Cursor To Slow

Is there a way to speed up this query using two cursors? I need the result set from the history cursor to change on each pass of the loop. I tried to just open and close the cursor each loop but it didn't work so I delclared it and dealocated each loop, which works but at a very slow pace. Is there a command to refresh the result set? or a way to do this as a batch?


set nocount on
Declare @entry bigint, @mobile int, @fid int, @rid int, @pin char(10), @commission tinyint,
@barred tinyint, @barred_acse tinyint, @les char(10), @mobile1 int, @fid1 int,
@rid1 int, @pin1 char(10), @commission1 tinyint, @barred1 tinyint, @barred_acse1 tinyint,
@les1 char(10)

DECLARE changes CURSOR
FOR
select mobile, fid, rid, pin, commission, barred, barred_acse, les
from mobile_changes
OPEN changes
FETCH NEXT from changes
INTO @mobile, @fid, @rid, @pin, @commission, @barred, @barred_acse, @les

WHILE @@FETCH_STATUS = 0
BEGIN

DECLARE history CURSOR
FOR
select max(entry), mobile, fid, rid, pin, commission, barred, barred_acse, les
from mobile_history
where mobile = @mobile
group by mobile, fid, rid, pin, commission, barred, barred_acse, les
OPEN history
FETCH NEXT FROM history
INTO @entry, @mobile1, @fid1, @rid1, @pin1, @commission1, @barred1, @barred_acse1, @les1

IF (
@mobile = @mobile1 and @fid = @fid1 and @rid = @rid1 and @pin = @pin1 and
@commission = @commission1 and @barred = @barred1 and @barred_acse = @barred_acse1 and
@les = @les1)
BEGIN
DELETE FROM mobile_changes where mobile = @mobile
END

CLOSE history
deallocate history

FETCH NEXT FROM changes
INTO @mobile, @fid, @rid, @pin, @commission, @barred, @barred_acse, @les
END

close changes
deallocate changes