ATP logic and RLT

Dear experts,
Can you tell me the difference b/w ATP logic and RLT logic in availabity check i know both are working in invidually- but how it is controlling the functional wise i am not able to understand.
Pls dont give the answere wt is ATP and RLT how its works indvidually?.
I need the answer how functional wise it is differenciating the business function and controlling the availability check?
Regards
Ishikesh

Hi Ishikesh,
I will try again with same example :
See During ATP qty calculation the system checks that all the in hands orders are covered by
existing receipts and also whether qts are left to cover the new orders.
These qts
that have not been assigned constitute ATP qty
Example :
Requirements of material MAT Qty 10 pcs
stock 25 pcs
If material is checked for availability then the system says material is
available.
Now the modifications happend here and ATP Qty will become 25-10 = 15 pcs
This 15 pcs is now ATP Qty. Means if another customer will come and oRDER 17 piece then system will only confirm 15... that Available to Promise Quantity.
You can check this from MD44 transaction.
http://help.sap.com/saphelp_47x200/helpdata/en/f4/7d327a44af11d182b40000e829fbfe/frameset.htm
RLT Logic : The definition says that it is the time needed to produce the requested stock. It can be the time taken by the business to produce a material or the time to taken to procure it externally from a vendor. This includes the goods receipting time. RLT is the time taken for the material to become available. It is used only when doing ATP check. The value of RLT for a materail is specified on the material master.
Now say Mr TEST has ordered 17 quantity, but after ATP system will confirm 15 Qties and Remaining 2 qtys it will check based on RLT when it can confirm.
Hope i cleared your doubt. Do give ur feedback.
Thanks,
Raja

Similar Messages

Availablity check with ATP logic

Hi everybody
Can any one tell me where where we assign Checking rule (A - sales order) in availablity check.

