7.4.6 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 for Developers has been set up.

Intended users

Application developers

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
```
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 specified, perform steps 2 and 3. If the system property is not specified, 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 JAVA_DEBUGGER_PORT
```
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 
JAVA_DEBUGGER_PORT=changed_port_number
```
When this command is run, the result is displayed as follows:
```
Command create-system-properties executed successfully.
```

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