What are limits of PreparedStatements?

Hello All,
I am trying to understand the limits on use of PreparedStatements with connections and connection pools. Can someone try to answer these questions for me, based on a typical DB such as Oracle?
* What resources are consumed (on the DB) for each PreparedStatement?
* What is the practical limit on number PreparedStatements per connection?
* If using multiple connection pools, is it normal to have say 200 identical PreparedStatements created on each pool, so that no matter which pool is used, the same PreparedStatement is available for use on each connection in the pool?
* Is this approach wrong, and if so, what part?
Thanks!

* What resources are consumed (on the DB) for each PreparedStatement?
I'm not sure, but the answer would always be specific to the driver and database platform.
* What is the practical limit on number PreparedStatements per connection?
I haven't come across any drivers that impose any limit, but I suppose they could.
* If using multiple connection pools ...
As per your prior question, PreparedStatements are associated with Connections and not pools. However, if your driver complies with the JDBC 3.0 spec, you might want to research its Statement pooling features. But, you do mention "200 identical PreparedStatements". This might be a bit excessive if the SQL statements you're preparing are dynamic (containing one or more '?' as value place holders) rather than static. If they are static, you might want to consider using dynamic ones instead. Post some examples of your SQL for more feedback.

Similar Messages

Have old G4 want to upgrade but unsure what are limitations

hi,
i bought an old powerPC G4 533MHZ (CPU 11.3)
(only has 768 sdram currently)
videocard is nVidea 32MB AGP card.
was hoping to be able to upgrade this machine a lot and do quality video work on it. A friend of mine claims that it has terrible limitations and that even if i were to swap out the hard drive or try to make it a dual core, it wouldn't work. Bus speed is supposed to be cost prohibitive as well
how much of this is true? how much could i pimp this machine out?
thank you for any help you may be able to provide

Well, my 2003 MDD machine has yet to really overheat. In fact, it never did! It all started back in 2007 around the summer time. My machine at that time was a 733mhz digital audio G4 and I was looking at a more advanced G4 system. Originally, I had my sights on the lowest of the totumpole G5, but unable to afford it at that time.
So, I looked on craigslist under G4's and low and behold. I found this G4 MDD for $435! It has a dual 1.25 processor with 2MB L3 Cache per processor and large hard drive space.. a lot more than the digital audio has.
I jumped at the deal. The good news is that I have the modified power supply inside and my machine is quiet under OS X, though under OS 9.2.2, it can be a little noisy, but not too bad.
I use my machine for everyday tasks and have no need for windows applications, at least for now. I do plan on getting a intel mac mini, since I would never depart away from my beloved MDD!
Anyway, the processor upgrades for MDD machines are dual 1.6 and dual 1.8, but both these from Sonnet lack L3 Cache, which is why I am not going to get any of those because its not cost effective. I plan on getting sata hard drives to complete my upgrades for this machine. Already got a GEFORCE 7800 GS video card with 256MB memory + core image capability. I plan on getting Leopard, though right now I am satisfied with Tiger as all my software runs under Tiger better than Leopard.
My machine has never had any issues with reliability. Its a strong BEAST. The Digital Audio G4 has been passed down to my 9 year old so that he can learn on the computer. That processor is not bad either for basics, and what he is doing in grade school is basics.
I also have a sawtooth mac, though was going to use this as a server using Mac OS X Server 1.2v3.

What are limits of pixel dimensions of intro media?

Is Intro Media constrained to the 768 x 1024 px full spread standard - (this is assuming you are creating in landscape mode)? Or can you adjust the dimensions to something smaller. I'm trying to design a moving collage and it would help if I knew if Intro Media requires the full 2 page spread or not.

* What resources are consumed (on the DB) for each PreparedStatement?
I'm not sure, but the answer would always be specific to the driver and database platform.
* What is the practical limit on number PreparedStatements per connection?
I haven't come across any drivers that impose any limit, but I suppose they could.
* If using multiple connection pools ...
As per your prior question, PreparedStatements are associated with Connections and not pools. However, if your driver complies with the JDBC 3.0 spec, you might want to research its Statement pooling features. But, you do mention "200 identical PreparedStatements". This might be a bit excessive if the SQL statements you're preparing are dynamic (containing one or more '?' as value place holders) rather than static. If they are static, you might want to consider using dynamic ones instead. Post some examples of your SQL for more feedback.

SSAS Tabular in DirectQuery - What are the workarounds for formula limitations?

Hello,
I need to create an SSAS Tabular model against the database of a live, real-time, line of business transactional system (i.e. a CRM).
The business requirement behind it is that we need to create some complex reports against live data, and our DW is only updated daily.
This live model will however be partitioned with a time-variance limitation (e.g. only records which are XX old can be returned).
Now here is the challenge. Since I am querying live data, then I believe the model must be configured in DirectQuery model. Am I right?
The issue is that DirectQuery mode is full of formula limitations. So my concern is, if I need a calculated column or measure that I cannot make it work due to DirectQuery limitations, then what are the alternatives?
Remember that the data source is from a live system, so it is not like I can create columns and measures in the underlying relational database.
Please advise.
Regards,
P.

