Thanks for the quick reply - will try that.

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bjt:

If you are using TIBO* data access components you should be using
TIBODatabase for your connection. TIBODatabase emulates TDatabase and
doesn't offer you a split between the connection and the transaction at the
connection level. Use TIB_Connection only with the native TIB_* data
access.

You can refer to the IB_Connection property of the IBOQuery.InternalDataset
once you have made the connection through the IBODatabase.

Regards,
Helen