Administration guide > Troubleshoot > Messages > CWOBJ: Messages for the ObjectGrid and related components
CWOBJ0033I
CLASS_NOT_IMPLEMENT_CLONE_CWOBJ0033=CWOBJ0033I: Class, {0}, does not implement the clone method. Using serialization instead for this Class in map {1}.
Explanation
If using the default ObjectTransformer and the object type does not implement the clone() method, the ObjectGrid is serialized and deserialized to create a copy of the object.
User response
If you are using a copy mode such as COPY_ON_READ or COPY_ON_READ_AND_COMMIT and the performance is slow, add a clone method to the object type or provide a custom ObjectTransformer implementation for the object type. See the ObjectTransformer interface best practices section in the information center for more information about the ObjectTransformer interface.
Parent topic:
CWOBJ: WebSphere eXtreme Scale messages for the ObjectGrid and related components