Do generics have a negative impact on performance

Is there any performance hit if we use generics. I am getting more confused because JDK 1.6 is not supporting generics, and I am getting a feeling that they are removed because there are some problems with generics

oh then that means that I have to remove the al the
generic part from my code if I want to use 1.6 . Is
there ne solution to this???Oh come on!
First of all three people told you specifically that this was nonsense. Why are you such a panic monger that you would believe one person and not believe three others? Really if you are so sure you are right then don't bother to ask questions and waste our time.
Further because apparently it is less then clear to you paulcw is JOKING. Do you really think that Sun removed support for the letter Q from Java?
Use your brain please. Just a little bit.

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Hi,
I am using JDEV 11.1.2.1.0
I am getting the following error :-
<RegionRenderer> <encodeAll> The region component with id: pt1:r1 has detected a page fragment with multiple root components. Fragments with more than one root component may not display correctly in a region and may have a negative impact on performance. It is recommended that you restructure the page fragment to have a single root component.
Piece of code is for region is:-
   <f:facet name="second">
                                            <af:panelStretchLayout id="pa1"
                                                                   binding="#{backingBeanScope.Assign.pa1}">
                                                <f:facet name="center">
                                                    <af:region value="#{bindings.tfdAssignGraph1.regionModel}" id="r1"
                                                               binding="#{backingBeanScope.Assign.r1}"/>
                                                </f:facet>
                                            </af:panelStretchLayout>
                                        </f:facet>
How do I resolve it ?
Thanks,

Hi,
I see at least 3 errors
1. <RegionRenderer> <encodeAll> The region component with id: pt1:r1 has detected a page fragment with multiple root components.
the page fragment should only have a single component under the jsp:root tag. If you see more than one, wrap them in e.g. an af:panelGroupLayout or af:group component
2. SAPFunction.jspx/.xml" has an invalid character ".".
check the document (you can open it in JDeveloper if the customization was a seeded one. Seems that editing this file smething has gone bad
3. The expression "#{bindings..regionModel}" (that was specified for the RegionModel "value" attribute of the region component with id "pePanel") evaluated to null.
"pageeditorpanel" does seem to be missing in the PageDef file of the page holding the region
Frank

10.4.7 has a negative impact on performance

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After installing the latest update everything has been slower than on 10.4.6 - it boots slower and when scrolling in Safari it feels sluggish. Is it just me?
Regards

If the "usual" maintenance procedures include running something like Cocktail's Pilot feature, then you will see an initial slowdown in both startup time and performance until the various caches have a chance to rebuild themselves. It may be that the "maintenance" is the cause of the problem rather than the update.

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Hello,
We have a strange situation with our COPA CE4XXXX table. When database statistics are generated (DB20) for this table, we immediately notice a very significant performance drop when selecting from this table. In orer to correct this, if we adjust/rebuild the index of the table using the database utility tool, it seems to resolve the issue. Either way, the indexes that Oracle chooses for the query we are monitoring does not change, but performance is decreased after new statistics are generated.
The Oracle version is 9.2.0.8.0, and the statistics were generated with method 'E' sample 'P25'.
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Hello Daniel,
i am not quite sure about Oracle 9i, DB20 and the index rebuild.
Please check the options which are given to the REBUILD index command by SAP.
http://download.oracle.com/docs/cd/B10501_01/server.920/a96540/statements_18a.htm#SQLRF00805
> COMPUTE STATISTICS Clause
> Specify COMPUTE STATISTICS if you want to collect statistics at relatively little cost during the rebuilding of an index.
>
> If you create an index using another index (instead of a table), the original index might not provide adequate statistical information. Therefore, Oracle generally uses the base table to compute the statistics, which will improve the statistics but may negatively affect performance.
I am only sure about Oracle 10g (because there is always a compute).. maybe your gathered statistics with method 'E' sample 'P25' are not good enough.. or this is maybe a bug.
But without the execution plans, statistic data and the exact commands that are generated in the background.. it is really hard to say.
Regards
Stefan

What is the recommended 'file handling cache' size for LRCC(6) on MAC OS? Is there an upper limit at which it has a negative impact on performance?

