Creating and downloading a CCDT file

You can create a client channel definition table file and download it from the appliance so that a client application can use the table to connect to a queue manager running on the appliance.

Queue managers store client connection channel information in a client channel definition table (CCDT). This information includes authentication rules you have defined for channels on the queue manager. The table is updated whenever a client connection channel is defined or altered.

IBM® MQ client applications use the CCDT to determine the channel definitions and authentication information to connect to a queue manager. For a client application to use the CCDT, it must be copied to a file and downloaded from the appliance to the client machine or to a location from where the client can access it.

To copy the CCDT to a file:

Enter the IBM MQ administration mode by entering the following command:
```
mqcli
```
Create a file containing the CCDT for a queue manager by entering the following command:
```
rcrmqobj -m queue_manager_name -t clchltab
```

A file with the name queue_manager_name_AMQCLCHL.TAB is created and can be found in the mqbackup:// URI on the appliance.

You can use the IBM MQ Appliance web UI to download the file, see Managing files by using the IBM MQ Appliance web UI.