With the release of WIMS Client 8.4.2 a database upgrade is required.  The upgrade is automatically applied when logging into a Facility Database for the first time with the WIMS 8.2.6 client. 

Tech Notes:

SQL Server Scripts:

Facility Databases

ALTER TABLE MDE ADD UD1FIELD [Numeric](18, 0) NULL DEFAULT (NULL)
ALTER TABLE MDE ADD UD2 [Numeric](18, 0) NULL DEFAULT (NULL)
ALTER TABLE MDE ADD UD2FIELD [Numeric](18, 0) NULL DEFAULT (NULL)
ALTER TABLE MDE ADD TYPESOURCE [Numeric](18, 0) NULL DEFAULT (NULL)

ALTER TABLE VARDESC ALTER COLUMN DESCRIPTION NVARCHAR(1000)

Oracle:

Facility Databases

ALTER TABLE MDE ADD UD1FIELD NUMBER NULL
ALTER TABLE MDE ADD UD2 NUMBER NULL
ALTER TABLE MDE ADD UD2FIELD NUMBER NULL
ALTER TABLE MDE ADD TYPESOURCE NUMBER NULL

ALTER TABLE VARDESC MODIFY(DESCRIPTION NVARCHAR2(1000))