PreparedStatement and performance..

<html>
 Q1: Increases Network calls?? 
 Where there is a table with large number columns , does a bind call to each column from a middle tier makes a network round-trip to the database?? Or does the Oracle JDBC driver cache binds to all columns and send them over in one call?? 
 
 Q2: Is the Statement faster then PreparedStatement for such large tables?? 
If the answer to Q1 is yes, Will the recompilation needed by a Statement with values concatenated as literals in the SQL text beat the combined speed of such numerous bind calls ?? 
 Q3. Recompilation of Statement Vs Oracle SQL Cache 
 Are Q1 and Q2 moot ?? I.e If different values are concatenated to the Statement SQL text, does that in itself force Oracle to treat it as a different SQL or Has Oracle become advanced enough to treat literals as bind values and hence reuse a Statement cursor with diff. literal values executed in the past in the Cache?? 
 
 Q4. If Q3 is NO: PreparedStatement VS cached Cursor reuse 
 If the anwser to Q3 is NO - i.e Statment is inefficient, then can we conclude that PreparedStatement offers double advantages. i.e. within the same session multiple executions are faster , since we only rebind. Also if the connection is closed and PreparedStatement is also closed , but the if same PreparedStatement is reopened in a new Session within the near future, Oracle will reuse the Cached statement, since the SQL text with place-holders('?' marks) definitely matches it. Whereas a Statememt with new literal values concatenated in is a new Statement for every new execution?? 
 
 Q5. Is Q4 moot: PreparedStatement Vs mutiple Sessions 
 Does closing and reopening a PreparedStatement force a recompilation of the statement anyways, so considerations of a cached Statement reuse is not a benefit for performance tuning here?? 
Please reply.
</html>

Sorry for the formatting messup:
Q1: Increases Network calls??
Where there is a table with large number columns , does a bind call to each column from a middle tier makes a network round-trip to the database?? Or does the Oracle JDBC driver cache binds to all columns and send them over in one call??
Q2: Is the Statement faster then PreparedStatement for such large tables??
If the answer to Q1 is yes, Will the recompilation needed by a Statement with values concatenated as literals in the SQL text beat the combined speed of such numerous bind calls ??
Q3. Recompilation of Statement Vs Oracle SQL Cache
Are Q1 and Q2 moot ?? I.e If different values are concatenated to the Statement SQL text, does that in itself force Oracle to treat it as a different SQL or Has Oracle become advanced enough to treat literals as bind values and hence reuse a Statement cursor with diff. literal values executed in the past in the Cache??
Q4. If Q3 is NO: PreparedStatement VS cached Cursor reuse
If the anwser to Q3 is NO - i.e Statment is inefficient, then can we conclude that PreparedStatement offers double advantages. i.e. within the same session multiple executions are faster , since we only rebind. Also if the connection is closed and PreparedStatement is also closed , but the if same PreparedStatement is reopened in a new Session within the near future, Oracle will reuse the Cached statement, since the SQL text with place-holders('?' marks) definitely matches it. Whereas a Statememt with new literal values concatenated in is a new Statement for every new execution??
Q5. Is Q4 moot: PreparedStatement Vs mutiple Sessions
Does closing and reopening a PreparedStatement force a recompilation of the statement anyways, so considerations of a cached Statement reuse is not a benefit for performance tuning here??
Please reply.

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All,
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Red Hat Enterprise Linux x86-64 architecture v4.5 64 bit
Oracle Application Server 10.1.2.0.2 ( with patch 10.1.2.3 )
Oracle Developer Suite (Oracle Forms and Reports) V10.1.2.0.2 ( with patch 10.1.2.3 )
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ASO MDX member formula and performance

Hi,
I am doing some testing about MDX formulas and performance. I found a performance issue but I can not understand why is taking so long time a report.
The situation is:
I create a report or a MDX query with:
6 dimensions in row and 1 dimension in column
rows:
Period - Filtered using a member
Year - Filtered using a member
Relationship Manager - Filtered using a member
Report Type - Filtered using a member
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Global Relationship Manager - 10400 members level 0
Column:
Account dimension, only a member
The member selected for Report Type (RM.Local) has a formula
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My first test was
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Do you consider this time is reasonable when I am using this formula?
The mdx report is:
With
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set [_Global Relationship Manager4] as '[Global Relationship Manager].Generations(4).members' = level 0 members
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set [_Relationship Manager4] as '{[Relationship Manager].[Dummy1)]}'
set [_Report Type0] as '{[Report Type].[RM.Local]}'
set [_Year2] as '{[Year].[FY-2013]}'
select
{ [Account].[Expenses]
} on columns,
NON EMPTY {crossjoin({[_Local Relationship Manager3]},crossjoin({[_Global Relationship Manager4]},crossjoin({[_Period0]},crossjoin({[_Relationship Manager4]},crossjoin({[_Report Type0]},{[_Year2]})))))} properties MEMBER_NAME, GEN_NUMBER, [Global Relationship Manager].[MEMBER_UNIQUE_NAME], [Global Relationship Manager].[Memnor], [Local Relationship Manager].[MEMBER_UNIQUE_NAME], [Local Relationship Manager].[Memnor], [Relationship Manager].[MEMBER_UNIQUE_NAME], [Relationship Manager].[Memnor], [Period].[Default], [Report Type].[Default], [Year].[MEMBER_UNIQUE_NAME], [Year].[Memnor] on rows
from [DICISRM.DICISRM]

