      decoding.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Check for serializability conflicts before reporting
+      constraint-violation failures (Thomas Munro)
+     </para>
+
+     <para>
+      When using serializable transaction isolation, it is desirable
+      that any error due to concurrent transactions should manifest
+      as a serialization failure, thereby cueing the application that
+      a retry might succeed.  Unfortunately, this does not reliably
+      happen for duplicate-key failures caused by concurrent insertions.
+      This change ensures that such an error will be reported as a
+      serialization error if the application explicitly checked for
+      the presence of a conflicting key (and did not find it) earlier
+      in the transaction.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Prevent multicolumn expansion of <replaceable>foo</><literal>.*</> in
+      an <command>UPDATE</> source expression (Tom Lane)
+     </para>
+
+     <para>
+      This led to <quote>UPDATE target count mismatch --- internal
+      error</>.  Now the syntax is understood as a whole-row variable,
+      as it would be in other contexts.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Ensure that column typmods are determined accurately for
+      multi-row <literal>VALUES</> constructs (Tom Lane)
+     </para>
+
+     <para>
+      This fixes problems occurring when the first value in a column has a
+      determinable typmod (e.g., length for a <type>varchar</> value) but
+      later values don't share the same limit.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Throw error for an unfinished Unicode surrogate pair at the end of a
+      Unicode string (Tom Lane)
+     </para>
+
+     <para>
+      Normally, a Unicode surrogate leading character must be followed by a
+      Unicode surrogate trailing character, but the check for this was
+      missed if the leading character was the last character in a Unicode
+      string literal (<literal>U&amp;'...'</>) or Unicode identifier
+      (<literal>U&amp;"..."</>).
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Ensure that a purely negative text search query, such
+      as <literal>!foo</>, matches empty <type>tsvector</>s (Tom Dunstan)
+     </para>
+
+     <para>
+      Such matches were found by GIN index searches, but not by sequential
+      scans or GiST index searches.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Prevent crash when <function>ts_rewrite()</> replaces a non-top-level
+      subtree with an empty query (Artur Zakirov)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix performance problems in <function>ts_rewrite()</> (Tom Lane)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix <function>ts_rewrite()</>'s handling of nested NOT operators
+      (Tom Lane)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix <function>array_fill()</> to handle empty arrays properly (Tom Lane)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix one-byte buffer overrun in <function>quote_literal_cstr()</>
+      (Heikki Linnakangas)
+     </para>
+
+     <para>
+      The overrun occurred only if the input consisted entirely of single
+      quotes and/or backslashes.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Prevent multiple calls of <function>pg_start_backup()</>
+      and <function>pg_stop_backup()</> from running concurrently (Michael
+      Paquier)
+     </para>
+
+     <para>
+      This avoids an assertion failure, and possibly worse things, if
+      someone tries to run these functions in parallel.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Avoid discarding <type>interval</>-to-<type>interval</> casts
+      that aren't really no-ops (Tom Lane)
+     </para>
+
+     <para>
+      In some cases, a cast that should result in zeroing out
+      low-order <type>interval</> fields was mistakenly deemed to be a
+      no-op and discarded.  An example is that casting from <type>INTERVAL
+      MONTH</> to <type>INTERVAL YEAR</> failed to clear the months field.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Ensure that cached plans are invalidated by changes in foreign-table
+      options (Amit Langote, Etsuro Fujita, Ashutosh Bapat)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix <application>pg_dump</> to dump user-defined casts and transforms
+      that use built-in functions (Stephen Frost)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix possible <application>pg_basebackup</> failure on standby
