I thought that only v6 supports 64-bit Execution Groups....
There's not any requirement to run 64-bit Execution Groups, even with MQ v6.
XA configuration is a lot more complicated with MQ v6 - if you are doing Global Transactions in Broker now, be prepared to spend a couple of days migrating the configuration/rebuilding the configuration. _________________ I am *not* the model of the modern major general.
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