DBA Tips Archive for Oracle
by Jeff Hunter, Sr. Database Administrator
You can remove a J2EE Web application from the OC4J Web server using either the
-undeployoption with the
admin.jarcommand line tool or by manually deleting the appropriate directories.
Undeploying Application Using admin.jar -undeploy
Syntax% java -jar admin.jar ormi://<oc4j_host>:<oc4j_ormi_port> admin <adminpassword> -undeploy <applicationName> -keepFilesExample% cd $OC4J_HOME/j2ee/home % java -jar admin.jar ormi://localhost admin manager -undeploy chapter5
This command removes the deployed J2EE application known as <applicationName> and results in the following:
- The application is removed from the OC4J runtime.
- All bindings for the Web modules are removed from all the Web sites to which the Web modules were bound.
- The application files are removed from both the
$OC4J_HOME/j2ee/home/application-deployments/directories. If you do not want these files to be removed, use the -keepFiles switch.
Undeploying Application by Manually Deleting Directories
If you want a clean deployment of an application deployed to OC4J, you can perform the following tasks. In this example, I will delete an application title chapter5. The EAR file was deployed to
- Stop the OC4J Instance.% cd $OC4J_HOME/j2ee/home % java -jar admin.jar ormi://localhost admin manager -shutdown
- Delete the application directories under
application-deployments:% cd $OC4J_HOME/j2ee/home/applications % rm chapter05.ear % rm -rf chapter05 % cd $OC4J_HOME/j2ee/home/application-deployments % rm -rf chapter5
- Edit the file
$OC4J_HOME/j2ee/home/config/server.xmland remove the element that describes the chapter5 application:<application name="chapter5" path="../applications/chapter05.ear" root="/chapter5" auto-start="true" />
- Edit the file
$OC4J_HOME/j2ee/home/config/http-web-site.xmland remove the element that describes the chapter5 application:<web-app application="chapter5" name="chapter05-web" root="/chapter5" load-on-startup="true" />
- Start OC4J again:% cd $OC4J_HOME/j2ee/home % java -jar oc4j.jar
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