Ok Try this one
But here you have to change the MDX formula every month.
Year
--FY2009
--FY2010
--FY2011
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Period
--TotalYear
----Qtr1
-------Jan
-------Feb
-------Mar
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case when contains([Year].CurrentMember,MemberRange([FY2009],[FY2010])) and contains([Period].CurrentMember,MemberRange([Jan],[Feb]))
Then
B
else
C
end
For the Next month you just have to make a change in the MemberRange I.e.,(Replace Feb with Mar)
*case when contains([Year].CurrentMember,MemberRange([FY2009],[FY2010])) and contains([Period].CurrentMember,MemberRange([Jan],[Mar]))*
Then
B
else
C
end
I tested it and Its working fine.
I think this will solve you're problem but there might be a more elegant solution out there.
Regards,
RSG

Invoice Number and Performa invoice number

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How can I optimize my hard disk drive usage and performance in Windows 8 or Windows 7?

QuestionHow can I optimize my hard disk drive usage and performance in Windows 8 or Windows 7?
AnswerThere are a few simple steps you can take to ensure your hard disk drive is used optimally.
Use Toshiba HDD Protection
Many Toshiba laptops come with a program called Toshiba HDD Protection pre-installed. This program helps to protect your hard disk drive from being damaged due to falls or impacts. By default, it should already be enabled. You might be tempted to lower the detection levels in this application, but doing so could cause your hard disk drive to be damaged. Remember that while the application can reduce the chance of damage, you should still avoid allowing the laptop to fall or suffer rapid impacts.
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Remove items from startup
Some applications run automatically when Windows starts. This can add additional functionality, but it also decreases the performance of your computer. Sometimes you might want to disable certain programs from starting automatically.
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In Windows 7, type "msconfig" in the Start Menu's search field and press ENTER. Uncheck the boxes next to applications you'd like to disable from starting automatically.
You should be sure of the purpose of an application before disabling it from starting automatically. Some applications might be important. If in doubt, you might consider searching on the Web to discover more information about a program. Remember that if you find that you disabled something vital, you can always re-enable it.
For more information, please see the following video:

QuestionHow can I optimize my hard disk drive usage and performance in Windows 8 or Windows 7?
AnswerThere are a few simple steps you can take to ensure your hard disk drive is used optimally.
Use Toshiba HDD Protection
Many Toshiba laptops come with a program called Toshiba HDD Protection pre-installed. This program helps to protect your hard disk drive from being damaged due to falls or impacts. By default, it should already be enabled. You might be tempted to lower the detection levels in this application, but doing so could cause your hard disk drive to be damaged. Remember that while the application can reduce the chance of damage, you should still avoid allowing the laptop to fall or suffer rapid impacts.
For more information on this utility, see the following article:
TOSHIBA HDD Protection
Optimize the drive
Windows 8 and Windows 7 optimize hard disk drives automatically through a process called defragmentation. Unless you've disabled this, you don't need to do anything. If you have disabled this and want to run the process, you can still do so.
In Windows 8, search for "Defrag" at the Windows Start screen and select "Defragment and optimize your drives."
In Windows 7, search for "Defrag" in the Start Menu's search field and select "Disk defragmenter."
You can use this tool to optimize your hard disk drives, allowing Windows to find needed files faster.
Remove items from startup
Some applications run automatically when Windows starts. This can add additional functionality, but it also decreases the performance of your computer. Sometimes you might want to disable certain programs from starting automatically.
In Windows 8, search for "Task Manager" at the Start screen. Select the "Startup" tab. Select an application you'd like to disable from starting automatically and then click the "Disable" button in the lower-right.
In Windows 7, type "msconfig" in the Start Menu's search field and press ENTER. Uncheck the boxes next to applications you'd like to disable from starting automatically.
You should be sure of the purpose of an application before disabling it from starting automatically. Some applications might be important. If in doubt, you might consider searching on the Web to discover more information about a program. Remember that if you find that you disabled something vital, you can always re-enable it.
For more information, please see the following video:

