Difference between nio-file-manager and nio-memory-manager

Hi,
what's the difference between nio-file-manager and nio-memory-manager? The documentation doesn't really discuss the differences as far as I know. They both use nio to store memory-mapped files don't they? What are the advantages/disadvantages of both?
When to choose the first one and when the second when storing a large amount of data? Can both be used to query data with the Filter API? Are there size limits on both?
Best regards
Jan

Hi Jan,
The difference is that one uses a memory mapped file and one uses direct nio memory (as part of the memory allocated by the JVM process) to store the data. Both allow storing cache data off heap making it possible to store more data with a single cache node (JVM) without long GC pauses.
If you are using a 32 bit JVM, the JVM process will be limited to a total of ~3GB on Windows and 4GB on Linux/Solaris. This includes heap and off heap memory allocation.
Regarding the size limitations for the nio-file manager Please see the following doc for more information.
With the release of 3.5 there is now the idea of a Partitioned backing map which helps create larger (up to 8GB of capacity) for nio storage. Please refer to the following doc.
Both can be used to query data but it should be noted that the indexes will be stored in heap.
hth,
-Dave

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Difference between a positive time and negative time management.Explain with screenshots.

Hi gurus!
I would like to know the difference between Positive time management and negative time management.
thx & regards,
raju

Hi Nagaraju,
I am adding more information..
Whether or not an employee is on positive or negative time is determined by the time management status on IT0007. Status 1 or 2 = positive time; status 9 = negative time.
In a standard system, positive time recording means the employee is required to record time (absence or attendance) for any day on which he is scheduled to work according to his generated work schedule. Negative time recording means an employee does not need to record time unless he has an exception to his normal working time; so absences are typically recorded as well as overtime or time work on days for which the employee is not scheduled to work.
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Negative time employees use the following data import statements:
P2000 This is the critical difference between positive and negative employees. P2000 loads the daily work schedule to the TIP table as if the employee workede; that is, if the employee is scheduled to work from 8:00 to 17:00, this record will now appear on TIP. The work schedule details are also added to TZP.
P2001 Load absences -- to pick up exceptions to planned working time
P2002 Load attendances -- again to pick up exceptions, special costing information, overtime, alternate payments, premiums or any other variation from normal schedule work.
So if you want to determine if you are using positive or negative time, check the time management status on the employees.
Regards
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Difference between logical file path and physical file path

Hi,
Can anyone tell me why logical file path is required and why physical file path is required? What exactly is the difference bet them?
Thanks in advance.
Regards,
PS.

Hi,
The function module FILE_GET_NAME convert a logical path into its corresponding physical path.
The advantage of using logical pathes within your applications is obivous:
If you need to change the physical path you just adjust it within transaction FILE yet no changes are required to your application.
http://help.sap.com/saphelp_erp2005vp/helpdata/en/25/ab3a57df3b11d189fc0000e829fbbd/frameset.htm
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Maintaining platform-independent filenames is part of Customizing. For a full description, choose Tools ® Business Engineer ® Customizing, followed by
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Another way of maintaining platform-independent filenames is to use the Transaction FILE. The following sections provide an overview of the transaction.
To create a logical filename, choose Logical filename definition, client-independent from the Navigation group box in Transaction FILE, then choose New entries. You define logical filenames
You can either define a logical filename and link it to a logical path (as displayed here), or you can enter the full physical filename in the Physical file field. In the latter case, the logical filename is only valid for one operating system. The rules for entering the complete physical filename are the same as for the definition of the physical path for the logical file. To display further information and a list of reserved words, choose Help.
If you link a logical path to a logical file, the logical file is valid for all syntax groups that have been maintained for that logical path. The filename specified under Physical file replaces the reserved word in the physical paths that are assigned to the logical path. To make the name independent of the operating system, use names that begin with a letter, contain up to 8 letters, and do not contain special characters.
Save your changes.
regards,
Omkar.

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Ali,
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Difference between db file sequential read and scattered read

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Oracle Version : 10.2.0.1
Operating system: Linux
Can any one please help me what is the difference between db file sequential read and scattered read or please give any best related links .
Thanks & Regards,
Poorna Prasad.

>
A sequential read is a single-block read. Single block I/Os are usually the result of using indexes.
A db file scattered read issues a scattered read to read the data into multiple discontinuous memory locations. A scattered read is usually a multiblock read. It can occur for a fast full scan (of an index) in addition to a full table scan.
>
See Performance Tuning Guide:
http://download.oracle.com/docs/cd/B19306_01/server.102/b14211/instance_tune.htm#i20526
http://download.oracle.com/docs/cd/B19306_01/server.102/b14211/instance_tune.htm#i15958
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Please let me know with appropriate explanation.

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I did re-set my password and when I click on Install for Mavericks, I still get a box for "administrator password" and it still won't accept my new password. Is there a difference between my Apple ID and the administrator password they're asking for?

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Hello Team,
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Difference between nio-file-manager and nio-memory-manager

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