How does one install the XDK capabilities on an Oracle Database?

For Oracle 9i and above:

• Ensure the Oracle JServer Option is installed. See the JServer/JVM FAQ.
  
• Run SQL script $ORACLE_HOME/rdbms/admin/initxml.sql to load the XSK into the database.

Install steps for older versions (Oracle 8i and below):

• Ensure the Oracle JServer Option is installed. See the JServer/JVM FAQ.
  *]Run SQL script $ORACLE_HOME/rdbms/admin/catxsu.sql to load the XMLSQL Utility (DBMS_XMLQuery) into the database.
  
  
• Note that the following line is commented out in file catxsu.sql:

  -- call sys.dbms_java.loadjava ('-v -r -grant PUBLIC xdk/lib/xmlparserv2.jar');

  Run the above command manually from OS command line:

  $ loadjava -v -r -grant PUBLIC $ORACLE_HOME/xdk/lib/xmlparserv2.jar

• Load the XMLParser into Oracle by executing $ORACLE_HOME/xdk/plsql/parser/bin/load.sql
• Grant users access to XMLParser and XMLDom packages:

  grant execute on xmldom to public;
  grant execute on xmlparser to public;
  create public synonym xmldom for sys.xmldom;
  create public synonym? xmlparser? for sys.xmlparser;

• Use the DBMS_XMLSave, DBMS_XMLQuery, XMLDOM and XMLParser procedures in your programs.