Nice use of MS_ForEachDB here. We don't use it much here because it's undocumented and can be a little picky with syntax. We use this type of construct to loop DBs:

DECLARE @databases TABLE(dbName VARCHAR(100))

DECLARE @CurrentDB VARCHAR(100), @SQL NVARCHAR(max)

--Exclude system DBs

INSERT @databases SELECT name from sys.databases WHERE database_id > 4

WHILE EXISTS (SELECT TOP 1 dbName FROM @databases)

BEGIN

SET@CurrentDB = (SELECT TOP 1 dbName FROM @databases)

SET @SQL = 'Use ' + @CurrentDB + '; <Take some action>'

--PRINT @sql

EXEC sp_executesql @SQL

DELETE @databases WHERE dbName = @CurrentDB

END

Ken