Optimizing program (SELECT query).

The below piece of code is taking a long time for execution. Can somebody please suggest a better way to write it.

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lv_sydatum2 = sy-datum - 5.

SELECT anlage

auszdat

FROM ever

INTO TABLE lt_ever PACKAGE SIZE 5000

WHERE anlage NE space

AND auszdat LE lv_sydatum2.

SELECT ablbelnr

FROM eablg

into TABLE lt_eab

FOR ALL ENTRIES IN lt_ever[]

WHERE anlage = lt_ever-anlage

AND ablesgr = '01'

AND adatsoll GT lt_ever-auszdat.

SELECT ablbelnr

from eabl

appending TABLE lt_eab1

for all ENTRIES IN lt_eab[]

where ablbelnr = lt_eab-ablbelnr

and ablstat = '0'.

CLEAR lt_ever.

REFRESH lt_ever.

CLEAR lt_eab.

REFRESH lt_eab.

ENDSELECT.

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