Is IOT good for huge inserts

hi all
I am in the process of designing tables for our new system. We want to prevent duplicated rows from being inserted into tables. For this purpose,i want to utilize IOTs instead of heap tables cause almost all the columns of our tables are primary keys.
After talking to our application desigers, i was told that these table will have dense inserts at every monment.
I dont't know if IOT suitable for this sitution becase i have googled alot that there are sayings that IOT only suitable for static tables.
Any input will be appreciated.

When to use IOTs:
1. "An IOT is structured almost identically to a normal index. They are best used for relatively static lookup tables, that are always accessed through primary keys. If the mass update is an infrequent thing, and the table is mostly used for lookup, then I would likely go ahead and use an IOT and take the slow update performance occasionally. However, if mass updates are a frequent occurence, then this is probably not a good candidate for an IOT."
By John Spencer
Source:Re: IOT slower to update
2. When the table basically consists of its primary kay and not much else, and when we access the table only through its primary key. The canonical example is a code lookup table, where we have two columns CODE and MEANING.
By APC
Source:When we Use Index Organized Table(IOT)?
3. "IOT with 1 million inserts - maybe that works for you performance-wise, but kind of goes against the idea of IOT (better for updates, not as good for frequent inserts).
What about MVs? Use the main/frequently used columns. With 1 million inserts a day (or about 694 inserts per minute), what human in your organization is going to be able to keep up with that rate of change? "
By SteveC
Source:http://dbaforums.org/oracle/index.php?showtopic=11146
4. So, before reaching to any conclusion, i will read following too:
a)http://www.oracle.com/technology/products/oracle9i/pdf/iot_twp.pdf
b)http://www.oracle.com/technology/products/oracle9i/datasheets/iots/iot_ds.html
c)http://www.orafaq.com/forum/t/145827/0/
d)http://www.peled.com/white_papers/iot.pdf
HTH
Girish Sharma
Edited by: Girish Sharma on Dec 9, 2009 11:09 AM
3rd Point added..

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[svn:fx-trunk] 11454: ASyncList class ASDoc change: added explicit warning about the lack of support for re-inserting pending items .

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ASyncList class ASDoc change: added explicit warning about the lack of support for re-inserting pending items.
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Many thanks,
Yang

Dear Yadav
There are two order type ZAA1 - standard ZAA2 - promotion
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I made a test to change the item category assignment as ZAA1 with ZDC1 and ZAA2 with ZDC0.
Still the free goods can automatically captured with standard order but promotion failed.
So I think the difinition of item category is no problem and it may related to sales order type.
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Constraints of Free goods in R3
Free goods can only be supported on a 1:1 ratio. This means that an order item can lead to a free goods item. Agreements in the following form are not supported: u2018With material 1, material 2 and material 3 are free of chargeu2018 or u2018If material 1 and material 2 are ordered at the same time, then material 3 is free of chargeu2018.
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These are Taken from SAP library and answers your query
But With IS Retail bouns buy schemes this is possible
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Std SAP itself doesnt support Free Goods at quotation level
Standard SAP supports Free Goods at quotation level and hence the item categories AFNN and AGNN are provided in the standard SAP. But, the Automatic determination of Free Goods is not possible for SD documents under category other than 'C'.
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Constraints in free goods in R3 taken from SAP library
Free goods can only be supported on a 1:1 ratio. This means that an order item can lead to a free goods item. Agreements in the following form are not supported: u2018With material 1, material 2 and material 3 are free of chargeu2018 or u2018If material 1 and material 2 are ordered at the same time, then material 3 is free of chargeu2018.
Free goods are not supported in combinations with material structures (for example, product selection, BOM, variants with BOM explosion).
Free goods are only supported for sales orders with document category C (for example, not quotations).
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Free goods cannot be used in make-to-order production, third-party order processing and scheduling agreements.
If you defined a free goods for variants in a generic article (only SAP Retail), you can only process the variants in the purchase order and goods receipt individually (as single articles). In other words, you cannot process them using the generic article matrix.
This answers your qn Not possible in R3
If you are on Retail scenario this is possible thro bonus buy schemes
But a lot of customizations needs to be done and you need a retail server to do that
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Hello SAP Gurus,
we have a business requirement that to issue multiple free products for one main product, if the upliftment is beyond the specified quantity.
Using free goods functionality, is it possible to achive the above requirement.
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Constraints in free goods in R3 taken from SAP library
Free goods can only be supported on a 1:1 ratio. This means that an order item can lead to a free goods item. Agreements in the following form are not supported: u2018With material 1, material 2 and material 3 are free of chargeu2018 or u2018If material 1 and material 2 are ordered at the same time, then material 3 is free of chargeu2018.
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Free goods are only supported for sales orders with document category C (for example, not quotations).
Free goods are not supported for deliveries without reference to a sales order.
Free goods cannot be used in make-to-order production, third-party order processing and scheduling agreements.
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If you are on Retail scenario this is possible thro bonus buy schemes
But a lot of customizations needs to be done and you need a retail server to do that
Regards
Raja

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Hi Experts,
I have requirement to determine free goods for perticuler product when you enter in quotation line item
We hv standard sap option for sales order that will determine free goods in sales order.
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Hi
Std SAP itself doesnt support Free Goods at quotation level
Standard SAP supports Free Goods at quotation level and hence the item categories AFNN and AGNN are provided in the standard SAP. But, the Automatic determination of Free Goods is not possible for SD documents under category other than 'C'.
In your scenario...since the automatic determination is not possible, think about handling the functionality manually or through user exits.
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