dear srikanth
please gothough this
TOR AND AVAILANBILITY CHECK
To confirm the quantities for a particular line item in the sales order on particular day system carried out transfer of requirements (TOR) & AVAILABILITY check, so has to confirm the quantity on particular day as system should know what are there requirement of the sale order and delivery with MRP then system carries out availability check function, to confirm the quantity on particular day. Depending upon the IMG setting system carries out availability check function based on 3 methods:
A) Availability Check with ATP logic or against planning:
In ATP logic systems ATP Qty while carrying out availability check function for
Particular line item (ATP qty=warehouse stock +planned receipts planned issues)
Planned Receipts: EX: - purchase requisitions, purchase orders, stock in transfer stock at inspection etc.
Planned Issues: - EX: - open sales order & open delivers
B) Availability check against product allocation:
Availability check can be carried out against product allocations in which system automatically restrict the user to confirm the quantity beyond reserved quantities per particular customer. EX:- Availability qty =100, existing orders=10,then system automatically distributes to items evenly to the sales order.
C) Rule based Availability check:
Rule based availability check can be carried out based on the business transaction.
EX: - For normal sales order system has to carry out availability check for special sales order ex: - cash sales and rush order systems need not to be carry out availability check,
In rule based availability check system in which system carried out Global availability to promise in all plants. In this check system transfers the requirements to APO system where GATP takes place and the result of the availability check transferred to R/3 system. This process takes place with the transaction code CIF(central inter face) inR/3.After carrying out availability check function system proposes(by using ATP logic) default values of ATP check result to the user in a dialog box, in which system gives the choice to the user to take the decision in contest of insufficient stock.
a) One time delivery:
If the user chooses one time delivery and the order Quantity is 100 units system confirms 50 units then systems automatically confirms as a zero. If the user saves the document with the zero confirm qty then system   trace the sales order as aback order (V_RA), which can be confirmed later by RESCHEDULLING (V_V2).
b) Complete Delivery:
If order Qty=100, Availability stock = 50, system says that remaining can be given after one week. Then if the user selects this option then system push up existing confirmed qty to after one week and the total qty can be confirmed after one week only.
c) Delivery Proposal:
If order qty=100, system confirms 50, and remaining 50 can be confirmed after one week. If the user chooses this option then system confirms 50 Qty today allows the user to delivery 50 quantities today remaining 50 can be delivered after one week.
CONFIGURATION SETTINGS FOR TOR:
Define Requirement Class:
Path: Img  S&D  Basic functions  Availability Check & Transfer of requirements  Transfer of requirements    Define Requirement classes
Requirement classes control MRP, Requirement consumption, strategy, relevance for planned. It specifics whether the availability check & TOR to be Called out for transactions. Ex: Sales Order
It determines whether requirements relevant for MRP or not, the allocation indicator from the sales view which controls the settlement of customers requirements with planned independent requirements. It determines the item b to be settled as an availability heck. Assignment, the settlement profiles the results analysis key. The TOR and Availability check functions are globally controlled using the requirement class for all the Sales documents. The values from the Requirements class are transferred to scheduled the of the sales documents class are transferred to scheduled the of the sales document default values and can be over written there.
Define Requirements Classes:
Requirement class defines whether the system has to carry out availability check based on the STP Qty. Ex:
Define Requirement Types:
Here we define requirement type, Ex: and Assign to Requirement class that we defined in the promote step.
Determination of Requirement types using Transaction:
Requirement type is going to be determined for sales document by following a search strategy. .
First System checks strategy group in MRP3 view if it trend requirement type then system takes from it, otherwise.
It will go to MRP group in MRP1 view, otherwise
It will check to Material type, otherwise
It will go to item Category + MRP type, otherwise
It will go to Item category only, otherwise
Finally system determines the transaction b not relevant for TOR & Availability check.
Choose Item category TAN+MRP type PD=Requirement type =0
Define Procedure for each schedule the category:
Here we define respective schedule the category of the sales documents, whether an availability check and TOR should be carried out. This setting is relevant for sales documents only. It is fine tuning of availability check for sales documents TOR & Availability check function    can be activated at sales order level those are proposed in to schedule line category level. If u wants to deactivate TOR availability check function at schedule the category level and want to deactivate at requirement class level it b impossible.
