WebSphere brand IBM WebSphere Premises Server, Version 6.1.x

Troubleshooting problems with MicroBroker

Use these tips to resolve errors caused by MicroBroker.

Enabling trace

If you suspect that MicroBroker is the source of a problem, you can modify the MicroBroker trace level to receive more information.

To do this, set the trace.level property in the MicroBroker agent. Possible values for the trace.level property are min, 1, 2, 3, 4, 5, or max.

Increasing the queue size

Increase the MicroBroker queue size if you are receiving MicroBroker warnings, such as the following:

[WARNING] FMBM1009 MicroBroker Client 'BridgeMicro' - queue 'bridge:E1-prem' is full. Depth: 1000

You can increase the MicroBroker queue size by editing the queueSize parameter in the MicroBroker agent.

Increasing the maximum message size

Increase the MicroBroker queue size if you are receiving MicroBroker errors similar to the following examples.

Note: In all of these examples, the number of tags is 300.

XML with additional EPC URI data

[ERROR] FMBT1761 MicroBroker Client 'BridgeMicro' - PUBLISH MQTT protocol flow 
exceeds the maximum message size. Max size:51200 bytes, Message size:241047

XML without additional EPC URI data

[ERROR] FMBT1761 MicroBroker Client 'BridgeMicro' - PUBLISH MQTT protocol flow 
exceeds the maximum message size. Max size:51200 bytes, Message size:136139

Serialized object with additional EPC URI data

[ERROR] FMBT1761 MicroBroker Client 'BridgeMicro' - PUBLISH MQTT protocol flow 
exceeds the maximum message size. Max size:51200 bytes, Message size:154454

Serialized object without additional EPC URI data

[ERROR] FMBT1761 MicroBroker Client 'BridgeMicro' - PUBLISH MQTT protocol flow 
exceeds the maximum message size. Max size:51200 bytes, Message size:94374

You can increase the MicroBroker maximum message size by editing the maxMessageSize parameter in the MicroBroker agent.


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