When using the brush tool at full screen (Fill mode not 1:1) for extended period (10-15 minutes) I begin to experience a lag in screen replenish and often get the Mac beachball. The entire operation of the Dev/Brush tool slows and gets unmanageable. I usually close LR and restart but the problem returns. I turned off the GPU support as that exacerbated the problem.
Image is 21MB Canon Raw file.
1:1 and Smart Preview was built on Import.
Using brush tool at low flow (40%) and density (100%) so there are a lot of 'strokes' applied in B/D of areas of image
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Running late 2012 Mac Mini (Quad Processors/I7-2.3ghz/16GBRAM) and with Dell U2415
Original images located on W/D 4TB external drive; LR Catalog on Mac 2TBHD-256GB SSD/Fusion drive
Graphics card is Intel HD 4000/OSX
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http://lifehacker.com/5426041/understanding-the-windows-pagefile-and-why-you-shouldnt-disa ble-it
Keep in mind Video/Animation applications use more ram now than almost any other type and there are far more memory hungry services running in the background as well. Consider the normal recommendations are for standard applications. HD material changed far more than just the need for 64Bit memory addressing.
Eric
ADK

Can Virtual Machin system make negative impact to the database performance?

Can Virtual Machin system make negative impact to the database performance?
I want to make a virtual machine system in my server and then install Oracle 10g database on the virtual machine system. But I am not sure if Virtual Machin system can make any negative impact to the database performance.
Thank you

The virtual machine software vendor must have certified and provided some performance figures like running Oracle on our VM would have a performance hit of n%. VMWare has such a figure published (8% if I recall correctly).
Besides, the load on physical server, apart from the virtual machine running, would also have the impact on performance.
Other factors would be
1. how quickly the host OS can cater to the guest OS with the RAM requirements (it would be good if you could pre-allocate RAM to VM)
2. with the assumption that you will be running an OS within OS, files on host OS forming the VM, should be pre-allocated in terms of space, avoiding runtime extentions.

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Hello. I have navigator installed in our test environment and it seems pretty straight forward. You can turn it on or off through the web client. It maps alot of the heavy hitter applications by default. I have a couple questions before I put it into production though.
1. Our production environment is setup differently than my lab. There are 3 datacenters in prod and one in my lab. Does Navigator see all VMs in all datacenters within one virtual center?
2. Are there any negative security or performance impacts by enabling navigator?
Thanks for your input!

Hello CHJamey,
Here are the answers to your questions:
1. Indeed. The VIN will detect all traffic in the VC it's installed within. You'll see all 3 datacenters and the lab.
2. There aren't any negative security or performance impacts. VIN uses a secure channel to detect the services and traffic occurring in your VC, and you'll not feel an impact in your production environment.
Hope those answers help!
-JohnstonM.

CIF variants exist in system for last 4 years - Any negative impact ??

Hi Experts,
I observed that we have variants of CCR existing in the system for last 4 years!!! Will it make any negative impact on the system in terms of performance ?
If yes then do you suggest to delete unnecessary Logs?
Thanks.
Regards,
Chandan

Hi,
We have not observred measurement of performance deterioration due to number of variants over a period.
Variants are stored in VARID database table.
Please check how many entries are there in this table for the CIF related programs.
You may check with Basis team , if the table size is okay and also find out the rate of increase.
This can be a good housekeeping activtiy to delete obsolete variants older than say a few years.
Regards
Datta

Multi DP in WAD and its impact on Performance ?

Hello Experts,
I am working on WAD reports with multiple Data Providers,
I.e. Web Template with DP1, DP2, DP3, DP4 --- Query 1
                                   DP5, DP6, DP7, DP8 --- Query 2
      Purpose - i have used Tab Strip Item with eight Tabs, each tab belongs to respective DP.
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So, Does multi Data Provider with Multiple Queries have impact on Performance of the web report ? and If it does, then possible ways to improve performance ? Any advice/experience on this..
Many many thanks in advance.. Please help... Thanks
Regards,
Sunil Patel

Hello Priya,
thanks for the reply !!
The main purpose for the Tabs is to fulfill CRAZY CLIENT REQUIREMENT, nothing else ... Same thing can be done by just drag & drop but ...
What each tab does is, when clicked commands changes/replaces the Characteristics in the Row.
for ex. Origional query has Product in the raw. Now if user want to see different perpective, he needs to replace 'Product' wiht 'Business Area' or ' Customer' . THis can be done either by drag and drop or Commands. And here i have used commands.
@ performance - i am in development and still i haven't seen any perfomance issues becasue of this multi DP. But just want to make sure it does same thing in Production aswell..
Hope this make sense !!
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Any negative impact on Customer system after switching on Delta...