Ex: If u wants to check availability w/o transferring the requirement we can use it.
Choose schedule line category CP & Activate Availability check, requirement & Product Allocation
Block Quantity confirmation in delivery Blocks:-
When we transfer requirements to MRP then confirmed quantities is also reserved for confirmed sales documents, if transaction is blocked for delivery the reserved quantities are also blocked so that the conformed quantities cannot be used by any other purpose. So has to avoid this situation we can block the transfer of requirements(TOR) for delivery blocks, in this case requirements transferred to MRP but will not be reserved, that will be cleared once we save the documents then system shows confirmed qty as zero.
When we remove the delivery block then system automatically carries out availability check & confirms the qty.
A) Deliveries: Blocking region for sales Area:
     Here we define blocking regions for TOR ex:-credit limits
B) Reasons for scope of delivery blocks: TOR. Block:
Ex: - 01 credit limits-check confirmation block.
Maintain Requirements for TOR:-
Here we can define our own requirement with the help of ABAPer for TOR
Ex: - a) 102- prevent reservation in the event of credit block
       b) 102-purchase requisitions.
System doesnt create purchase requisitions for sales order line items if it has a credit limit.
Availability check:
Configuration setting:-
Availability check with ATP logic or against planning:-
A) Define checking group:
Checking group defines what kind of requirement record system use to create when sales order & deliveries are processed for this material. We can create 2 kinds of requirements records
Individual requirement records: that means system creates requirement record for each S&D document.
Summarized requirement Records: That means system creates requirement records under certain condition in the material master record. There are 2 type of summarized requirement record:
Summarized requirement records for each day.
Summarized requirement records for each week
Define checking Action;
Here we define     01- daily requirement      -B                                        02- Individual requirements -A
Where      B-total record per day
     A-single record per day
B) Define material Block for other users:
When 2 users tries to confirm the quantities for the sales order for same material at a time system will be confused to confirm the quantities both sales orders. So has to avoid this kind of situation we can block the materials from confirming the quantities for 2 users at a check, check block
C) Define checking group default values:
Checking group is going to be determined depending upon the material type & plant.
-Go to new entries, specify material type, ex;-FERT
& plant = checking group of availability check: 02
D) Carry out for Availability check:
Here we define checking rule for the Availability check & allocate them to the checking group. The checking rules specify the scope of the availability check. For a respective transaction, means which planned receipts & planned issues systems has to taken into consideration and also it determines whether system has to take RLT into consideration.
*Select checking group of availability check-02, checking rule=01
*Go to details icon, & check which planned receipts & planned issues system has taken into consideration for availability check
*save it, exit.
E) Define procedure by Requirement class:
Here we define requirement class whether on availability check & TOR should be carried out the setting that we carries out at requirement class level they are at global level. There settings automatically copied into define from of requirement class and vice versa.
*Choose requirement class: 041 & check availability check & TOR (requirement)
F) Define procedure for each schedule line category:
Here we carry out fine tuning setting for availability check at schedule line category level. Here we define whether system has to carry out Availability check for particular transaction.
Ex: - if we want to implement availability check w/o TOR for a particular transaction. According to settings at requirement class level TOR & availability check function activate & those setting will be copied into the schedule time category by default, so that at schedule line category level we deactivated TOR
G) Determine procedure for each Delivery Item category:
Here we switch on or switch off availability check functions of a delivery item category
*choose item category TAN. & specify the appropriate value.
H) Checking group for updating back orders:
Here we assign checking group to a plant that rule specifies for individual application, according to which the availability check is carried out;
I) Define Default settings:
Here we define the result of the availability check.
*Choose your sales Area, & check fixed dates& Qty options & specify D or E
Where: D- Dialog box in the case of shortages (one time delivery)
E- Dialog box in the shortages (delivery proposal).
rewards if it helps
siva

