Indicates the set of OCI routines used.
property OCICallStyle: TOCICallStyle;
Use the OCICallStyle property to check what set of OCI routines is used. Write OCICallStyle before connection to specify that either OCI 7.3 or OCI 8.0 routines will be used. TOraSession initializes this property on behalf of the default OCI client found in the system at the time when OCI library is being loaded.