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Download

# Go to the [*Oracle Internet Application Server*|http://www.oracle.com/technetwork/middleware/ias/overview/index.html] site.  Click on the [*Downloads*|http://www.oracle.com/technetwork/middleware/ias/downloads/index.html] tab and all available [*Application Server 10g Release 3 (10.1.3.x) Downloads*|http://www.oracle.com/technetwork/middleware/ias/downloads/index.html] will be displayed.
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# Scroll down until you reach the *Oracle Containers for J2EE* section and click on [*Pure Java*|http://www.oracle.com/technetwork/middleware/ias/downloads/utilsoft-090603.html].  The [*Oracle Application Server 10g Software Downloads*|http://www.oracle.com/technetwork/middleware/ias/downloads/utilsoft-090603.html] will be displayed.
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# Accept the License Agreement, then click on the *Oracle Containers for J2EE 10g (OC4J)* link.  The download of the *oc4j_extended_101350.zip* file will start.  Save this zip file on your workstation.

Install

# In your $\{user.home} directory, create the directories oc4j/10.1.3.5.0 and unzip the *oc4j_extended_101350.zip* file to the $\{user.home}/oc4j/10.3.5.0 directory.  Create a system environmental variable *ORACLE_HOME* and set it's value to $\{user.home}/oc4j/10.3.5.0.
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For example: if *$\{user.home}=/users/rstone*, then *ORACLE_HOME=/user/rstone/oc4j/10.1.3.5.0*
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You can actually unzip to any directory you desire.  The only requirement is that all directory names cannot contain any white space.

Configure

1. Edit the file ${ORACLE_HOME}/j2ee/home/config/system-application.xml and change:

   Code Block
   <import-shared-library name="oracle.toplink">

   to:

   Code Block
   <!--import-shared-library name="oracle.toplink"-->

2. We need to add a datasource so that the applications can pull data from the database.  Edit ${ORACLE_HOME/j2ee/home/config/data-sources.xml to add a datasource.  Here's an example of adding a MITSIS datasource:
   

   Code Block
   <data-source class="com.evermind.sql.DriverManagerDataSource" name="OracleDS2" location="jdbc/MitsisDS" xa-location="jdbc/xa/StargateXADS-unused" ejb-location="jdbc/OracleDS-unused" connection-driver="oracle.jdbc.driver.OracleDriver" username="" password="" url="jdbc:oracle:thin:@//earth-vault-2.mit.edu:1523/sundev2" inactivity-timeout="30" />

   where obviously you'll add your username and password.
   
   
3. In order to use Spring 3.X with OC4J 10.1.3, you'll need to swap out the default XML parser in OC4J with something more modern.  xercesImpl.jar and xml-apis.jar work fine.  To swap the parser out, you need to create a new shared library in the OC4J enterprise manager and then edit the system-application.xml file to use your new shared library instead of the Oracle XML parser.
   
   Open ${ORACLE_HOME}/j2ee/home/application-deployments/default/orion-application.xml with a text editor.  If the file or any sub-directory does not exist, create them as needed.
   
   If you had to create the file anew, these are the contents of the file:

   Code Block

   <?xml version='1.0' encoding='utf-8'?> <orion-application xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://xmlns.oracle.com/oracleas/schema/orion-application-10_0.xsd" schema-major-version="10" schema-minor-version="0" component-classification="internal"> <imported-shared-libraries> <remove-inherited name="oracle.xml"/> </imported-shared-libraries> </orion-application>

   If you had an existing file, add this block to it:

   Code Block
   <imported-shared-libraries> <remove-inherited name="oracle.xml"/> </imported-shared-libraries>

By default, some run time errors that you'll see when testing web apps in OC4J are not too helpful.  You can coax OC4J into giving you more information about certain errors by making the following changes in global-web-application.xml:

Open ${ORACLE_HOME}/j2ee/home/config/global-web-application.xml with a text editor.

1. Turn on "development" mode - in the <orion-web-app> section at the top of the file, change the "development" setting to true:
   

   Code Block
   <orion-web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://xmlns.oracle.com/oracleas/schema/orion-web-10_0.xsd" jsp-cache-directory="./persistence" servlet-webdir="/servlet" development="true" jsp-timeout="0" jsp-cache-tlds="standard" schema-major-version="10" schema-minor-version="0">

2. Turn on debug mode. In the "jsp" servlet section, set a parameter debug_mode to true. The section should look like this:

   Code Block
   <servlet> <servlet-name>jsp</servlet-name> <servlet-class>oracle.jsp.runtimev2.JspServlet</servlet-class> <init-param> <param-name>debug_mode</param-name> <param-value>true</param-value> </init-param> <load-on-startup>0</load-on-startup> </servlet>

   With these settings, you should get more meaningful messages in your browser when you run into certain errors (JSP syntax errors for example).

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