ATP logic in pure MTO scenario (strategy 20)

Dear Gurus,
In MTO scenario, how can we define the ATP logic to confirm the sales order? During the sales order creation, I want to check the delivery lead time + plant capacity for a particular workcenter group (bottle neck work center group). Please give me some idea in this regard.
Regards,
Surya.

Hi Surya
I have solution for your scenario
you need to use the Lot dependent Inhouse production time which is maintained in work scheduling view of the material master..
there is Standard SAP transection -CA96 thru which you can transfer the routing timings to material master and it'll be trating as actual inhouse procuction time for calculation of deleivery date in MTO scenario while creating sales order..
What you need to actually do for pactical solution - mean to give a realistic date to customer based on routings...
you need to constantly update the queue time at work center level and transfer the same to material master every morning..
you have option to do this in mass based on plant and production scheduler
pl try this and i hope it'll work perfectly..
pl come back for any further clarification
BR
Sumit

Availability Check with ATP Logic or Against Planning-reg

hi gurus,
what is the difference between
Availability Check with ATP Logic
or
Against Planning
means can we have two types of check?
how can we do against planning?
rajendra

Hi Prasad,
I think it would not possible to maintain to procedures at the same time for single material.
availability check against ATP is allowcation of material based on certain rules like which we set under basic functions - AC.
In this process you cant allocate the stock for specific customer.
In case of AC against planning you can allocate each and every material along with qty to specific customers.
Please see the configuration required for planning.
1. Allocation Procedure (OV1Z) the product allocation procedure is the parent of the entire allocation process. All materials that are to be included in the allocation scheme are required to have an allocation procedure assigned to it in the material master. In addition, as of release 4.0, it is in the procedure that the method of allocation is defined. The user has the opportunity to set an indicator to identify their choice of two different methods (discrete and cumulative allocation) to evaluate the quantities to be considered for product allocation.
2. Allocation Object (OV2Z) the allocation object is the root level of the allocation process where actual data is entered and planned in LIS. The object allows the user to further break down a procedure into smaller parts for future validation of components comprising a specific material
3. Allocation Hierarchy Mapping (OV3Z) Primarily, this transaction permits the assignment of an allocation procedure to an LIS information structure. Secondly, a character is assigned to the information structure to permit collective planning. Finally, the user can assign a step level to the procedure and information structure to sequence the order in which allocation quantities are checked. This functionality allows the user the opportunity to check product allocation against several product allocation scenarios, before the required quantity is confirmed
4. Define Consumption Periods (OV5Z) The allocation consumption periods functionality is only valid if the allocation method flag has been set (OV1Z). If you have de-selected the method field, this functionality is not available. The consumption window indicates the number of past and future periods to be used in the allocation check.
5. Control Product Allocation (OV4Z) In order for the allocation process to function properly, allocation control records are created primarily to map allocation procedure steps to their corresponding objects so that the allocation data records can be located for validation. Secondly, validity periods must be established to indicate when the allocation control records are active. Finally, the user has the option of establishing a conversion factor per allocation control record to accommodate BOM listings of constrained materials
6.Activate Allocation for Requirement Class (OVZ0) In order to turn on allocation in the standard order processing functionality, the requirements class must have a flag indicating that allocation is relevant.
7. Activate Allocation for Schedule Line Category (OVZ8) In order to turn on allocation in the standard order processing functionality, the schedule line must have a flag indicating that allocation is relevant
8. Create Planning Hierarchy (MC61) In order to adequately establish allocation quantities, the user must initially determine the level at which the allocation is to take place and the aggregation factor of the allocation quantities. In this step, the levels for the collective allocation search procedure are also identified.
9. Generate Masking Character (OV7Z) Upon completion of the level determination for the planning hierarchy, the collective allocation masking character must be generated to allow aggregation indicators to be established. This transaction simply reads the hierarchy established in the planning table and then generates a collective mask character for each level of the hierarchy
10. Modify Planning Hierarchy (MC62) This step is a repeat of MC61 where the initial hierarchy was established. In order to complete the hierarchical set up, the collective allocation (mask character) hierarchy must now be maintained with the appropriate aggregation factors
11. Allocation Procedure Assignment to Material Master (MM02) At the root level of the allocation process are the materials. Each material that is to be considered in allocation scenario must be mapped to an allocation procedure. In order entry, then, when a material is entered with a valid allocation procedure in the material master, the allocation data is verified prior to confirming the line item ordered
12. List of Suitable Structures (OV9Z) This report is used to identify potential LIS information structures that can be used in the product allocation process. This report simply reads through the data dictionary and selects all the active information structures that contain the field product allocation object (KONOB) as the first field. This data can then be utilized in the mapping transaction (OV3Z) to link the allocation procedure step to an information structure (previous step).
Reward if helpful.
Regards
Raj

Logical AND in MDX Reporting Services Parameter

Hi, I would like to implement logical AND on a cube parameter. I have seen examples of hard-coded logical AND in MDX.
(http://salvoz.com/blog/2013/12/24/mdx-implementing-logical-and-on-members-of-the-same-hierarchy/)
But I'm not sure how to apply this to a parameter's MDX dataset.
Here is an example of the automatically generated MDX which uses logical OR:
This is the drop down parameter:
WITH MEMBER [Measures].[ParameterCaption] AS [Department].[Department].CURRENTMEMBER.MEMBER_CAPTION MEMBER
[Measures].[ParameterValue] AS
[Department].[Department].CURRENTMEMBER.UNIQUENAME MEMBER [Measures].[ParameterLevel] AS
[Department].[Department].CURRENTMEMBER.LEVEL.ORDINAL
SELECT {[Measures].[ParameterCaption], [Measures].[ParameterValue],
[Measures].[ParameterLevel]} ON COLUMNS
, [Department].[Department].ALLMEMBERS ON ROWS
FROM [MyCube]
And the demo report dataset is:
SELECT NON EMPTY { [Measures].[CompanyTbl Count] } ON COLUMNS,
NON EMPTY { ([Product Level No].[Product Level No].[Product Level No].ALLMEMBERS ) }
DIMENSION PROPERTIES MEMBER_CAPTION, MEMBER_UNIQUE_NAME ON ROWS FROM
( SELECT ( STRTOSET(@DepartmentDepartment, CONSTRAINED) )
ON COLUMNS FROM [MyCube]) WHERE
( IIF( STRTOSET(@DepartmentDepartment, CONSTRAINED).Count = 1,
STRTOSET(@DepartmentDepartment, CONSTRAINED), [Department].[Department].currentmember ) )
CELL PROPERTIES VALUE,
BACK_COLOR, FORE_COLOR, FORMATTED_VALUE, FORMAT_STRING,
FONT_NAME, FONT_SIZE, FONT_FLAGS

