-10408: Character conversion failed 

Explanation:

The LOB data that was transferred could not be converted, because the data contains invalid characters, or it does not match the data format of the column. UNICODE data (UCS2 and UTF8) can only be inserted in UNICODE database instances.

User Action:

·        Check whether the database instance supports the specified data format.

·        Check whether the special database parameter _UNICODE has the value YES.