Capturing SQLNET client-server traffic

Pardon the somewhat newbie-like question ...
I am trying to build a API test stub where I need to be able to capture the requests and responses between third-party two-tier applications then replay the traffic. The replay is easy. The capture, though, is giving me trouble.
For HTTP traffic, it is easy. I just change Internet Explore's HTTP port address to point to a fake proxy which records the requests the sends the requests onto the real web server.
Is there an equivalent to this in the SQLNET world? I am hoping that a proxy already exists to do this.
If not, is there a way to turn on a full trace for a specific client? I would need to capture all connections coming out of the client and no other client's connections.

This could provoke quite a discussion.
"If your client are on slow links you may, for example query 10,000 rows of data. "
Generally, forms shouldn't be pulling back tens of thousands of rows from the database. Your user is unlikely to page through that much, so either you want a summary (which is best calculated on the database server and the summary results dragged across the network) or you are paging through records in the tens, not tens of thousands. (Look at the 'Number of recods buffered' property in your base table blocks. Bet it's one or two digits, not five!)
"The information that is transmitted to the client is basically screen draw information - and this will be alot less than the 10,000 rows you were querying before. "
As above. In client/server you shouldn't have been bringing stuff from the database down to the client that wasn't going to be on the screen anyway, especially if you had a slow network.
Depending on how your application is written, it could well peform a lot worse on the web than in client server. Rather than having the client do a fair share of the work, it's now got to keep talking to the application server to get anything done.
For example, because navigation triggers don't allow the use of restricted built-ins, rather than putting code in a 'post-text-item/when-validate-item' trigger on the relevant item, it gets put in a form level 'when-new-item-instance' trigger. It's a bit untidy in client/server but workable. Put it on the web, and every time the user tabs between fields, the form has to go off to the application server to fire the when-new-item-intance trigger to tell it what to do next.
Another 'speed-bump' is if you have any synchronize bits (eg in a post-query trigger, or as part of a "I'm 10% complete" information messages in long running loops). These will also generate network traffic between the app server and form.
While web server does have advantages, I wouldn't be selling it on it's performance improvements.

Similar Messages

Client/Server network traffic.

I don't know if here is the right forum to ask it, but let's go on.
Nowadays we a system on Forms 4.5/windows/Oracle 8.0
We have some clients machines linked to the server by a Frame-Relay link and we use Windows 2000 Terminal Server to reduce the network traffic.
Well, we are gonna update to Forms 6i/Oracle 8i.
I would like to know if Forms Server can be a good option to Windows 2000 Terminal Server.
If I haven't been clear with my question I'll can do it again. I'm new on Forms 6i and I've just installed it to test (It hasn't been working yet....)
Thanks in advance
Ronaldo.

This could provoke quite a discussion.
"If your client are on slow links you may, for example query 10,000 rows of data. "
Generally, forms shouldn't be pulling back tens of thousands of rows from the database. Your user is unlikely to page through that much, so either you want a summary (which is best calculated on the database server and the summary results dragged across the network) or you are paging through records in the tens, not tens of thousands. (Look at the 'Number of recods buffered' property in your base table blocks. Bet it's one or two digits, not five!)
"The information that is transmitted to the client is basically screen draw information - and this will be alot less than the 10,000 rows you were querying before. "
As above. In client/server you shouldn't have been bringing stuff from the database down to the client that wasn't going to be on the screen anyway, especially if you had a slow network.
Depending on how your application is written, it could well peform a lot worse on the web than in client server. Rather than having the client do a fair share of the work, it's now got to keep talking to the application server to get anything done.
For example, because navigation triggers don't allow the use of restricted built-ins, rather than putting code in a 'post-text-item/when-validate-item' trigger on the relevant item, it gets put in a form level 'when-new-item-instance' trigger. It's a bit untidy in client/server but workable. Put it on the web, and every time the user tabs between fields, the form has to go off to the application server to fire the when-new-item-intance trigger to tell it what to do next.
Another 'speed-bump' is if you have any synchronize bits (eg in a post-query trigger, or as part of a "I'm 10% complete" information messages in long running loops). These will also generate network traffic between the app server and form.
While web server does have advantages, I wouldn't be selling it on it's performance improvements.