+      server when including WAL files (Amit Kapila, Robert Haas)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Ensure that the Python exception objects we create for PL/Python are
+      properly reference-counted (Rafa de la Torre, Tom Lane)
+     </para>
+
+     <para>
+      This avoids failures if the objects are used after a Python garbage
+      collection cycle has occurred.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix PL/Tcl to support triggers on tables that have <literal>.tupno</>
+      as a column name (Tom Lane)
+     </para>
+
+     <para>
+      This matches the (previously undocumented) behavior of
+      PL/Tcl's <command>spi_exec</> and <command>spi_execp</> commands,
+      namely that a magic <literal>.tupno</> column is inserted only if
+      there isn't a real column named that.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Allow DOS-style line endings in <filename>~/.pgpass</> files,
+      even on Unix (Vik Fearing)
+     </para>
+
+     <para>
+      This change simplifies use of the same password file across Unix and
+      Windows machines.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix one-byte buffer overrun if <application>ecpg</> is given a file
+      name that ends with a dot (Takayuki Tsunakawa)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix <application>psql</>'s tab completion for <command>ALTER DEFAULT
+      PRIVILEGES</> (Gilles Darold, Stephen Frost)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      In <application>psql</>, treat an empty or all-blank setting of
+      the <envar>PAGER</> environment variable as meaning <quote>no
+      pager</> (Tom Lane)
+     </para>
+
+     <para>
+      Previously, such a setting caused output intended for the pager to
+      vanish entirely.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Improve <filename>contrib/dblink</>'s reporting of
+      low-level <application>libpq</> errors, such as out-of-memory
+      (Joe Conway)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Teach <filename>contrib/dblink</> to ignore irrelevant server options
+      when it uses a <filename>contrib/postgres_fdw</> foreign server as
+      the source of connection options (Corey Huinker)
+     </para>
+
+     <para>
+      Previously, if the foreign server object had options that were not
+      also <application>libpq</> connection options, an error occurred.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      On Windows, ensure that environment variable changes are propagated
+      to DLLs built with debug options (Christian Ullrich)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Sync our copy of the timezone library with IANA release tzcode2016j
+      (Tom Lane)
+     </para>
+
+     <para>
+      This fixes various issues, most notably that timezone data
+      installation failed if the target directory didn't support hard
+      links.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Update time zone data files to <application>tzdata</> release 2016j
+      for DST law changes in northern Cyprus (adding a new zone
+      Asia/Famagusta), Russia (adding a new zone Europe/Saratov), Tonga,
+      and Antarctica/Casey.
+      Historical corrections for Italy, Kazakhstan, Malta, and Palestine.
+      Switch to preferring numeric zone abbreviations for Tonga.
+     </para>
+    </listitem>
+
+   </itemizedlist>
+
+  </sect2>
+ </sect1>
+
  <sect1 id="release-9-3-15">
   <title>Release 9.3.15</title>
 
diff --git a/doc/src/sgml/release-9.4.sgml b/doc/src/sgml/release-9.4.sgml
index 94b028a0651..b4e64214ad7 100644
--- a/doc/src/sgml/release-9.4.sgml
+++ b/doc/src/sgml/release-9.4.sgml
@@ -1,6 +1,539 @@
 <!-- doc/src/sgml/release-9.4.sgml -->
 <!-- See header comment in release.sgml about typical markup -->
 
+ <sect1 id="release-9-4-11">
+  <title>Release 9.4.11</title>
+
+  <note>
+  <title>Release Date</title>
+  <simpara>2017-02-09</simpara>
+  </note>
+
+  <para>
+   This release contains a variety of fixes from 9.4.10.
+   For information about new features in the 9.4 major release, see
+   <xref linkend="release-9-4">.
+  </para>
+
+  <sect2>
+   <title>Migration to Version 9.4.11</title>
+
+   <para>
+    A dump/restore is not required for those running 9.4.X.
+   </para>
+
+   <para>
+    However, if your installation has been affected by the bug described in
+    the first changelog entry below, then after updating you may need
+    to take action to repair corrupted indexes.
+   </para>
+
+   <para>
+    Also, if you are upgrading from a version earlier than 9.4.10,
+    see <xref linkend="release-9-4-10">.
