On Windows, the driver can take advantage of Microsoft Transaction Server (MTS) capabilities, specifically, the Distributed Transaction Coordinator (DTC) using the XA Protocol. For a general discussion of MTS and DTC, refer to the help file of the Microsoft Transaction Server SDK.
1. When enlisting in a distributed transaction, the Informix clients only use the defaults specified in Setnet32.
2. Run the regcopy utility provided with INFORMIX-Connect to copy the registry entries created by Setnet32 to an area in the registry that is accessible by the DTC. The DTC is a service, and services do not search for configuration information in the Windows registry where Setnet32 stores client products environment variables. Therefore, if you do not run regcopy after setting the defaults in Setnet32, enlistment in a distributed transaction will fail.
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