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Manjula_23s
Member


Reged: 07/04/07
Posts: 74
Loc: Karnataka,India
Why Product have Bugs
      #404347 - 08/06/07 10:07 PM

We do Testing,Verification and RTM ,After doing all these also customer will report bugs.
What may be the cause for it?

--------------------
Manjula


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DeadGrunt
Member


Reged: 10/30/06
Posts: 156
Loc: Vilnius, Lithuania
Re: Why Product have Bugs [Re: Manjula_23s]
      #404350 - 08/06/07 10:32 PM

1. testing environment is not customers environment

--------------------
Roman


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Manjula_23s
Member


Reged: 07/04/07
Posts: 74
Loc: Karnataka,India
Re: Why Product have Bugs [Re: DeadGrunt]
      #404366 - 08/06/07 11:16 PM

Hi DeadGrunt Though testing environment is not customers environment but in Testing env. we simulate the custoemr environment right?

--------------------
Manjula


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bru
Super Member


Reged: 05/08/03
Posts: 1383
Loc: Austria
Re: Why Product have Bugs [Re: Manjula_23s]
      #404370 - 08/06/07 11:21 PM

Sounds similar to my "real-life" problems (though your posting sounds like an interview question).

Our problem:
Poorly defined requirements. If you test against poor requirements, you will not find the bugs that will be a problem for the customer (who knows his requirements).

Regards,
Juergen


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rozeest
Member


Reged: 06/21/07
Posts: 56
Re: Why Product have Bugs [Re: bru]
      #404372 - 08/06/07 11:25 PM

Network settings at customer environment might be different from the testing environment network settings.

--------------------
Roze


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GoogleMonster
Member


Reged: 01/17/07
Posts: 170
Re: Why Product have Bugs [Re: rozeest]
      #404379 - 08/06/07 11:37 PM

Correlate the reported bugs back to which requirements they relate to. Then check the test cases associated with those requirements to determine why these bugs were not detected during your formal test process.

There could be any one of a million reasons, but you won't find out why, and therefore what do do about it, unless you can cross-check and correlate your reported bugs/requirements/test cases/test results.

Once you've identified the common thread or cause, then obviously, you should fire him/her.

--------------------
You're not paranoid if they really are out to get you.


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alexxusz1980
Member


Reged: 05/26/05
Posts: 226
Loc: Europe
Re: Why Product have Bugs [Re: GoogleMonster]
      #404432 - 08/07/07 01:58 AM

customers use software differently then testers. they sometimes use ways of working you might not even dream of because they don't really make sense.

--------------------
Nobody's perfect.


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Tarun_Bansal
Member


Reged: 07/16/07
Posts: 52
Re: Why Product have Bugs [Re: alexxusz1980]
      #404437 - 08/07/07 02:07 AM

Most of the times the Bugs in UAT are due to incorrect interpretation of the requirements by the developer and tester

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Rich W.Moderator
Veteran


Reged: 03/05/04
Posts: 5815
Loc: West Coast of the East Coast!
Re: Why Product have Bugs [Re: Tarun_Bansal]
      #404471 - 08/07/07 03:16 AM

I came across a document the other day in my current project that would print up to page 15. When page 16 started to print I was blue screened. Not the common blue screen, but the one you get when the OS crashes totally. On investigation only one of our sites did this, but on all of the machines and with different printers. It was a GIF file that caused it. We cut our the pix and converted it to JPG then back to GIF and no more problem. I suspect an interaction with the drivers used at our site. But, needles to say, it was a show-stopper.

--------------------
Personal Comment

Success is the ability to go from one failure to another with no loss of enthusiasm.
~ Winston Churchill ~


...Rich Wagner


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Manjula_23s
Member


Reged: 07/04/07
Posts: 74
Loc: Karnataka,India
Re: Why Product have Bugs [Re: Rich W.]
      #404499 - 08/07/07 04:12 AM

Hi Rich W.
See will come across this after testing right?
I hope this forum is active
Much more practical situtations are expected

--------------------
Manjula


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Tarun_Bansal
Member


Reged: 07/16/07
Posts: 52
Re: Why Product have Bugs [Re: Manjula_23s]
      #404512 - 08/07/07 04:30 AM

Sometimes a system is released to UAT without running a regression test cycle after completion of integration testing. So the defects that were introduced while fixing the defects raised in integration are also delivered.