Hi
Could u pls let me know that:
1) In general client switch on their Delta System for Data Extraction or not?
2) If they switch on Delta, Is their any negative impact on customer system?
Thanks...

Hi Harpal,
First of all if you switch on delta there is no negative impact. The only thing is you need to follow some precautions before you switch on delta.
1) It is always a good idea to have DSO before you load data to cube in case of delta.
2) When you are loading delta for first time you need to be careful with delta initialization. Because whatever initialization you do that will remain constant for your future delta.
And the reason behind the delta mechanism is as your system becomes old then it becomes very difficult to extract Full or All data on daily basis. The extraction time will also increase and there are more chances of load failures.
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Durgesh.

Negative Impact of Auto Excise Invoice (J1IIN) creating

Dear Experts,
We are going to start auto excise Invoice creating. (after creating billing document, excise invoice will be creating automatically)
Any negative impact if we have start this scenario.
Regards
BK GAIKWAD

Hi GAIKWAD,
Asper your requirement i dont think so there will be a problem, (Except for regular sales)
but carefurll when you are creating the excise invoice (J1IIN) for the exports and deemed exports, since those two sales processes system will expect the utilization option then only can able to go for the next process like ARE1, ARE3.
check it out, whether you have both exports and deemed exp scenarios
or else plz let me know(if i am wrong) if you hav any other way for both exports & deemed exp. (Automatic process)
Thanks & Regards
Rajasekhar R

Negative impact of the program- RSDMD_CHECKPRG_ALL

hi all,
we are facing an issue with master data inconsistency . can anybody let me know if there is any negative impact of the program
RSDMD_CHECKPRG_ALL if we run it in repair mode for a single characteristic . We donot have aggregates.
Regards,
dola

Hi Dola,
There will be no negative impact of the program RSDMD_CHECKPRG_ALL if you run it in repair mode for a single characteristic Even if you do not have aggregates it will not impact...Most of options provided in RSDMD_CHECKPRG_ALL are the ones in RSRV checks. At a time you can check only for one characteristic.
Hope it clarifies your doubt..
Thanks,
Amit Kr.

When I try to sync my IPOD (3rd gen) on ITunes, I receive the following error message - you don't have enough access permissions to perform this operation

When I try to sync my IPOD (3rd gen) on ITunes, I receive the following error message - you don't have enough access permissions to perform this operation..can anyone assist?

See:
iPhone - not enough access privileges: Apple Support Communities

Error in Powerpoint 2011: "You don't have the permissions necessary to perform the operation"

We have a user with a new iMac running 10.7.2 that is having some strange problems with Powerpoint 2012 and who knows how many other programs. The issue is whenever these programs try to write to the user's personal network folder, which we keep on a DFS share. The error message only pops up when the user tries to save over something that already has that file name on the share. So she is always able to make file.pptx, but any subsequent "save" commands result in this error message: "You don't have the permissions necessary to perform the operation." Then, all she can do is save the file as newfile.pptx.
This doesn't happen in Word or any other files in the office suite. I've tried this both when connecting to the DFS share, and when using SMB to connect directly to the folder on the server, with no change in results. I've not tried removing/reinstalling the Office suite, because it's only powerpoint. I believe it must be something to do with her account's permissions in Active Directory, but when she uses this domain account on a Windows computer, there are no problems at all, of course.
There's a mere 3 google hits on that bolded error message, leaving me with very little to go on. Has anyone run into this before?

Hey,
I have Mac users using Office 2011 saving to CIFS shares having the exact same problem.
Like heiseheisepointed pointed out only Power Point seems to be affected. Word, Excel etc seem to work fine.
I have checked and reapplied the permissions to the share and it is not that, I believe it is something faulty in PowerPoint itself.
I also tried saving the files as ppt rather than pptx but you still get a permissions based error message.
Just wondering is eitherJeff or hbonath have any sucess in getting a fix for this?
Cheers
Genits

Can we have two admin instances while performing Dynamic clustering?

Can we have two admin instances while performing Dynamic clustering?

Just referring you to this thread.
https://social.technet.microsoft.com/Forums/windowsserver/en-US/91f6434f-8a4e-4e53-b185-2f3a493aa134/issue-with-office-365-integration-module?forum=winserveressentials
Robert Pearman SBS MVP
itauthority.co.uk |
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Do generics have a negative impact on performance

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