Mac mini server how many clients serve same time

mac mini server[lion server] how many clients serve same time, the web server, suppose only traffic the web server?
macs/PCs with server OSs designed for work as normal, but more mainly for left on, connected and serve clients on the internet eg web server, mail server? T/F

Thanks for your help. I actually forgot that I posted this and when I saw the email telling me you sent a repsonse I then did another search (using a different phrase) and I found this:
https://discussions.apple.com/thread/4554036?start=0&tstart=0
I think that is saying that I can do what I am asking.

How to minimize Client-Server Round-trip in ADF Faces application ?

Hi All,
We have just finished POC on our prototype of ADF Faces + ADF BC application. The POC Emphasizes on Bandwidth requirement.
After receing the result from the communication provider, including : TCP packets send, Bytes sent from/to server and number of Client-Server Round-Trip.
There are several part of the application that Must be tuned for the application to run on acceptable performance.
Here is some page/ function that should be tuned :
- First page, ADF Read Only Table with two images and some buttons, cause 5 round-trip
- ADF Dialog Returning Value (as LOV), cause 4 Round-trips
- On ADF Form, press Commit button, cause 3 Round-trips.
So the question is :
1) How to reduce round-trips on ADF Faces application ?
2) How to minimize the bytes send from / To server on a specific user action ?
Please give me some recommendation..
Thank you very much,
xtanto

Hi Frank and Steve,
Thank you for your reply.
Yes Frank, what I mean by Round-Trip is the traffic between Client and the Server. And Yes, we will use VSAT where the latency is 1 - 1.5 second, so that round-trip matters significantly.
What I will do is :
- use minimal skin and No image at all
- don't use Dialog for LOV because it requires AutoSubmit there.
- Use 'Apply-Changes' button to do server-side validation before Commit.
Then do the POC / testing again.
Thank you,
xtanto

Client/server application (Help me)

I have a client server application.In the client part i send data to the server and the server receive data. After receiveing data server also send some data but the client can't capture data. Anyone please tell me what is the problem?
I am giving the sample code here......
I am thinking actually the problem is in the client side.......
Server
out = new DataOutputStream(client.getOutputStream());
input = this.client.getInputStream();
byte[] data=new byte[input.available()];
input.read(data);
byte[] sdata=new byte[3];
sdata[0]=1;
sdata[1]=2;
sdata[2]=3;
out.write(sdata);
Client
How can i implement my client to send and receive at a time??

Thanks all of u.
I have solved the problem.
Now i have another problem.In the Client side I have used DataOutput
Stream(for sending) and InputStream(for receiving).
With the InputStream i am capturing data by this way.....
int dataSize=is.available();
int kkk=0;
boolean hasSize=true;
while (kkk<=0) {
dataSize = is.available();
         if (dataSize != 0 && hasSize) {
                      byte[] dat = new byte[dataSize];
                      is.read(dat);
                       String s = new String(dat);
                       System.out.println("Capture:" + s);
                       System.out.println("data ssss: "+dataSize);
                       hasSize=false;
                       kkk=9;
                   }//End of if
}//End of while
                 Here is the problem. If I am sending from the server data size less 4000 byte then the client can easily capture the data. But when i am sending the data which is very very large such as 70,000 bytes then it creates a problem.
My target is simple. I want to capture the whole data that is send by the server . then want to keep the data in a byte array which size will depend upon the receiving data.
How can i do that??

Headstart and Client/Server (C/S)

Hi 'Generators',
I have a question related to running Headstart generated Forms within a C/S environment. Is it possible to get a stable C/S environment?
I have checked the Headstart installation manual and there is a chapter "Using Headstart 6.5 in a Client/Server Environment". I have implemented the changes to the object library (where can i find "progress_indicator.amount" by the way???) but the forms are still not very stable in the client server mode. When i run the form in Oracle forms developer standalone there are no problems. When i run the form from the start form it crashes almost immediately. HEEEEEEEEEEEEEEEEEELLLLLUUUPPPPPP!!!!! Have i missed an undocumented change to the object library????
If somebody was able to create a stable C/S environment!!! Please let me know!!!!
Gr.
Louk