Hi pmdci,
According to your description, you want to use some functions in calculated measure which are not supported in DirectQuery mode. Right?
In Analysis Services Tabular, since DirectQuery has the real time access and scalability, this comes with a price of restrictions on a number of DAX functions and missing Calculated Column feature. Generally the workaround for these scenarios
is replacing those functions with other functions which are supported in DirectQuery mode, or create columns in the data source. However, as you said, your environment is not possible to create columns in the database. And a lot of those limited
function are not replaceable, like time intelligence functions. So actually, there's no really effective workaround currently.
For you requirement, I suggest you submit Microsoft a feature request
at https://connect.microsoft.com/SQLServer
so that we can try to modify and expand the product features based on your needs.
Best Regards,
Simon Hou
TechNet Community Support

What are the limitation of the 4 Port Gigabit ethernet Security Service Module (4GE SSM)?

I was wondering if anyone can help me out. I am trying to create a redundancy topology which require several connections to an ASA 5510. I am looking at extending the connections to my ASA 5510 appliance with the four port gig ethernet security module (4GE SSM). I am trying to find out what the limitations are on this particular module.
I have heard that there might be limitations to the 4GE SSM. Such as the interfaces on this module might process data separately from the ASA 5510 appliance. My question is does the ASA four port gig ethernet security module (4GE SSM) interfaces act as a extension of the ASA 5510 appliance or does it process and filter data separate from the ASA 5510 appliance ?
My concerns are that the 4GE SSM does not utilize all the security features of the ASA 5510 appliance, and that it just separates traffic into security zones. I interpret that to mean that each interface can be placed in a separate security level in which case has a separate security algorithm and uses the security level to force security policies. Nothing more.
My second question if relevant would be what are the limitations?
Thank you for your help on this topic.
mike

The 4GE SSM just gives you the four additional ports. It doesn't increase the processing capacity of the 5510 (a relatively low end box whose replacement - the 5515X - has been out since this past spring). It works off the same configuration script and CPU as all the built-in ports.
The only limitation I can think of off the top of my head is that members of an Etherchannel cannot span the SSM and the built-in ports.

What are Azure limitations for Websockets in Cloud Services (web and worker role)?

A WebSocket Server should be built on Azure platform with OnPrem connections and have questions regarding limitations for Websockets in Azure Cloud Services - web and worker roles.
Websockets can be configured for Web Sites and limitations are understood, but Azure Websites is not an option.
Nevertheless it is planned to run a web service (without UI - no web site) as a Cloud service which has secure websocket (WSS) connections to OnPrem machines. Websocket protocol is enabled for IIS8 on Cloud services web and worker roles. Azure Service Bus Relay
is not an option.
Questions:
1) Are Websockets supported for Azure Cloud services web and worker roles? we assume yes
2) What are potential limitations from Azure side to support concurrent Websocket connections? We are aware that CPU, memory etc are limitations, but are there additional limitations from MS Azure side?

Hi,
As I know, azure cloud service web and worker role support Websockets, users can connect to the role via the special endpoint, if we use Azure cloud service, I think we can monitor the metrics such as CPU, memory, etc... and scale our cloud service via these
metrics to keep the websockets working, refer to
http://azure.microsoft.com/en-us/documentation/articles/cloud-services-how-to-scale/ for more information about how to scale a cloud service.
Regards

What are the limitations in terms of data size or performance while using csv or text file as datasource?

Also what are the limitations in terms of data size or performance related issues while using csv or text file?Is it the best practice to use csv , text file to use as a datasource to improve performance?Please Advice....  

Hi,Create Same Data Input for CSV and Text File ,Create 2 different reports one for CSV and One for Text ,run them one you have done that.Go to Report Menu and Select Performance Information .Use the Data in that to check which one is good datasource to improve performanceCheersRahul

What are the limitations of using labview 8.5.1 developers suite verses a real-time module in field point applications?

What are the limitations of using labview 8.5.1 developers suite verses a real-time module in field point applications? Can an exe. be loaded onto a field point controller or does the controlling program have to reside on a PC for example?

centerbolt is correct, you can't load a .exe or even run a program on the fieldPoint controller unless you have the Real Time module. However, that does not mean you can't use your FieldPoint bank without the Real Time module.
From LabVIEW for windows you can make calls to the fieldpoint IO using the fieldpoint read/write functions.
This program runs on the PC not the FieldPoint controller. If you loose network connection to the fieldpoint, your program will loose connection to the IO. For many data logging applications this type of arrangement can work just fine. However, if this is the only type of application you are ever going to run, then you may as well not buy the Real Time controller for your fieldpoint but the network controller only.
If your application requires more reliability, and/or greater determinism than can be achieved by running a program on windows, then you should use the LabVIEW Real Time module and develop a program that can run down on the FieldPoint controller independent of windows.
Message Edited by StevenA on 07-22-2008 04:14 PM
SteveA
CLD
FPGA/RT/PDA/TP/DSC
Attachments:
fp pallet.PNG ‏6 KB

What are the limitations of the free 30-day InDesign trial?