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Reduce the operating temperature and increase battery life
The battery in your notebook PC is designed to provide the necessary amount of energy for the processor while maintaining HP high safety standards. As a result, the battery may not charge or may stop providing power to the notebook when the battery temperature exceeds the specified, design safety level.
If the battery life appears shorter than normal, the battery stops charging before it is 99%-100% full and the battery appears warmer than usual, the battery has most likely reached its designed "no charge" safety state. The battery will no longer charge until the temperature condition is corrected.
Try one of the following methods to correct the battery temperature:
When charging the battery, do not use applications that require large amounts of system resources such as graphic or memory intensive applications, heavy and extended hard drive usage.
Turn off your notebook and remove the battery to allow it to return to a safe operating temperature.
Make sure the notebook PC is operating on a hard surface. Using the Notebook PC on a bed or sofa may block the vents causing the notebook PC to heat up and shut down.
By taking these steps, the battery will return to its normal operating temperature range and continue to charge and discharge as designed.
Calibrating the battery while PC not in use
Recalibrating the battery requires a cycle of a complete charge and a complete discharge. To recalibrate the battery while using the PC is not is use complete the following steps.
The recalibration may take 1-5 hours depending on the age of the battery and the configuration of the notebook PC you own. The PC should not be used while you perform the following steps. Completing all the following steps will also calibrate the battery so that the power meter readings are accurate.
Shut down the notebook PC
Connect the AC Adapter to the notebook PC and to an electrical socket.
Charge the Notebook PC until the Battery Charge light is Green. This indicates the battery is completely charged.
Press and release the Power Button to start the computer.
Press the F8 key several times when the HP Logo displays.
When the Windows Advanced Startup Menu displays, select the Startup in Safe Mode option.
Remove the AC power adapter from the notebook PC.
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Do's
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Condition a new battery by using it until it is fully discharged, and then re-charge it fully. Doing this once a month will help to accurately calibrate your battery.
Always ensure the battery is recharged as soon as possible after it becomes fully discharged. A battery will be permanently damaged if left for an extended length of time in a fully discharged state.
Remember that a Lithium-Ion battery will slowly deteriorate; a new battery will always perform better than one that is 6-months old.
Remember that the battery half-life is rated for a certain total number of charge/discharge cycles (see your User Manual or Quick Start Guide for the rating). For example, a battery that is rated for 3 hours and 500 charge/discharge cycles, will still be considered as within specification, even if it only lasts for 1 hour 45 minutes after 500 charge/discharge cycles.
Heat is the worst enemy of a battery. Allow plenty of air to circulate around the Notebook/Tablet PC, so that the battery is kept as cool as possible when charging and also when in use. If provided, use the integrated 'legs' under the Notebook to raise the notebook and improve air circulation.
Remove the battery if storing for several months (the battery should be at approximately 50% charge or higher).
If you use a NoteBus or if charging your Notebooks or Tablet PCs in a confined space, allow for adequate ventilation in order to keep the batteries as cool as possible.
Don'ts
Do Not - Expose the battery to excessive heat or cold (i.e. outside the range of 10-35 degrees Centigrade ambient).
Do Not - Store the battery in a fully charged state (store batteries with about 50% charge).
Do Not - Allow a nearly flat battery to be unused for more than a month or so. The battery will slowly discharge until it becomes fully discharged and this will permanently damage the battery cells.
Do Not - Charge your Notebook/Tablet PC inside a carry case - the battery may overheat.
Do Not - Charge your Notebook/Tablet PC when stacked on top of each other - the battery may overheat.
Remember: Your battery is slowly degrading all the time, even if it is not used. Keeping your battery as cool as possible will slow down this degradation considerably.
For more information please visit the following links:
How to Improve the Performance of the Battery
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01297640&cc=us&lc=en&dlc=en
10 Tips to make your Laptop Battery last longer
http://labnol.blogspot.com/2006/03/10-tips-to-make-your-laptop-battery.html
Disclaimer: By clicking on the link above, you will be leaving HP.com to visit a web site that is not maintained by HP and where the HP privacy policy does not apply. This link is provided to you for convenience and does not serve as an endorsement by HP of any information or contacts that you may find on this non-HP site.
||-Although I am working on behalf of HP, I am speaking for myself and not for HP.-||
//Click on Kudos if my reply was helpful and answered your question//
||-If my answer solved the problem please mark the topic as the accepted solution-||

I hope the above article will help you guys..
||-Although I am working on behalf of HP, I am speaking for myself and not for HP.-||
//Click on Kudos if my reply was helpful and answered your question//
||-If my answer solved the problem please mark the topic as the accepted solution-||

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amit m.