Hi Lauri,
First of all, thanks for your information and your e-mail.
This is what i have tried at the beginning of this week. To see if text "automatic" was still in my forms i converted my forms from FMB to FMT format and did a search and replace on "automatic". For every text "automatic" found i have changed it to some kind of default color and then converted the forms back to FMB and then i have tried them to run again. The forms still crash. The strange thing is that they run correct within the FORM builder as stand-alone forms (open form in forms builder and then hit the traffic light to run the form). When i run them within the main form (start-form with menu's to call my forms) things start to go wrong. What is the difference? Is there something i forget? Can you tell me if there is someone out there who was able to get a stable environment at all?
Our plan to run the forms in a C/S environment using Citrix seems to be over when it is not possible to get it stable. We have to use the WEBFORMS environment instead and this means we have to invest in the Forms Server. Or are there other alternatives?
Gr.
Louk

Client/Server VLAN usage - ACE Module

Is it a condition to use client/server VLAN definition only for VIP hits or can it also be used to pass normal traffic for e.g. passing traffic to the server directly on its actual IP (not VIP).
Regards.

No vip restrictions.
With appropriate ACLs you can use ACE to route traffic between different vlans.
Syed

Client/Server to Web-Based application Conversion

Hi! Everyone,
I have couple of questions for you guys.
Our Client had recently upgraded Forms 4.5 to 6i to move from Client/Server based application to Web based application.
They are using Forms Server 6i Patch Set 1, OAS 4.0.8.1, Windows NT Service Pack 5 and Oracle 7.3. They are facing the following error every now and then, when they run the forms,
"FRM-92100: Your connection to the server was interrupted. This may be the result of a network error or a failure on the server.You will need to re-establish your session."
Please let me know what might be causing the above error. The only problem i can think about might be Oracle 7.3. If i am right only Oracle 8 and above supports Forms 6i.
Can anyone let me know some tips and/or techniques to upgrade Forms 4.5 to 6i. If there are any important settings/steps which we might have over looked during the upgrade, please list them.
Any kind of help is greatly appreciated.
Thanks,
Jeevan Kallem
[email protected]

Most of the code is use with no changes at all.
See otn.oracle.com/formsupgrade
Regards
Grant Ronald

Client/server program validation - is it possible?

I've been mulling over this problem for a few days, and am starting to wonder if it's theoretically possible to find a solution. I'm not looking for specific code, this probably won't even be implemented in Java, I'm just wondering if there is a theoretical program model that would work in this situation.
The short version:
Validate the data generated by a client program, without knowing the original data.
The long version:
This is a "profiling" system for a MMOG (Massively Multiplayer Online Game). The MMOG is an internet based client/server graphical program where each client connects to the server and they interact with each other and the virtual world. They pay a monthly fee for access to the game. My program is not affiliated with the MMOG or its makers. I have no connections inside the company and cannot expect any cooperation from them.
The "profiling" system is also a client/server model. The client program runs in the background while the MMOG client is active. It accesses the memory of the MMOG client to retrieve information about the player's character. Then, possibly on request or maybe immediately, it sends the character data to our server.
What I want to validate is that the character data being sent is unmodified and actually comes from the MMOG program.
I can reasonably expect that with mild encryption and some sort of checksum or digest, the vast majority of problems can be avoided. However, I am not sure it's possible to completely secure the system.
I assume that the user has access to and knowledge of the profiler client and the MMOG client, their assembly code, and the ability to modify them or create new programs, leveraging that knowledge. I also assume that the user does not have access to or knowledge of either of the server applications - the MMOG server or mine.
In a worst-case scenario, there are several ways they could circumvent any security I have yet been able to think of. For instance, they could set up a fake MMOG client that had the data they wanted in memory, and let the profiler access that instead of the real thing. Or, they could rewrite the profiler to use the data they wanted and still encrypt it using whatever format I had specified.
I have been considering using some kind of buffer overflow vulnerability or remote execution technique that would allow me to run specific parts of the client program on command, or get information by request, something that could not be anticipated prior to execution and thus could not be faked. But this seems not only insecure for the client but also not quite solid enough, depending on how it was implemented.
Perhaps a series of apparently random validation codes, where the client does not know which one actually is doing the validation, so it must honor them all. Again, this is very conceptual and I'm sure that I'm not explaining them very well. I'm open to ideas.
If I don't come up with anything better, I would consider relying on human error and the fact that the user will not know, at first, the relevance of some of the data being passed between client and server. In this case, I would include some kind of "security handshake" that looks like garbage to the client but actually is validated on the server end. A modified program or data file would result in an invalid handshake, alerting the server (and me) that this client was a potential problem. The client would have no idea anything had gone wrong, because they would not know what data the server was expecting to receive.
I hope I have not confused anyone too much. I know I've confused myself....

