The OracleCI unit contains a global boolean variable OCI80Detected, which indicates if Net8 is present. It is only valid after OCI (the Oracle Call Interface) has been initialized, which occurs during the first TOracleSession connection. If you want to know this before making a connection, you can explicitly initialize OCI by calling InitOCI, which is also located in the OracleCI unit.
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Marco Kalter
Allround Automations