Cannot convert between UTF8 and UCS2: failutf8conv

Problem Description: The project has been online for several months, has been running well, one day the system will not function properly, hibernate connection to the database problems; from the log see "cannot convert between UTF8 and UCS2: failutf8conv" error; , it is confirmed that the Oracle database system docking with this system has been upgraded, resulting in problems synchronizing the underlying data from their databases;

Workaround: Re-download the corresponding Oracle JDBC driver, applied to the project, and the system is functioning normally.

:http://www.oracle.com/technetwork/database/enterprise-edition/jdbc-111060-084321.html

Cannot convert between UTF8 and UCS2: failutf8conv