Yes, that is the general model for all MMOGs these days - no data that can actually affect the game is safe if loaded from the client's computer. All character and world data is sent from server to client and stored in memory. Any information that is saved to the client's computer is for reference only and not used by the game engine to determine the results of actions/events etc.
My program accesses the MMOG client's memory while the game is running, and takes the character information from there. It does not have direct access to the MMOG server, and does not attempt to modify the data or the memory. Instead, it just encrypts it and sends it to our server, where the information is loaded into a database.
The security issue comes into play because our database is used for ranking purposes, and if someone were to hack my program, they could send invalid data to our servers and affect the rankings unfairly.
I'm just trying to think of a way to prevent that from happening.

SENDING EMAIL USING ORACLE9i CLIENT/SERVER

I HAVE DOWNLOADED 2 UTILITY LIBRARIES D2KCOMN and D2KWUTIL TO MY COMPUTER. THESE 2 LIBRARIES ARE COPIED TO AN ORACLE FORM. ON THE FORM, THERS IS A BUTTON. IN THE WHEN-BUTTON-PRESSED-TRIGGER, I HAVE CODED
WIN_API_SHELL.WINEXEC('"C:\PROGRAM FILES\MICROSOFT OFFICE\OFFICE\OUTLOOK.EXE"-c IPM.Note/m"'||:email.recipient_name||'&cc='||
:email.recipient_name2||'&subject='||:email.subject||
'&body='||:email.mes||'"',WIN_API.SW_SHOWNORMAL,TRUE);
:email.recipient_name,
:email.recipient_nam2,
:email.subject, and
:email.mess
ARE FIELDS ON THE ORACLE FORM.
THE NAMES ARE DEFINED BY THE PROGRAMMER.
THE NAMES OF THE FIELDS ARE NOT RESERVED WORDS.
WHEN THE CODE IS EXECUTED, MICROSOFT OUTLOOK IS OPENED AND THE RECIPIENT LINE, COURTESY COPY LINE, SUBJECT LINE
AND BODY OF A NEW MESSAGE ARE PREPOPUTATED WITH THESE FIELDS FROM AN ORACLE FORM.
THIS ROUTINE WORKS FINE ON AN ORACLE6i CLIENT SERVER BUT IT WILL NOT WORK WELL ON AN ORACLE9i CLIENT SERVER.
WHAT DO I NEED TO DO TO CHANGE MY CODE? DO I NEED TO USE NEW UTILITY LIBRARIES? I WOULD SURE LIKE TO KNOW WHAT TO DO.

Oracle9i Forms does not support client server - so you are running in a different environment (even though you may still only be onl two tiers).
Regards
Grant Ronald
Forms Product Management

VPN Site-to-Site or VPN Client Server with Cisco IP Phone 8941 and 8945

Hi everyone,
I decide to deploy a CUCM (BE6K platform), SX20, and IP Phone 8941/8945 on Head Office and Cisco SX10 and IP Phone 8941/8945 for branch offices (actually 9 branch offices).
The connection will use internet connection for HO and each branch offices.
And the IT guy want to use kind a VPN client server or VPN site-to-site for the connection through internet,
what kind of VPN client server or VPN site-to-site that recommended for this deployment?
and what type of Cisco router that support that kind of VPN (the cheapest one will be great)?
So the SX10 and IP Phone 8941/8945 in branch offices can work properly through internet connection?
please advise
Regards,
Ovindo

