4.6.8 Changing the port number of the Java debugger communication port

To change the port number of the Java debugger communication port, use the delete-system-property subcommand of the asadmin utility command to delete the port number before the change, and then use the create-system-properties subcommand to specify a new port number.

Prerequisites

The domain administration server (DAS) is running.
Application Server has been set up.

Intended users

System engineers

Procedure

To acquire the setting value of the system property JAVA_DEBUGGER_PORT of the Java debugger communication port and verify the port number before the change, run the list-system-properties subcommand of the asadmin utility command.
```
asadmin list-system-properties server_instance_name_or_cluster_name
```
- In a configuration where only one Java EE server is deployed, specify the server instance name.
- In a cluster configuration where more than one Java EE server is deployed, specify the cluster name.
When this command is run, the result is displayed as follows:
```
JAVA_DEBUGGER_PORT=29010
    :
Command list-system-properties executed successfully.
```
Reference note

If the system property (JAVA_DEBUGGER_PORT) is set, perform steps 2 and 3. If this property is not set, perform step 3.
To delete the system property JAVA_DEBUGGER_PORT, run the delete-system-property subcommand of the asadmin utility command.
```
asadmin delete-system-property --target server_instance_name_or_cluster_name JAVA_DEBUGGER_PORT
```
- In a configuration where only one Java EE server is deployed, specify the server instance name for the --target option.
- In a cluster configuration where more than one Java EE server is deployed, specify the cluster name for the --target option.
When this command is run, the result is displayed as follows:
```
Command delete-system-property executed successfully.
```
To set a new port number for the system property JAVA_DEBUGGER_PORT, run the create-system-properties subcommand of the asadmin utility command.
```
asadmin create-system-properties --target server_instance_name_or_cluster_name JAVA_DEBUGGER_PORT=changed_port_number
```
- In a configuration where only one Java EE server is deployed, specify the server instance name for the --target option.
- In a cluster configuration where more than one Java EE server is deployed, specify the cluster name for the --target option.
When this command is run, the result is displayed as follows:
```
Command create-system-properties executed successfully.
```

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