+   </para>
+  </sect2>
+
+  <sect2>
+   <title>Changes</title>
+
+   <itemizedlist>
+
+    <listitem>
+     <para>
+      Fix a race condition that could cause indexes built
+      with <command>CREATE INDEX CONCURRENTLY</> to be corrupt
+      (Pavan Deolasee, Tom Lane)
+     </para>
+
+     <para>
+      If <command>CREATE INDEX CONCURRENTLY</> was used to build an index
+      that depends on a column not previously indexed, then rows inserted
+      or updated by transactions that ran concurrently with
+      the <command>CREATE INDEX</> command could have received incorrect
+      index entries.  If you suspect this may have happened, the most
+      reliable solution is to rebuild affected indexes after installing
+      this update.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Ensure that the special snapshot used for catalog scans is not
+      invalidated by premature data pruning (Tom Lane)
+     </para>
+
+     <para>
+      Backends failed to account for this snapshot when advertising their
+      oldest xmin, potentially allowing concurrent vacuuming operations to
+      remove data that was still needed.  This led to transient failures
+      along the lines of <quote>cache lookup failed for relation 1255</>.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Unconditionally WAL-log creation of the <quote>init fork</> for an
+      unlogged table (Michael Paquier)
+     </para>
+
+     <para>
+      Previously, this was skipped when <xref linkend="guc-wal-level">
+      = <literal>minimal</>, but actually it's necessary even in that case
+      to ensure that the unlogged table is properly reset to empty after a
+      crash.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Reduce interlocking on standby servers during the replay of btree
+      index vacuuming operations (Simon Riggs)
+     </para>
+
+     <para>
+      This change avoids substantial replication delays that sometimes
+      occurred while replaying such operations.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      If the stats collector dies during hot standby, restart it (Takayuki
+      Tsunakawa)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Ensure that hot standby feedback works correctly when it's enabled at
+      standby server start (Ants Aasma, Craig Ringer)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Check for interrupts while hot standby is waiting for a conflicting
+      query (Simon Riggs)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Avoid constantly respawning the autovacuum launcher in a corner case
+      (Amit Khandekar)
+     </para>
+
+     <para>
+      This fix avoids problems when autovacuum is nominally off and there
+      are some tables that require freezing, but all such tables are
+      already being processed by autovacuum workers.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix check for when an extension member object can be dropped (Tom Lane)
+     </para>
+
+     <para>
+      Extension upgrade scripts should be able to drop member objects,
+      but this was disallowed for serial-column sequences, and possibly
+      other cases.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Make sure <command>ALTER TABLE</> preserves index tablespace
+      assignments when rebuilding indexes (Tom Lane, Michael Paquier)
+     </para>
+
+     <para>
+      Previously, non-default settings
+      of <xref linkend="guc-default-tablespace"> could result in broken
+      indexes.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix incorrect updating of trigger function properties when changing a
+      foreign-key constraint's deferrability properties with <command>ALTER
+      TABLE ... ALTER CONSTRAINT</> (Tom Lane)
+     </para>
+
+     <para>
+      This led to odd failures during subsequent exercise of the foreign
+      key, as the triggers were fired at the wrong times.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Prevent dropping a foreign-key constraint if there are pending
+      trigger events for the referenced relation (Tom Lane)
+     </para>
+
+     <para>
+      This avoids <quote>could not find trigger <replaceable>NNN</></quote>
+      or <quote>relation <replaceable>NNN</> has no triggers</quote> errors.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix processing of OID column when a table with OIDs is associated to
+      a parent with OIDs via <command>ALTER TABLE ... INHERIT</> (Amit
+      Langote)
+     </para>
+
+     <para>
+      The OID column should be treated the same as regular user columns in
+      this case, but it wasn't, leading to odd behavior in later
+      inheritance changes.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix <command>CREATE OR REPLACE VIEW</> to update the view query
+      before attempting to apply the new view options (Dean Rasheed)
+     </para>
+
+     <para>
+      Previously the command would fail if the new options were
+      inconsistent with the old view definition.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Report correct object identity during <command>ALTER TEXT SEARCH
+      CONFIGURATION</> (Artur Zakirov)
+     </para>
+
+     <para>
+      The wrong catalog OID was reported to extensions such as logical
+      decoding.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Check for serializability conflicts before reporting
+      constraint-violation failures (Thomas Munro)
+     </para>
+
+     <para>
+      When using serializable transaction isolation, it is desirable
+      that any error due to concurrent transactions should manifest
+      as a serialization failure, thereby cueing the application that
+      a retry might succeed.  Unfortunately, this does not reliably
+      happen for duplicate-key failures caused by concurrent insertions.
