-510 THE TABLE DESIGNATED BY THE CURSOR OF THE UPDATE OR DELETE STATEMENT CANNOT BE MODIFIED

Explanation
  The application program attempted to execute
an UPDATE or DELETE WHERE CURRENT OF cursor statement against a table
or view that cannot be updated or deleted. This error can be returned
for the following reasons: A delete was performed from a read-only view or for an update
in which the cursor was not defined with the FOR UPDATE clause.
A target table exists at a remote location and DB2® has employed block fetching because you explicitly
declared the cursor FOR FETCH ONLY, or because the application is
bound CURRENTDATA( NO) and the cursor is ambiguous.
DB2 has employed parallelism
to execute the SELECT statement associated with the cursor named in
a DELETE WHERE CURRENT OF cursor statement, or a DELETE WHERE CURRENT
OF is issued against a row which DB2 cannot
guarantee to have not been modified by another application since the
time the cursor was positioned upon it (in accordance with ISO(CS))
semantics for an ambiguous cursor in an application bound CURRENTDATA(NO)).
The cursor references a view on which an INSTEAD OF UPDATE trigger
is defined, even if the view is an updatable view.

System action
  The statement cannot be processed. 
No data was updated or deleted in the object table or view.

Programmer response
  The requested UPDATE or DELETE cannot
be performed.
  For a remote table, modify the DECLARE CURSOR
and then rebind the PLAN. 
  For a cursor that uses parallelism,
disable parallelism for the query by using the DEGREE(1) BIND option
for static SQL or by setting the CURRENT DEGREE special register to
'1' for dynamic SQL.
  For an ambiguous cursor in an application
bound CURRENTDATA(NO), either make the cursor unambiguous (declare
it FOR UPDATE OF), or rebind the application CURRENTDATA(YES).
  For
a view with INSTEAD OF triggers, drop those triggers.

SQLSTATE
  42828 