Selection to covp table is slow

Question

hi guys,
i am doing a selection to table covp, its a view table .. how can i tune up the selection process
SELECT * INTO CORRESPONDING FIELDS OF TABLE tcovp BYPASSING BUFFER
                       FROM covp
                       FOR ALL ENTRIES IN itab
                       WHERE objnr EQ itab-objnr
                                 AND   wrttp IN   p_wrttp
                                 AND   kstar IN p_kstar
                                 AND   budat IN p_budat.
SELECT * INTO CORRESPONDING FIELDS OF TABLE tcovp1
                   BYPASSING BUFFER
                        FROM covp  FOR ALL ENTRIES IN tafvc
                                   WHERE objnr EQ tafvc-objnr
                                   AND   wrttp IN p_wrttp
                                   AND   kstar IN p_kstar
                                   AND   budat IN p_budat.

Answer 1

hi guys,
i have used this code
IF NOT itab[] IS INITIAL.
    SELECT bukrs kstar budat wkgbtr awtyp refbn refgj refbk objnr
       into TABLE tcovp BYPASSING BUFFER
                       FROM covp
                       FOR ALL ENTRIES IN itab
                       WHERE objnr EQ itab-objnr
                                 AND   wrttp IN   p_wrttp
                                 AND   kstar IN p_kstar
                                 AND   budat IN p_budat.
endif
but still the selection data is slow and yes itab can contain up to 30k data..
how can i split the itab data ? and up to how many lines