I assume that your question is related to dynamic reconfiguration.
I guess, you will have a connection definition (connection factory).
You can create a connector-connection-pool & connector-resource, provide these values via connector-connection-pool properties (your MCF implementation should have appropriate ra.xml config-property and implement corresponding getter/setter methods).
If you want it for the resource-adapter as a whole, you can use resource-adapter-config (asadmin create-resource-adapter-config). (your RA implementation should have appropriate ra.xml config-property and implement corresponding getter/setter methods)
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