SYSTEM.BASE.TOPIC
Base topic for ASPARENT resolution. If a particular topic has no parent administrative topic objects, or those parent objects also have ASPARENT, any remaining ASPARENT attributes are inherited from this object.
| Parameter | Value |
|---|---|
| TOPICSTR | " |
| CLUSTER | The default value is an empty string. |
| COMMINFO | SYSTEM.DEFAULT.COMMINFO.MULTICAST |
| DEFPRESP | SYNC |
| DEFPRTY | 0 |
| DEFPSIST | NO |
| DESCR | 'Base topic for resolving attributes' |
| DURSUB | YES |
| MCAST | DISABLED |
| MDURMDL | SYSTEM.DURABLE.MODEL.QUEUE |
| MNDURMDL | SYSTEM.NDURABLE.MODEL.QUEUE |
| NPMSGDLV | ALLAVAIL |
| PMSGDLV | ALLDUR |
| PROXYSUB | FIRSTUSE |
| PUB | ENABLED |
| PUBSCOPE | ALL |
| SUB | ENABLED |
| SUBSCOPE | ALL |
| USEDLQ | YES |
| WILDCARD | PASSTHRU |
If this object does not exist, its default values are still used by IBM® WebSphere® MQ for ASPARENT attributes that are not resolved by parent topics further up the topic tree.
Setting the PUB or SUB attributes of
SYSTEM.BASE.TOPIC to DISABLED prevents applications publishing or
subscribing to topics in the topic tree, with two exceptions:- Any topic objects in the topic tree that have PUB or SUB
explicitly set to
ENABLE. Applications can publish or subscribe to those topics, and their children. - Publication and subscription to
SYSTEM.BROKER.ADMIN.STREAMis not disabled by the setting the PUB or SUB attributes ofSYSTEM.BASE.TOPICtoDISABLED.