+      This change ensures that such an error will be reported as a
+      serialization error if the application explicitly checked for
+      the presence of a conflicting key (and did not find it) earlier
+      in the transaction.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Prevent multicolumn expansion of <replaceable>foo</><literal>.*</> in
+      an <command>UPDATE</> source expression (Tom Lane)
+     </para>
+
+     <para>
+      This led to <quote>UPDATE target count mismatch --- internal
+      error</>.  Now the syntax is understood as a whole-row variable,
+      as it would be in other contexts.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Ensure that column typmods are determined accurately for
+      multi-row <literal>VALUES</> constructs (Tom Lane)
+     </para>
+
+     <para>
+      This fixes problems occurring when the first value in a column has a
+      determinable typmod (e.g., length for a <type>varchar</> value) but
+      later values don't share the same limit.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Throw error for an unfinished Unicode surrogate pair at the end of a
+      Unicode string (Tom Lane)
+     </para>
+
+     <para>
+      Normally, a Unicode surrogate leading character must be followed by a
+      Unicode surrogate trailing character, but the check for this was
+      missed if the leading character was the last character in a Unicode
+      string literal (<literal>U&amp;'...'</>) or Unicode identifier
+      (<literal>U&amp;"..."</>).
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Ensure that a purely negative text search query, such
+      as <literal>!foo</>, matches empty <type>tsvector</>s (Tom Dunstan)
+     </para>
+
+     <para>
+      Such matches were found by GIN index searches, but not by sequential
+      scans or GiST index searches.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Prevent crash when <function>ts_rewrite()</> replaces a non-top-level
+      subtree with an empty query (Artur Zakirov)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix performance problems in <function>ts_rewrite()</> (Tom Lane)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix <function>ts_rewrite()</>'s handling of nested NOT operators
+      (Tom Lane)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix <function>array_fill()</> to handle empty arrays properly (Tom Lane)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix one-byte buffer overrun in <function>quote_literal_cstr()</>
+      (Heikki Linnakangas)
+     </para>
+
+     <para>
+      The overrun occurred only if the input consisted entirely of single
+      quotes and/or backslashes.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Prevent multiple calls of <function>pg_start_backup()</>
+      and <function>pg_stop_backup()</> from running concurrently (Michael
+      Paquier)
+     </para>
+
+     <para>
+      This avoids an assertion failure, and possibly worse things, if
+      someone tries to run these functions in parallel.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Avoid discarding <type>interval</>-to-<type>interval</> casts
+      that aren't really no-ops (Tom Lane)
+     </para>
+
+     <para>
+      In some cases, a cast that should result in zeroing out
+      low-order <type>interval</> fields was mistakenly deemed to be a
+      no-op and discarded.  An example is that casting from <type>INTERVAL
+      MONTH</> to <type>INTERVAL YEAR</> failed to clear the months field.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Ensure that cached plans are invalidated by changes in foreign-table
+      options (Amit Langote, Etsuro Fujita, Ashutosh Bapat)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix <application>pg_dump</> to dump user-defined casts and transforms
+      that use built-in functions (Stephen Frost)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix <application>pg_restore</> with <option>--create --if-exists</>
+      to behave more sanely if an archive contains
+      unrecognized <command>DROP</> commands (Tom Lane)
+     </para>
+
+     <para>
+      This doesn't fix any live bug, but it may improve the behavior in
+      future if <application>pg_restore</> is used with an archive
