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------------------------------------------------------------
revno: 630
committer: Lars Helge Øverland <larshelge@xxxxxxxxx>
branch nick: dhis2-docbook-docs
timestamp: Fri 2012-11-23 10:12:10 +0100
message:
  Small update on working with pg
modified:
  src/docbkx/en/dhis2_implementation_guide_installation.xml


--
lp:~dhis2-documenters/dhis2/dhis2-docbook-docs
https://code.launchpad.net/~dhis2-documenters/dhis2/dhis2-docbook-docs

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=== modified file 'src/docbkx/en/dhis2_implementation_guide_installation.xml'
--- src/docbkx/en/dhis2_implementation_guide_installation.xml	2012-11-19 11:33:05 +0000
+++ src/docbkx/en/dhis2_implementation_guide_installation.xml	2012-11-23 09:12:10 +0000
@@ -34,7 +34,7 @@
 sudo update-alternatives --set java /usr/lib/jvm/java-7-openjdk/bin/java</screen>
     <para>Please check that the path the Java binaries are correct as they might vary from system to system, e.g. on AMD systems you might see <emphasis role="italic">../java-7-openjdk-amd64/..</emphasis> Check that your installation is okay by invoking <code>java -version</code></para>
     <para><emphasis role="bold">Install PostgreSQL</emphasis></para>
-    <para>To install PostgreSQL version 9.2 we first need to add a Ubuntu package repository our system.</para>
+    <para>To install PostgreSQL version 9.2 we first need to add a Ubuntu package repository to our system.</para>
     <para><code>sudo apt-get install python-software-properties
 sudo add-apt-repository ppa:pitti/postgresql 
 sudo apt-get update
@@ -380,6 +380,18 @@
   </section>
   <section>
 	<title>Working with the PostgreSQL database</title>
+    <para>Common operations when managing a DHIS instance are dumping and restoring databases. To
+      make a dump (copy) of your database, assuming the setup from the installation section, you can
+      invoke the following: </para>
+    <screen>pg_dump dhis2 -U dhis -f dhis2.sql</screen>
+    <para>The first argument (dhis2) refers to the name of the database. The second argument (dhis)
+      refers to the database user. The last argument (dhis2.sql) is the file name of the copy. If
+      you want to compress the file copy immediately you can do:</para>
+    <screen>pg_dump dhis2 -U dhis | gzip > dhis2.sql.gz</screen>
+    <para>To restore this copy on another system, you first need to create an empty database as
+      described in the installation section. You also need to gunzip the copy if you created a
+      compressed version. You can the invoke:</para>
+    <screen>psql -d dhis2 -U dhis -f dhis2.sql</screen>
   </section>
   <section>
     <title>Using Amazon Web services</title>