Hi,
I can see there just one parameter @Department@Department in your script. But if you had two parameters that should return resultset affected by two parameters. You can do it as either select from subselect from subselect.
Example 1
SELECT
{x} ON COLUMNS,
{ROWS_SET} ON ROWS
FROM
(SELECT StrToSet(@Param1) ON COLUMNS FROM
(SELECT StrToSet(@Param2) ON COLUMNS FROM
[CUBE_NAME]
Or crossjoin between 2 parameters
SELECT
{x} ON COLUMNS,
{ROWS_SET} ON ROWS
FROM
(SELECT StrToSet(@Param1)*StrToSet(@Param2) ON COLUMNS FROM
[CUBE_NAME]
Jiri
Jiri Neoral

What is a Logical and Physical file path in sap?

what is a Logical and Physical file path in sap?

Hi,
Physical file is what you see from the OS level.
Logical file is what ABAP code can call certain functions to read/write.
Transaction FILE would link them together. Typically the logical path ends with "<FILENAME>", and the logical file refers to the logical path.
To extract the physical path from the logical path name
DATA: lf_mandt TYPE sy-mandt,
        lf_opsys TYPE sy-opsys.
lf_mandt = sy-mandt.
lf_opsys = sy-opsys.
To extract the physical path from the logical path name
CALL FUNCTION 'FILE_GET_NAME'
    EXPORTING
      client           = lf_mandt
      logical_filename = p_unix
      operating_system = lf_opsys
    IMPORTING
      file_name        = gwa_input
    EXCEPTIONS
      file_not_found   = 1
      OTHERS           = 2.
IF sy-subrc EQ 0.
Concatenating the physical path and the input unix file name
    CONCATENATE gwa_input p_file INTO gf_file .
ENDIF.
Reward if helpful.
Regards,
Ramya

Logical AND not working in the forum search box

Logical AND of search terms does not seem to be working in the MSDN forum search box. Example: I go to the Project Customization and Program forum and type the word
subproject
in the search box. I get a lot of hits. So now I try to reduce the number of hits by typing
subproject AND read
Surprisingly, I now get MORE hits than before. The same thing happens if I enter
subproject & read
Do the MSDN forums not support the standard logical AND combinations of search terms? If they do support these combinations, what is the syntax?
Jim
...Jim Black

Cheers, you're welcome.
There's a thread going in the Suggestions forum with plenty more requests for updates to the search tool. You may want to add your voice there too:
http://social.technet.microsoft.com/Forums/en-US/9cf8ad4b-5111-4f84-9809-99cd8f1b7152/make-the-forum-search-tool-useful?forum=suggest
Don't retire TechNet! -
(Don't give up yet - 12,950+ strong and growing)

Logical and physical clear in ASO

Hi There,
I found one statement for Logical and physical clear in essbase dbag
The process for logically clearing data completes in a length of time that is proportional to
the size of the data being cleared.
The process for physically clearing data completes in a length of time proportional to the
size of the input data, not to the size of the data being cleared
What does size of the input data actually means? How it is different from data being cleared.
Thanks.

What is interesting with these statements is based on them, you would think a logical clear would be slower than a physical clear. In reality, it is vastly faster. I took a 30 minute physical clear down to about 40 seconds with a logical clear. Logical clers create offsetting entries from the main cube in a slice to produce a result whila a physical clear deletes the actual data. The one thing about logical clears is rather than have #missing for cleared intersections you get zeros

Logical and physical file paths

Hi,
can anyone elobrate me on what are logical and physical file
paths ?

hi,
Follow this link
http://help.sap.com/saphelp_nw04/helpdata/en/fc/eb3deb358411d1829f0000e829fbfe/frameset.htm
File format determination (Required / optional fields and field checks).
Logical File Path configuration through transaction 'FILE'. A new physical file path should be created on operating system level or an existing one can be used if agreed. The Basis team member should create a new file path at operating system level, if required.
Hope this helps, Do reward.