+      generated by a later <application>pg_dump</> version.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix <application>pg_basebackup</>'s rate limiting in the presence of
+      slow I/O (Antonin Houska)
+     </para>
+
+     <para>
+      If disk I/O was transiently much slower than the specified rate
+      limit, the calculation overflowed, effectively disabling the rate
+      limit for the rest of the run.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix <application>pg_basebackup</>'s handling of
+      symlinked <filename>pg_stat_tmp</> and <filename>pg_replslot</>
+      subdirectories (Magnus Hagander, Michael Paquier)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix possible <application>pg_basebackup</> failure on standby
+      server when including WAL files (Amit Kapila, Robert Haas)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Ensure that the Python exception objects we create for PL/Python are
+      properly reference-counted (Rafa de la Torre, Tom Lane)
+     </para>
+
+     <para>
+      This avoids failures if the objects are used after a Python garbage
+      collection cycle has occurred.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix PL/Tcl to support triggers on tables that have <literal>.tupno</>
+      as a column name (Tom Lane)
+     </para>
+
+     <para>
+      This matches the (previously undocumented) behavior of
+      PL/Tcl's <command>spi_exec</> and <command>spi_execp</> commands,
+      namely that a magic <literal>.tupno</> column is inserted only if
+      there isn't a real column named that.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Allow DOS-style line endings in <filename>~/.pgpass</> files,
+      even on Unix (Vik Fearing)
+     </para>
+
+     <para>
+      This change simplifies use of the same password file across Unix and
+      Windows machines.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix one-byte buffer overrun if <application>ecpg</> is given a file
+      name that ends with a dot (Takayuki Tsunakawa)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Fix <application>psql</>'s tab completion for <command>ALTER DEFAULT
+      PRIVILEGES</> (Gilles Darold, Stephen Frost)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      In <application>psql</>, treat an empty or all-blank setting of
+      the <envar>PAGER</> environment variable as meaning <quote>no
+      pager</> (Tom Lane)
+     </para>
+
+     <para>
+      Previously, such a setting caused output intended for the pager to
+      vanish entirely.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Improve <filename>contrib/dblink</>'s reporting of
+      low-level <application>libpq</> errors, such as out-of-memory
+      (Joe Conway)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Teach <filename>contrib/dblink</> to ignore irrelevant server options
+      when it uses a <filename>contrib/postgres_fdw</> foreign server as
+      the source of connection options (Corey Huinker)
+     </para>
+
+     <para>
+      Previously, if the foreign server object had options that were not
+      also <application>libpq</> connection options, an error occurred.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      On Windows, ensure that environment variable changes are propagated
+      to DLLs built with debug options (Christian Ullrich)
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Sync our copy of the timezone library with IANA release tzcode2016j
+      (Tom Lane)
+     </para>
+
+     <para>
+      This fixes various issues, most notably that timezone data
+      installation failed if the target directory didn't support hard
+      links.
+     </para>
+    </listitem>
+
+    <listitem>
+     <para>
+      Update time zone data files to <application>tzdata</> release 2016j
+      for DST law changes in northern Cyprus (adding a new zone
+      Asia/Famagusta), Russia (adding a new zone Europe/Saratov), Tonga,
+      and Antarctica/Casey.
+      Historical corrections for Italy, Kazakhstan, Malta, and Palestine.
+      Switch to preferring numeric zone abbreviations for Tonga.
+     </para>
+    </listitem>
+
+   </itemizedlist>
+
+  </sect2>
+ </sect1>
+
  <sect1 id="release-9-4-10">
   <title>Release 9.4.10</title>