Use the cjezclearsession command for deleting global session information. Execute the command after a J2EE server or a Web application stops, when more time than the validity of the HTTP session has elapsed, and before restarting the J2EE server or the Web application.

In a Web application, if you have set validity for each HTTP session by using servlet API, execute the command in accordance with the longest validity.

The procedures for deleting global session information are as follows:

1. Set the JAR files of the EADs client on the environment variable CLASSPATH.
   When using the cjclearsession command for the first time, specify the path of the JAR files (eads-client.jar, eads-common.jar, and hntrlib2-eads-j.jar) of the EADs client to be used in the environment variable CLASSPATH.
   
2. Execute the cjezclearsession command for deleting the global session information
   Specify the J2EE server name, application identifier, and server ID in the cjezclearsession command, and execute the command. When you execute the command, all global session information, which is the global session information related to the Web applications specified in the command argument and global session information possessed by the J2EE servers specified in the command argument, from among the global session information stored in session information a cache on the EADs server, is deleted.
   
3. Restart the J2EE server or the Web application if required.

If you specify the -count option in the cjezclearsession command and execute the command, you can view the count of global session information, which is the global session information related to the Web applications specified in the command argument and the global session information possessed by the J2EE servers specified in the command argument, from among the global session information stored in the session information cache on the EADs server.

If an error occurs when accessing the EADs server while executing the command, cancel the command execution at the point at which the error occurs.

For details on the cjezclearsession command, see cjezclearsession (deleting global session information (the EADs session failover functionality)) in the uCosminexus Application Server Command Reference Guide.

The notes for deleting global session information are:

• Deleting information when the J2EE server, which owns the HTTP session to be deleted, is running
  If the J2EE server is running, request processing might be performed and global session information might be newly created. As a result, if the J2EE server that owns the HTTP session to be deleted is running, the session might be deleted before the validity of the global session expires. When deleting global session information, stop the J2EE server that owns the HTTP session to be deleted and then execute the command.
  
• Deleting before validity expires
  If you delete global session information by executing the cjezclearsession command before validity of the global session expires, the resultant operations are:
  

  No.	Existence status of HTTP session on the J2EE server	Operation
  1	Does not exist	You cannot inherit the global session.
  2	Exists	Global session information is not stored in the session information cache on the EADs server and the Web application operates only with the HTTP session on the J2EE server.