Logical AND in Java Regular Expressions

I'm trying to implement logical AND using Java Regular Expressions.
I couldn't figure out how to do it after reading Java docs and textbooks. I can do something like "abc.*def", which means that I'm looking for strings which have "abc", then anything, then "def", but it is not "pure" logical AND - I will not find "def.*abc" this way.
Any ideas, how to do it ?
Baken

First off, looks like you're really talking about an "OR", not an "AND" - you want it to match abc.*def OR def.*abc right? If you tried to match abc.*def AND def.*abc nothing would ever match that, as no string can begin with both "abc" and "def", just like no numeric value can be both 2 and 5.
Anyway, maybe regex isn't the right tool for this job. Can you not simply programmatically match it yourself using String methods? You want it to match if the string "starts with" abc and "ends with" def, or vice-versa. Just write some simple code.

BEx Formula Use of 'Logical And' and Calculation for Gross Margin

HI Bex gurus.
Having an odd time with what should be a simple formula to handle the display of gross margin (GM). The goal here is to display GM% properly and the requirement is as follows
If GM <= 0 then 0.0
Else
If GM > 0 and Sell > 0 then ( ( sell - cost /sell ) * 100 )
Else
If GM >0 and Sell = 0 then 100
I am familiar with bex formulas and have referenced the help docs on booleans here -
Boolean Operators - SAP Business Explorer - SAP Library
But what is odd is that if I use a calculation or a CFK in the IF, THEN with a LOGICAL AND, the formula does not report correctly
If I put in a static value, like 77, the expected logic is followed. I have tried making sure have extra parentheses and changing the order of the statement, to no avail! I could use some extra brains on this puzzling matter, so you help is greatly appreciated and will award points!
Thanks
lee lewis
Here are the formulas in text and below screen shots. Wish could copy and past formulas to and from editor!
GM%77
( ( ( 'Order GM' >0 ) AND ( Order Sell > 0 ) ) == 1) * 77 + ( ( ( 'Order GM'> 0 ) AND ( Order Sell == 0 ) ) == 1) * 100 + ('Order GM' <= 0) *0.0
GM%
( ( ( 'Order GM' >0 ) AND ( Order Sell > 0 ) ) == 1) * 'REF GM%' + ( ( ( 'Order GM' > 0 ) AND ( Order Sell == 0 ) ) == 1) * 100 + ('Order GM' <= 0) *0.0
'REF GM%
(order sell - order cost /order sell ) * 100 )
GM%77
GM%

Shouldn't you change on of the brackets in your REF GM% ?
'REF GM%
(order sell - order cost /order sell ) * 100 )
I would put that as
'REF GM%
(order sell - order cost) /order sell * 100 )
Not sure what you mean with those red arrows... but in both cases you would be dividing by 0 (order sell = 0).

Ivé just recived logic and I wonder: can I use the registration for logic on all my computers or is it limited to just one?

Ivé just recived logic and I wonder: can I use the registration for logic on all my computers or is it limited to just one?

You can install it on 2 Apple computers

Noob needs help with Logic and Motu live setup.

Hello everyone,
I'm a noob / semi noob who could use some help with a live setup using 2 MOTU 896HD's and Logic on a Mac.
Here's the scenario:
I teach an outdoor marching percussion section (a drumline and a front ensemble of marimbas and vibes). We have an amazing setup of live sound to amplify and enhance the mallet percussion. There is a yamaha PA system with 2 subs and 2 mains which are routed through a rack unit that processes the overall PA balance. I'm pretty sure that the unit is supposed to avoid feedback and do an overall cross-over EQ of the sound. Other then that unit, we have 2 motu896hd units which are routed via fire-wire. I also have a coax cable routing the output of the secondary box to the input of the primary box (digital i/o which converts to ADAT in (i think?)..?
Here's the confusion:
There are more then 8 inputs being used from the ensemble itself, so I need the 16 available inputs to be available in Logic. I was lead to believe that the 2nd motu unit would have to be sent digitally to the 1st motu unit via coax digital i/o. Once in Logic, however, I cannot find the signal or any input at all past the 8th input (of the 1st unit).
Here's the goal:
All of my performers and inputs routed via firewire into a Mac Mini running OSX and Logic pro.
I want to be able to use MainStage and run different patches of effects / virt. instruments for a midi controller keyboard / etc.
I want to be able to EQ and balance the ensemble via Logic.
Here's another question:
How much latency will I be dealing with? Would a mac mini with 4gb of ram be able to handle this load? With percussion, I obviously want the sound as latency free as possible. I also, however, want the flexibility of sound enhancement / modification that comes with Logic and the motu896hd units.
Any help would be REALLY appreciated. I need the routing assistance along with some direction as to whether or not this will work for this type of application. I'm pretty certain it does, as I have spoken with some other teachers in similar venues and they have been doing similar things using mac mini's / logic / mainstage / etc.
Thanks in advance,
Chris

