Copying an administrative topic definition

You can copy a topic definition using the LIKE attribute on the DEFINE command.

Before you begin

Note: The examples in this task require you to run MQSC commands. How you do this varies by platform. See Administering IBM® MQ using MQSC commands.

Example

The following command creates a topic, MAGENTA.TOPIC, with the same attributes as the original topic, ORANGE.TOPIC, rather than those of the system default administrative topic. Enter the name of the topic to be copied exactly as it was entered when you created the topic. If the name contains lowercase characters, enclose the name in single quotation marks.

DEFINE TOPIC (MAGENTA.TOPIC) +
LIKE (ORANGE.TOPIC)

You can also use this form of the DEFINE command to copy a topic definition, but make changes to the attributes of the original. For example:

DEFINE TOPIC(BLUE.TOPIC) +
TOPICSTR(BLUE) +
LIKE(ORANGE.TOPIC)

You can also copy the attributes of the topic BLUE.TOPIC to the topic GREEN.TOPIC and specify that when publications cannot be delivered to their correct subscriber queue they are not placed onto the dead-letter queue. For example:

DEFINE TOPIC(GREEN.TOPIC) +
TOPICSTR(GREEN) +
LIKE(BLUE.TOPIC) +
USEDLQ(NO)