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Hello Group Members,
I am facing a cache and performance issue for the first time, when I try to open a SSAS cube connection using Excel (using Data tab -> From Other Sources --> From Analysis Services) after daily cube refresh. In end users
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Thanks Richard and Charlie,
We have implemented the solution/suggestions in our DEV environment and we have seen a definite improvement. We are waiting this to be deployed in UAT environment to note down the actual performance and time improvement while browsing the cube for the
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Guys,
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<Batch xmlns="http://schemas.microsoft.com/analysisservices/2003/engine">
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<Process xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ddl2="http://schemas.microsoft.com/analysisservices/2003/engine/2" xmlns:ddl2_2="http://schemas.microsoft.com/analysisservices/2003/engine/2/2" xmlns:ddl100_100="http://schemas.microsoft.com/analysisservices/2008/engine/100/100" xmlns:ddl200="http://schemas.microsoft.com/analysisservices/2010/engine/200" xmlns:ddl200_200="http://schemas.microsoft.com/analysisservices/2010/engine/200/200">
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Best Regards, Arka Mitra.

Business Intelligence and performance point problem

Hi Everyone,
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doesn't exist.
A search around the web for answers doesn't seems to solve my problem as it suggests that the problem is associate with many things which I'm not clear about. Please could someone who is good at this at least tell me the critical things to check and the
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Thanks,
Dominic

Hi Dominic,
According to your error " I either don't have permissions or the data source doesn't exist", it should be related to the unattended account permission.
Once the unattended service account has been configured, you must grant that account access to your data sources:
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For SQL Server Analysis Services data, the account must have read access to the cube or an appropriate portion of the cube, depending on your needs.
For Excel Services data, the account must have access to the Excel workbook in a SharePoint document library.
For data in a SharePoint list, the account must have read access to the list.
Reference:
https://technet.microsoft.com/en-us/library/ee836145.aspx
Also you can have a look at the blog:
http://www.chrismcnulty.net/blog/Lists/Posts/Post.aspx?ID=74
https://yossidahan.wordpress.com/2012/08/14/cant-get-ssas-databases-to-appear-in-performance-point-dashboard-designer-check-you-adomd-net-version/
Best Regards,
Eric
TechNet Community Support
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact
[email protected]

I need to sort very large Excel files and perform other operations. How much faster would this be on a MacPro rather than my MacBook Pro i7, 2.6, 15R?

I am a scientist and run my own business. Money is tight. I have some very large Excel files (~200MB) that I need to sort and perform logic operations on. I currently use a MacBookPro (i7 core, 2.6GHz, 16GB 1600 MHz DDR3) and I am thinking about buying a multicore MacPro. Some of the operations take half an hour to perform. How much faster should I expect these operations to happen on a new MacPro? Is there a significant speed advantage in the 6 core vs 4 core? Practically speaking, what are the features I should look at and what is the speed bump I should expect if I go to 32GB or 64GB? Related to this I am using a 32 bit version of Excel. Is there a 64 bit spreadsheet that I can us on a Mac that has no limit on column and row size?

Grant Bennet-Alder,
It’s funny you mentioned using Activity Monitor. I use it all the time to watch when a computation cycle is finished so I can avoid a crash. I keep it up in the corner of my screen while I respond to email or work on a grant. Typically the %CPU will hang at ~100% (sometimes even saying the application is not responding in red) but will almost always complete the cycle if I let it go for 30 minutes or so. As long as I leave Excel alone while it is working it will not crash. I had not thought of using the Activity Monitor as you suggested. Also I did not realize using a 32 bit application limited me to 4GB of memory for each application. That is clearly a problem for this kind of work. Is there any work around for this? It seems like a 64-bit spreadsheet would help. I would love to use the new 64 bit Numbers but the current version limits the number of rows and columns. I tried it out on my MacBook Pro but my files don’t fit.
The hatter,
This may be the solution for me. I’m OK with assembling the unit you described (I’ve even etched my own boards) but feel very bad about needing to step away from Apple products. When I started computing this was the sort of thing computers were designed to do. Is there any native 64-bit spreadsheet that allows unlimited rows/columns, which will run on an Apple? Excel is only 64-bit on their machines.
Many thanks to both of you for your quick and on point answers!

PreparedStatement and performance..

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