Upgrade existing postgres database with latest ofbiz give table fields mismatch error.

Hi All,

I want to upgrade my old ofbiz with its latest version from trunk and also
want to use my existing database(which is postgres) with latest ofbiz. For
this i set my database name in entityengine.xml file. While running the
ofbiz it gives error for table fields datatype mismatch e.g (Column
[ATTR_VALUE] of table [public.CUST_REQUEST_ATTRIBUTE] of entity
[CustRequestAttribute] is of type [text] in the database, but is defined as
type [VARCHAR] in the entity definition.). Can any one tell me how to solve
this type mismatch error for the fields except alter datatype of each table.