ORA-28533: Heterogeneous Services coercion handling error
Cause: The Heterogeneous Services encountered an error in coercion handling. The HS can, if the agent vendor so chooses, perform extra processing on SQL statements that contain implicit coercions or that contain coercion functions such as TO_CHAR, TO_NUMBER or TO_DATE. This functionality is controlled by coercion-related capabilities. HS logic reports this error when it encounters an error in one of these capability definitions
Action: The capability table settings are controlled by the agent vendor and can be modified by the DBA. Contact your DBA and agent vendor and get the correct set of capabilities installed
https://support.oracle.com/
http://www.oracle.com/