In version 2.0 I used sql "PREPARE" to prepare a statement for use in a sql "EXECUTE USING DESCRIPTOR" which is executed in a loop, and it worked fine. But in version 3.0, with no code change, only the first row is successfuly written and the subsequent executions generate different erros.

To avoid the problem I put the sql "PREPARE" immediatly before the sql "EXECUTE USING DESCRIPTOR", and it worked. But the processing time became almost three times greater, so I turned back to version 2.0.

My question is: Is there some resource to achieve the 2.0 performance?