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1. Backup Your DSpace. First, and foremost, make a complete backup of your system, including:
   • A snapshot of the database. To have a "snapshot" of the PostgreSQL database, you need to shut it down during the backup. You should also have your regular PostgreSQL Backup output (using pg_dump commands).

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     The asset store (_\[dspace\]/assetstore_ by default)

   • Your configuration files and customizations to DSpace (including any customized scripts).
2. Download DSpace 1.7.1 Retrieve the new DSpace 1.7.1 source code either as a download from DSpace.org or check it out directly from the SVN code repository. If you downloaded DSpace do not unpack it on top of your existing installation. Refer to Chapter 3.3.3 Installation, Step 3 for unpacking directives.
3. Stop Tomcat. Take down your servlet container. For Tomcat, use the $CATALINA/shutdown.sh script. (Many installations will instead use a startup/shutdown script in the /etc/init.d or /etc/rc.d directories.)
4. Apply any customizations. If you have made any local customizations to your DSpace installation they will need to be migrated over to the new DSpace. These are housed in one of the following places:

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      JSPUI modifications: _\[dspace-source\]/dspace/modules/jspui/src/main/webapp/_

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      XMLUI modifications: _\[dspace-source\]/dspace/modules/xmlui/src/main/webapp/_

5. Build DSpace. Run the following commands to compile DSpace:

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   cd /[dspace-source]/dspace/ mvn -U clean package

   You will find the result in 

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   _\[dspace-source\]/dspace/target/dspace-\[version\]-build.dir{_}

    . Inside this directory is the compiled binary distribution of DSpace. Before rebuilding DSpace ('package'), the above command will clean out any previously compiled code ('clean') and ensure that your local DSpace JAR files are updated from the remote maven repository.
6. Update DSpace. Update the DSpace installed directory with the new code and libraries. Issue the following commands:

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   cd [dspace-source]/dspace/target/dspace-[version]-build.dir ant -Dconfig=[dspace]/config/dspace.cfg update

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   *Generate Browse and Search Indexes*. Though there are not any database changes between 1.7 and 1.7.1 release, it makes good policy to rebuild your search and browse indexes when upgrading to a new release. To do this, run the following command from your DSpace install directory (as the dspace user): _\[dspace\]/bin/dspace index-init_

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   *Deploy Web Applications*. Copy the web applications files from your _\[dspace\]/webapps_ directory to the subdirectory of your servlet container (e.g. tomcat): _cp \-R \[dspace\]/webapps/\* \[tomcat\]/webapps/_

9. Restart servlet container. Now restart your Tomcat/Jetty/Resin server program and test out the upgrade.

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