Doubts in biw

hi gurus,
i am novice.i have got some doubts.if any body knows they will be really appreciated.i will give him full points.
d1.what are the limitations of generic extraction?
d2.what is a precalculated value set?
d3.when data compressed we cant go or reconstruction.coz req ids are going to be zeroed.suppose assume that one req is failed .so how u r going to get the data.?
d4in los we run v3 job i mean direct delta and queued delta.in what scenarios we can go for direct in what scenario queued.is there any particular data sources must be used for queued or direct?
if we have got large amount of data which transfer method would we prefer(direct or queued).
plz let me know

d1.what are the limitations of generic extraction?
The data that you extract must be marked by a time-dependent field. Like a creation date or a change date. There are no more limitations that I know of.
d2.what is a precalculated value set?
You probably refer to precalculated query? This is a query that has been prepared (at night) and that can be displayed very quickly. Normal queries are calculated at the moment you open them.
d3.when data compressed we cant go or reconstruction.coz req ids are going to be zeroed.suppose assume that one req is failed .so how u r going to get the data.?
Make sure that you do not compress the most recent x requests. The number of requiests that you want to keep uncompressed can be set.
d4in los we run v3 job i mean direct delta and queued delta.in what scenarios we can go for direct in what scenario queued.is there any particular data sources must be used for queued or direct?
If I remember correctly > 1000 records should go via queued delta. In our system we extract everything via queued delta. Direct delta makes only sense if the customer needs data really quickly (several times a day) which is seldom the case.

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LINES I cant proceed unless its confirmed i can
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Hi all,
Thanks for Looking into my Problem
I Got answer by MySelf ..i dont need to loop again my sub procedures
if i try to do that iam getting the error
ERROR at line 1:
ORA-06511: PL/SQL: cursor already open
Thank you all once again ..

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