Hi Leo,
technically, the ipsec users will not use up any premium license seats, so if you have 10 ipsec users connecting first, the premium seats are still free and so you can then still have 10 phones/anyconnect users connect.
However, the 250 you mention is the global platform limit, so it refers to the sum of premium and non-premium connections. Or in other words, you can have 240 ipsec users and 10 phones, but not 250 ipsec users and 10 phones.
If 250 ipsec users and 10 phones would try to connect, it would be first-in, first-served, e.g. you could have 248 ipsec users and 2 phones connected.
Note: since you have Essentials disabled I'm assuming you are referring to the legacy "Cisco vpnclient" (IKEv1 client) which does not require any license on the ASA. But for the benefit of others reading this thread: if you do have Anyconnect clients (using SSL or IPsec/IKEv2) for which you currently have an Essentials license, then note that the Essentials and Premium license cannot co-exist. So for e.g. 240 Anyconnect users and no phones, you can use Essentials. For 240 Anyconnect users and 10 phones, you need a 250-seat Premium license (and a vpn phone license).
hth
Herbert

How to delete the workbench client server name in FDM

Hi Gurus
How to delete/change the workbench client server name in FDQM?
regards
Sarilla

OK, I understand now. You are referring to the Load Balance Server Group. Yes, this can be done:
a) Browse to Oracle\Middleware\EPMSystem11R1\Products\FinancialDataQuality\SharedComponents\Config
b) Locate the LoadBalanceServerGroups.xml file
You can delete this file. The next time the workbench is launched it will ask you to set the load balance server group again and will create this file again.

Which keys are used in Client/Server Authentication?

Hi.
I am trying to understand how SunX509 algorithm works in a TLS context. When Server or Client authentication is done, which keys of the keystore are used?
I mean, when you set up your KeyStore instance, it is loaded a whole KeyStore from the filesystem, which has a lot of keys to be used. Are they all tried in order to find the key that authenticates the Client/Server, and when a key that works is found means that Client/Server is authenticated? Or a concrete key with a specific alias is used?
Do you know a doc or something similar where i can see this explanation? I haven't found this matter in JSSE API User's Guide nor in JSSE Javadocs.
Thanks!

The alias that is chosen is arbitrary and depends upon the order in which the aliases are returned via a hashtable enumeration. If you want to make sure you're using a particular aliasn you must write your own key manager, take a look at the X509KeyManager interface with methods such chooseClientAlias(), chooseServerAlias(), ...

Looking for a client/server that supports multiple protocol and delivery

Hi all, I don't know if this the right place to ask my question,here it goes.
I am looking to develop a client-server that supports multiple protocols such as HTTP, HTTPS etc. I am looking for a framework( i don't know if that is correct or I need some kind of web-service (soap etc)) that would manage connection, security etc. I would like to like to devote most of my time in developing business objects with multiple delivery mechanism such as sending serilized java objects, xml message or soap message, or in some case JMS message as well. So I need a client server that can come in via TCP/IP or HTTP or anyother industry standard protocol and I should be able to service him with pub/sub model and also request/response model as well.
I don't know if I had explained what I need, I would like to know what technologies I should be evaluating and which direction I should be heading... Also the server I'm developing should be free of Java constraints if needed...
Also this service is not webbased service as now but if need arises I should have a flexibilty to make them web enabled in future. Also I would like to work with open source webservers or appservers if I need

Inxsible wrote:I installed i3 - along with the i3status - which I still have to figure out. I am liking what I see as of now. It reminds me of wmii -- when I used it way back when. However I do not like the title bar. I would much rather prefer a 1 px border around the focused window.
"i3 was created because wmii, our favorite window manager at the time, didn't provide some features we wanted (multi-monitor done right, for example), had some bugs, didn't progress since quite some time and wasn't easy to hack at all (source code comments/documentation completely lacking). Still, we think the wmii developers and contributors did a great job. Thank you for inspiring us to create i3. "
To change the border of the current client, you can use bn to use the normal border (including window title), bp to use a 1-pixel border (no window title) and bb to make the client borderless. There is also bt which will toggle the different border styles.
Examples:
bindsym Mod1+t bn
bindsym Mod1+y bp
bindsym Mod1+u bb
or put in your config file
new_window bb
from: http://i3.zekjur.net/docs/userguide.html (you probably already found that by now )

Client-Server - SOA.... Is it really a transition or a big development ?

