Coarse grained and fine grained

I want to now the difference b/wn coarse grained and fine grained entity bean, please explain me with some example

I think the name is self explanatory.However since u do not seem to be very clear i will try and explain.Suppose you have an person entity bean.There are essentially two ways to model the bean.
Essentially u need to identify the sub parts of this person bean.It would have a first name, last name, address, ph.num,ssn and so on.If you were to model this as a fine grained bean in that case you would have all of these as parameters and would be passing the required parameters in the corresponding create method.However the Address portion can comprise of a state,city street,house number and pin.If you were to make this a separate entity which would present a local interface and use a value object to create and return this, this design would make it a coarse grained bean.Hope it makes some sense,if you require any other clarifications i would oblige.
cheers
sicilian

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it's an anology to sand or other particles. You can have sand that is very fine: small grains or you can have sand that is very coarse: large grains.
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Googling coarse-grained atomic:
From http://www.cs.arizona.edu/people/greg/mpdbook/glossary.html
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Hi,
Iâve several 1-1 mapping between one coarse-grained object with several fine grained objects. In the DB all the fine-grained objects are stored in separate table. In my application the relationship between coarse-grained object and fine-grained objects will not be modified. In this scenario, for good performance which solution is better?
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-Mani

Mani,
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Hi Experts,
I loaded HR it went well, but now I am trying to load both HR and Financial Full load. I am getting below issue for some DAC tasks:
ORA-04030: out of process memory when trying to allocate 1049100 bytes (kxs-heap-w,kllcqgf:kllsltba)
Environment:
Source System:
Win server 2008 - 2 GB RAM; EBS R12.1.1.
Target System:
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NAME TYPE VALUE
archive_lag_target integer 0
db_flashback_retention_target integer 1440
fast_start_io_target integer 0
fast_start_mttr_target integer 0
memory_max_target big integer 820M
memory_target big integer 820M
pga_aggregate_target big integer 257374182
sga_target big integer 0
I also tested by increasing below parameters:
memory_max_target 2G
memory_target 2G
pga_aggregate_target 1G
sga_target 900M
But it didn’t work, same errors.
Please let me know how can I solve this issue. Thanks for your time.

The below text is from doc id, I've picked solution part
let me know updates
=====Start======================
Solution
NON-ORACLE SOFTWARE STEPS
1.If you have 4Gb or less of RAM, add more RAM to the 32-bit computer system (add another 4Gb or more, if possible).
2.Enable the /3GB in the BOOT.INI, see note:
Note 225349.1 Implementing Address Windowing Extensions (AWE) or VLM on Windows Platforms
3.If using MS-Windows Enterprise Edition, enable Physical Address Extensions (PAE) by adding the /PAE switch to the BOOT.INI, see note Note 225349.1.
NOTE: The Windows tool Perfmon should be used in ORA-4030 problems on Windows. Task Manager is not a reliable tool to investigate ORACLE.EXE process memory size.
ORACLE SOFTWARE STEPS
Steps for both Enterprise and non-Enterprise Editions of MS-Windows
1.Check for excessive INACTIVE sessions:
select sum(PGA_ALLOC_MEM) from v$process p, v$session s where p.addr = s.paddr and s.status = 'INACTIVE';
If this query returns a large value (i.e. several hundred Megabytes or even greater that 1 Gigabyte), then it is recommended that you automate the cleanup of INACTIVE sessions. To see how this works, see notes;
Note 151972.1 Dead Connection Detection (DCD) Explained
Note 159978.1 How To Automate Disconnection of Idle Sessions
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Set SQLNET.EXPIRE_TIME = x (minutes) in the Server SQLNET.ORA file,
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If you find that the processes remain with status SNIPED, then you will need to implement removal of those processes as well, see note:
Note 96170.1 Script for killing sniped sessions shadow processes
For more information, see Note 601605.1 A discussion of Dead Connection Detection, Resource Limits, V$SESSION, V$PROCESS and OS processes
2.Review Note 46001.1 and determine the pro's and con's of running ORASTACK against the ORACLE.EXE.
If appropriate, shut down the database, and run the following command in an MS-DOS window:
orastack oracle.exe 500000
Re-start the database.
Steps for Enterprise Editions of MS-Windows
Determine if using AWE would fit your database needs. This allows the Buffer Cache component in the SGA to be relocated above the 4Gb memory footprint for the ORACLE.EXE process. Since this configuration requires a virtual memory window to map memory allocations above the 4Gb memory area, this option fits best with database requirements for a 1G and up sized Buffer Cache. It would not be efficient to have a 400M Buffer Cache above the 4Gb memory footprint and yet allocate a 1Gb virtual memory window to map to that memory.
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- If necessary, change the Address Windowing Extensions (AWE) size from the default 1Gb, see Note 225349.1.
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- Adjust the PGA memory setting, PGA_AGGREGATE_TARGET. NOTE: This is a target, so a decrease in this process will not directly affect the memory footprint of the ORACLE.EXE.
- Unset SGA_TARGET and/or MEMORY_TARGET (11g).
- Set USE_INDIRECT_DATA_BUFFERS=TRUE.
- Unset DB_CACHE_SIZE. Set DB_BLOCK_BUFFERS to the desired size (this will use memory above the 4Gb range).
2.Start the database.
Steps for NON-Enterprise Editions of MS-Windows
1.Decide on the size of the SGA and PGA, given 0.1Gb overhead for the ORACLE.EXE and the 3Gb memory limit (as per the BOOT.INI /3GB switch).
2.Adjust the SGA_TARGET and/or MEMORY_TARGET (11g), or use explicit settings for the SGA components and eliminate auto-tuning. NOTE: Advantages of auto-tuning are often minimal on Windows 32-bit due to memory limit issues.
3.Adjust the PGA memory setting, PGA_AGGREGATE_TARGET (optional on 11g). NOTE: This is a target, so a decrease in this process will not directly affect the memory footprint of the ORACLE.EXE.
4.Start the database.

How the prodution order start and finis dates are changeing...?

Dear friends,
It was observed that one of my client's production order start and finish dates are changing frequently.
No user is claiming the responsibility, I feel very dificult to to find out who did the changes.
When I observed, it is happening for orders if we Revert the Teco, and that to for those orders which doesn't have the sale order assignment.
and some times it is not happenign for even for the orders which does not have the sale order assignment also.
Here it is having Forward type Sheduling.
Please help me how and when , the prodcuction orders start and finish dates will get changed.

Dear RS,
Plz check in AUT10, by giving t-code CO02 for order changes
in AUT10, u can track user id also
this may help you to some extent
Regards
kumar
Edited by: kumar kumar on Sep 17, 2009 8:32 AM

Coarse grained and fine grained

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