RWDBSystemHandle and RWDBEnvironmentHandle
The DB XA Module does not differ from the DB Interface Module in its approach to using RWDBSystemHandle and RWDBEnvironmentHandle with Oracle OCI Access Module. For information about the database-specific implementations of these classes, see the Oracle OCI Access Module User’s Guide.
NOTE: There are complications associated with making direct OCI calls. We recommend that you always consult your OCI manual, since there are many calls that are restricted in an XA environment.