The connector and SAP Replication Server have been built using different canonical interface (CI) versions.
T. 2010/04/29 16:32:54. (17): Version [3.1] of Connector [ora.oci], is incompatible with CI version [3.2].
This trace occurs when a connector is built and based upon a version of the Canonical Interface (CI) specification that differs from that with which SAP Replication Server is built. In the message above, the Oracle connector is compatible only with CI version 3.1 while SAP Replication Server requires CI version 3.2.
strings libsybeconn.dll | grep Express
ExpressConnect-Library/15.5/P/RCI 3.2/ NT (IX86)/Windows 2003/1/DEBUG/Thu Apr 29 08:40:08 2010