diff --git a/reference/ibm_db2/ini.xml b/reference/ibm_db2/ini.xml
new file mode 100644
index 0000000000..4ffbd264be
--- /dev/null
+++ b/reference/ibm_db2/ini.xml
@@ -0,0 +1,106 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- $Revision: 1.1 $ -->
+<section id="extname.configuration">
+ &reftitle.runtime;
+ &extension.runtime;
+ <para>
+  <table>
+   <title>ibm_db2 &ConfigureOptions;</title>
+   <tgroup cols="3">
+    <thead>
+     <row>
+      <entry>&Name;</entry>
+      <entry>&Default;</entry>
+      <entry>&Changeable;</entry>
+     </row>
+    </thead>
+    <tbody>
+     <row>
+      <entry>ibm_db2.binmode</entry>
+      <entry>1</entry>
+      <entry>PHP_INI_ALL</entry>
+     </row>
+     <row>
+      <entry>ibm_db2.instance_name</entry>
+      <entry>&null;</entry>
+      <entry>PHP_INI_SYSTEM</entry>
+     </row>
+    </tbody>
+   </tgroup>
+  </table>
+
+ </para>
+ 
+ &ini.descriptions.title;
+ 
+ <para>
+  <variablelist>
+   <varlistentry id="ini.extname.ibm-db2.binmode">
+    <term>
+     <parameter>ibm-db2.binmode</parameter>
+     <type>integer</type>
+    </term>
+    <listitem>
+     <para>
+      This option controls the mode used for converting to and from binary
+      data in the PHP application.
+      <itemizedlist>
+       <listitem>
+        <para>
+         1 (DB2_BINARY)
+        </para>
+       </listitem>
+       <listitem>
+        <para>
+         2 (DB2_CONVERT)
+        </para>
+       </listitem>
+       <listitem>
+        <para>
+         3 (DB2_PASSTHRU)
+        </para>
+       </listitem>
+      </itemizedlist>
+     </para>
+    </listitem>
+   </varlistentry>
+   <varlistentry id="ini.extname.ibm-db2.instance-name">
+    <term>
+     <parameter>ibm-db2.instance-name</parameter>
+     <type>string</type>
+    </term>
+    <listitem>
+     <para>
+      On Linux and UNIX operating systems, this option defines the name of the
+      instance to use for cataloged database connections. If this option is set,
+      its value overrides the DB2INSTANCE environment variable setting.
+     </para>
+     <para>
+      This option is ignored on Windows operating systems.
+     </para>
+    </listitem>
+   </varlistentry>
+  </variablelist>
+ </para>
+</section>
+
+<!-- Keep this comment at the end of the file
+Local variables:
+mode: sgml
+sgml-omittag:t
+sgml-shorttag:t
+sgml-minimize-attributes:nil
+sgml-always-quote-attributes:t
+sgml-indent-step:1
+sgml-indent-data:t
+indent-tabs-mode:nil
+sgml-parent-document:nil
+sgml-default-dtd-file:"../../../manual.ced"
+sgml-exposed-tags:nil
+sgml-local-catalogs:nil
+sgml-local-ecat-files:nil
+End:
+vim600: syn=xml fen fdm=syntax fdl=2 si
+vim: et tw=78 syn=sgml
+vi: ts=1 sw=1
+-->
diff --git a/reference/ibm_db2/reference.xml b/reference/ibm_db2/reference.xml
index 66639a304d..33ff0e4a30 100644
--- a/reference/ibm_db2/reference.xml
+++ b/reference/ibm_db2/reference.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.3 $ -->
+<!-- $Revision: 1.4 $ -->
 <!-- Generated by xml_proto.php v2.2. Found in /scripts directory of phpdoc. -->
 <reference id="ref.ibm-db2">
  <title>IBM DB2, Cloudscape and Apache Derby Functions</title>
@@ -26,11 +26,25 @@
     To connect to IBM DB2 Universal Database for z/OS or iSeries, you also
     require IBM DB2 Connect or the equivalent DRDA gateway software.
    </para>
+   <section id="ibm-db2.requirements.unix">
+    <title>Requirements on Linux or Unix</title>
    <para>
-    On Linux or Unix operating systems, ensure that the user invoking the
-    PHP executable or SAPI has sourced the DB2 instance environment before
-    accessing these functions. If you created a DB2 instance in
-    <filename>/home/db2inst1/</filename>, for example, you must issue the
+    The user invoking the PHP executable or SAPI must specify the DB2 instance
+    before accessing these functions. You can set the name of the DB2 instance
+    in &php.ini; using the <literal>ibm_db2.instance_name</literal>
+    configuration option, or you can source the DB2 instance profile before
+    invoking the PHP executable.
+   </para>
+   <para>
+    If you created a DB2 instance named <literal>db2inst1</literal> in
+    <filename>/home/db2inst1/</filename>, for example, you can add the
+    following line to &php.ini;:
+    <screen>
+<![CDATA[
+ibm_db2.instance_name=db2inst1
+]]>
+    </screen>
+    If you do not set this option in &php.ini;, you must issue the
     following command to modify your environment variables to enable access to
     DB2:
     <screen>
@@ -39,16 +53,18 @@ bash$ source /home/db2inst1/sqllib/db2profile
 ]]>
     </screen>
     To enable your PHP-enabled Web server to access these functions, you must
-    add the same command to your Web server start script (typically
-    <filename>/etc/init.d/httpd</filename> or
+    either set the <literal>ibm_db2.instance_name</literal> configuration
+    option in &php.ini;, or source the DB2 instance environment in your Web
+    server start script (typically <filename>/etc/init.d/httpd</filename> or
     <filename>/etc/init.d/apache</filename>).
    </para>
+   </section>
   </section>
 
   <!-- Information found in configure.xml -->
   &reference.ibm-db2.configure;
   <!-- Information found in ini.xml -->
-  <!--&reference.ibm-db2.ini;-->
+  &reference.ibm-db2.ini;
   &reference.ibm-db2.constants;
 
   <section id="ibm-db2.resources">