What are the limitations of the free 30-day InDesign trial?

There are no limitations for 30 days, it will work exactly as if you have a subscription. But if you don't get a subscription, after 30 days, you will no longer be able to launch the program.

What are the limitations of the software during the 30 day trial?

what are the limitations of the software during the 30 day trial?

Trials are fully functional.
The only limitation is that they will stop working 30 days after first launch.
You remove the time limit by entering a valid serial number which you get when you purchase the software. Or by subscribing to a Cloud membership plan.

What are the limitations of the EEWB?

Hi,
I am looking for what all limitations we have for EEWB.
Thanks.
Dilip

Beginner this is from my collections..
I M P O R T A N T !!! ***********************************************
N E V E R try to delete manually any objects belonging to *
enhancements created via EEWB. Manual deletion can cause severe *
problems and data mismatches in your system. *
Please be advised that all subsequent problems due to manual *
deletion of EEWB objects are treated as chargeable consulting issue *
and are NOT processed as a support issue. *
W H A T T O D O : *
Send a customer message to SAP, using the following component: *
If the enhancement was created in a system that contains the *
software component MDM 3.00 use component MDM-MD-BP. *
If the enhancement was created in a system that does not contain *
the software component MDM 3.00 but BBPCRM x.yy use component *
CRMM-MD-BP. *
Else use component AP-MD-BP. *
In all cases: *
Describe the problem and provide all logon data according to note *
806015, section 3. *
SAP Note: 877637 note would give u some ...
Let me know some mre info required.\
Rewards points if helpful..
Siva

What are the limitations of remote API?

Excuse me,
I am new to Oracle BPEL, and going to customize the worklist application using remote API.
I read the Sample Worklist Application for learning the remote API.
When I learning about task attachment's API,
I saw a thread
RemoteWorklistServiceClient -- attachment
Suddenly, I found that there is different between local and remote API.
Would anyone like to tell me what are the limitations of remote API?
By the way, could there is any API for retrieve process list?
The reason is I am trying combine some feature of the console into my worklist application
such as list process with details, deploy/undeploy process, active/retired process lifecycle and turn on/off process state.
I only found how to start process:
Locator lLocator = new Locator({Domain}, {Domain.Password}, {Properties});
IDeliveryService lDeliveryService = (IDeliveryService) lLocator.lookupService(IDeliveryService.SERVICE_NAME);
lDeliveryService.request({ProcessName}, {OperationName}, {NormalizedMessage});
Thank you very much ^^
Roy

Excuse me,
I got the answer by testing the remote API
And I have another question about the BPEL API which used in the console
I have success construct the class com.oracle.bpel.client.Locator
It providing a set of methods for invoking Oracle BPEL
However, the methods always using WhereCondition as parameter
therefore, I need to know about the database.
1. Could anyone tell me where can I found the database schema?
2. There are some deprecated APIs what is the preferred APIs of them?
- IDeliveryService.SERVICE_NAME
- IDeliveryService.request({Process}, {Operation}, {NormalizedMessage})
- IDeliveryService.post({Process}, {Operation}, {NormalizedMessage})
Thank you very much ^^
Roy

What are the limitations of ODI?

ODI is an E-L-T tool of its first kind and has good performance when copared to ETL because of its architecture.
BUt what are the limitations of ODI?
And What are the strong points to recommand ODI to the clients?

what are the limitations of ODI ::
(i) it won't support multi target We cant say it wont support. We can achieve this using IKM mTI or using some logic in a single interface. But directly you can't drag multiple table into interface (target canvas)
(ii) Interfaces are depending on KM so to implement any new logic we need to know about Jython Not exactly. But yes if you know jython it is more helpful for this. Discussed
http://www.linkedin.com/groups/How-was-ODTUG-Ask-Experts-140609.S.197740849?view=&gid=140609&type=member&item=197740849

What are the limitations of AJAX in BEA Weblogic 10.2 ?

Hi All,
I am wondering if some one could tell/summaries what are the limitations of AJAX in BEA weblogic portal 10.2 ??

Please reask this question in the WebLogic Portal forum:
WebLogic Portal
I think you'll need to be more specific as well. Are you referring to portlet development, in which the portlet uses a javascript library, drag/drop functionality in Dynamic Visitor Tools, etc?
http://edocs.bea.com/wlp/docs102/clientdev/ria.html#wp1008891

What are the Limitations of EBP-SUS?

HI SRM Gurus,
What are the limitations of EBP-SUS?
1. Classic Scenario.
2. Extended Classic Scenario.
Is ASN possible with EBP-SUS extended classic scenario.
Version 5.0
Server 5.5
Thanks
Rams

Hi please refer to the OSS note with number 543544 for details
award points if usefull

What are limits of PreparedStatements?

Similar Messages

Maybe you are looking for