Hi,
In all sources related to SOA/ESA by SAP, it is said that, transitioning from Client-Server Arch(CSA) to SOA is the same as transitioning from Mainframe systems to Client-Server Arch.
If we think about Mainframe and CSA, it is obvious that there had been big differences in that transition. Such as, the INTELLIGENT CLIENT concept had appeared to replace the DUMMY CLIENTS, so this had changed the way of IT Business. There would be a main application providing several functionalities(server) and other applications which want to use those functionalities (clients) would connect to the server using some functionalities on its own (that means a client appliction should also have some functionalities in order to at least connect to the server, so that made them different from the DUMMY clients of the mainframe era)
Now, when I look at the differences between SOA and CSA, I cannot see that incompareble differences.Why ? Let me explain :
- One of the most important differences between SOA and CSA is, SOA is vendor and platform independent, so that any application can call any applications functionality as long as they are using Web Services. That is true. But the question arises here : It is still the case that someone is calling some others' functionalities (services), so there is still a client/server mentality, isn't there and We will still be using several client/server programming languages in order to realize the main functionality of the web services but this will be transparent to the user and the integration. The main difference is, SOA is vendor and platform independent. But I don't think this can be commented as a missing feature of CSA. Because the aim of CSA was to make the clients more intelligent and not to make them vendor/platform independent. And also architectures like CORBA and DCOM have also tried to achieve that independency (even though they have restrictions compared to Web Services, one of the main reasons for this is using Web as a transport/communication protocol) but they are still treated as some extensions on top of CSA because they are using CSA beneath. But if we compare Mainframes and CSA, even though I haven't seen manframe ages, I think it is clear that CSA does not use any architectural functionality of Mainframes. They are completely different.. But is SOA and CSA completely different ?
I agree with all reasons why today business needs sth more agile, more flexible and it is becoming clearer day by day that SOA and Web Services provides this environment, BUT, I still cannot make it clear, WHY it is accepted as a transition from CSA and why it is not treated as a big development over CSA while using the main features of it.
Any comments will be appreciated.
Regards
Ahmet Engin Tekin

Good point..Actually those are the things clearly known but it becomes a bit confusing to build clear sentences when it comes to declare the differences. Anyway, here are my additions :
- Mainframes were centralized systems which had their own hardware architecture as well. All processes/applications were running on 1 central DB/system and everyone in the company had to use the same functionality and interface.
- In time, as a result of business demand, people needed different functionalities/applications regarding different business needs. This could either be done by extending the higly-costed big mainframe systems/softwares OR a new approach had to be developed in order to solve those problems. At this point, (thanks to IBM,Macintosh and Xerox) PC and ethernet concepts had emerged. That was a completely different hardware architecture which allowed less costly systems and also distributing the process load and/or applications to different systems in one landscape (app servers, intelligent clients - 2 tier, 3- tier arch.). Thus, while those were happening on harware side, new communication and programming models/languages emerged on software side. As a result, people started using different applications on different systems according to their needs and thus an efficient solution had been provided to the business need (described above).
To criticise, this was really a big transition. Not only software concepts but also hardware concepts are also changed drastically. Actually, it is not wrong if we say, developments on the hardware side, allowed changes on the software side
- What happened next ? Companies started using so many different applications by different vendors with different business logic and programming models (thanks to CSA). But in times, this has emerged the biggest problem of the CSA era : Integration.
We all know the rest. "Web Services" concept emerged with SOA as well. So that, the boundaries between the systems began to disappear.
So, is this a transition ? Well, yes it is.. The point that made it confusing (at least for me) is that this time there is no hardware transition (yet) but only a transition in software side. But I still insist that the IT transition during Mainframe->CSA was like a revolution (forget what you've left behind) but from CSA to SOA; it is more likely to be an evolution (the next best thing)
Anyone have more comments ?
Regards,
Ahmet

Capturing SQLNET client-server traffic

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