Issues with Sequence Generators when Upgrading from Informatica PowerCenter 8.1 to 8.6?

Here is a simple way to upgrade all sequence generator datatypes so that version 8.1 Informatica mappings will work with version 8.6.

UPDATE OPB_WIDGET_FIELD
SET wgt_prec = 19, wgt_datatype = -5
WHERE  field_name IN ( ‘CURRVAL’,'NEXTVAL’)
AND wgt_datatype = 4;