You'll definitely want to read the manual to make sure the 896HDs are connected together properly. ADAT is a little tricky, it's not just a matter of cabling them together. Go to motunation.com if you need more guidance on connecting multiple devices. Beyond that initial hookup, here are a couple of quick suggestions:
1. Open CueMix and see if both devices are reported there. If not, your connections aren't correct. Be sure to select 44.1kHz as your sample rate, otherwise you are reducing the number of additional channels. For instance at 88.2kHz you would get half the additional channels via ADAT.
2. You may need to create an aggregate device for the MacBook to recognize more than the first 896HD. Lots of help on this forum for how to do that. Again, first make sure you have the 896HDs connected together properly.
3. As for latency with Mainstage on the Mini, no way to know until you try it. Generally MOTU is fantastic for low latency work but Mainstage is a question mark for a lot of users right now. If the Mini can't cut the mustard, you have a great excuse to upgrade to a MacBook Pro.

Difference between logical and virtual terms

Hello,
This is not purely oracle question; but in documentation so many times we find 2 terms:
A. Logical
B.Virtual.
So what is the principle difference between logical and virtual? As I know physical is that which I can see and touch; while logical/virtual is that is imaginary. We say tablespace is logical not virtual; while Java Virtual Machine; not Java Logical Machine. So I want to know; what is the principle difference; why two words for an imaginary thing. Before posting question; I searched in google as “Difference between virtual and logical” but I couldn’t found the answer.
Please quote your comments.
Thanks & Kind Regards
Girish Sharma

Girish,
I wont say that I am correcting you as this is like that half glass full/empty thing.May be what I see is half empty , you would see the same as half full.
Well now coming to the explanation.I am saying honestly , I got more confused after reading your definitions.What do you mean by saing that tablespace is not virtual.I see it as purely virtual.We don't say it as virtual tablespace or logical tablespace but it is actualy logical/virtual, having no existance but just the definition right?
How can you say that the size of virtual is larger than logcial?The size of tablespace is actualy the sum total of size of datafiles.So it actualy becomes very larger right?Much larger than JVM which is of few megs only.
The point 3 totally knocked me out.I have no idea what you said.
Ok I tell you this.Just remember the definition that Hans gave already.If you ask me than its the best definition that we can have. Just remember this and if some one asks you more further than give them your point 3 definition and tell them understand this ;-).Please don'tmind I am just kidding. Its just semantics.Don't get lost into it.You will find many people using both the terms interchangibly. So its ok.I shall stick with Hans's defintion,simple and concise.There are lot more other topics to dig upon in oracle.I can mail you lots of them.Spend time on those.Don't think that I am demotivating you.I understand you asked only because you have a doubt.But we got a good resolution of it and beyond that, its not of much use to dig it atleast not in the technial terms.
Cheers
Aman....
PS:Are you on oraclecommunity.net?

I am trying to stop encryption in fire vault, but I keep getting the message, The target disk isn't eligible for reversion because it wasn't created by conversion or it is not part of a simple setup of exactly one logical and one physical volume.¨

I am trying to cease encryption in fire vault, Mac os x lion 10.7 4
I keep getting the message,
¨The target disk isn’t eligible for reversion because it wasn’t created by conversion or it is not part of a simple setup of exactly one logical and one physical volume.¨
Please can someone advise the way to disable?
Thank you.

Are you using Boot Camp? See this discussion at MacRumors.
Clinton

ATP logic and RLT

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