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Yury
Advanced Member


Reged: 12/31/99
Posts: 649
Loc: Toronto
Re: Why Product have Bugs [Re: Manjula_23s]
      #404524 - 08/07/07 04:50 AM

Quote:

We do Testing, Verification and RTM, After doing all these also customer will report bugs. What may be the cause for it?


These questions are for you:
1) Have you analyzed bugs reported by a customer?
2) Do you understand why they were not reported by a test team?

BTW, what is "RTM"?


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GoogleMonster
Member


Reged: 01/17/07
Posts: 170
Re: Why Product have Bugs [Re: Yury]
      #405356 - 08/08/07 05:47 PM

Real Time Monitoring (post-implementation) perhaps?

--------------------
You're not paranoid if they really are out to get you.


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KBMu
Member


Reged: 11/22/06
Posts: 59
Re: Why Product have Bugs [Re: GoogleMonster]
      #405376 - 08/08/07 09:39 PM


RTM is Requirement Traceability Matrix.

And If application is an online portal, we cant predict what the end user's configuration as well. Bugs even after our test is mainly because of Configuration/Environment/Rare Scenarios.

Thanks
KBM


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bigbobsanders
Junior Member


Reged: 11/08/02
Posts: 8
Loc: Columbus, OH, USA
Re: Why Product have Bugs [Re: Tarun_Bansal]
      #405662 - 08/09/07 08:28 AM

And if your requirements are subject to interpretation by either developers or testers, 9 out of 10 times the interpretation will be wrong.

Poor requirements equals idiotic software.

--------------------
Bob who used to be an honest tester


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rtehve
Super Member


Reged: 08/21/00
Posts: 1437
Loc: Elanora Heights, NSW, Australi...
Re: Why Product have Bugs [Re: bigbobsanders]
      #406245 - 08/12/07 05:42 PM

Reality about testing is that it is at best 70-80% effective. There are many reasons people see defects in a released product.

1) Different endless list of configurations (not all get tested) (OS's, Drivers, configs etc....)
2) Sociability testing - how other apps interact with your software can be a big unknown, especially if we are talking about apps that you never heard of.
3) Commercial reality - Even things you are aware of you take a commercial risk as the representative list of customers is too small.
4) Things just plain get missed or were not considered un-important during the planning phase (we are human)
5) Often companies take an aggressive approach to market penetration with early releases (MS are classic at this) with products often requiring 2-3 service packs before they are even stable..... anyone remember NT SP6 (weeks later NT SP6a)
6) Ineptitude - many organisations just have no idea how to test a product !

I could go on and on, but in summary do not assume testing is a) absolute b) perfect !

--------------------
Robert Tehve
rtehve@bigpond.com


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Pranjul
Newbie


Reged: 06/25/07
Posts: 11
Re: Why Product have Bugs [Re: rtehve]
      #406590 - 08/14/07 12:07 AM

I would like to share my experience here.
Experience 1: One of my tested product was installed on client site. For first 8 months it worked absolutely fine. But eventually customer faced problem. When he started the day, the data didn't replicate but after 1 hr from start of day, the data again replicated very smoothly. And this was not happened at testing environment even we restore their database too. Then our team went their and found that when he started the day, some script executed which cause that error.

Experience 2: Our application was working very fine on testing enevironment. But when the application installed on clinet site from the first day, we faced client complain. That issue was not simulate on our envirnment. So, we restore the Client Database on our environment. When we debuged the problem, we came to know that his previous customization (done by third party) changed the behaviour of application.

Experience 3: The release product was not possible to install at the client site. When we take the control of machine from customer, we found that the database setting was not according to release requirement. His database was in Case-Sensitive mode and we recommond Case-Insensitive mode. So we modified the script accordingly.

I can say that even we release the product/software with testing and requirement needed or release note, some issue always arises at the client site as either of their system configuration or hardware issue or previous application installed. So, not to worry about this:).

--------------------
Thanks and Regards,
Pranjul Srivastava - QA
Ambition is the germ from which all growth of nobleness proceeds.......


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drazle
Active Member


Reged: 11/30/00
Posts: 829
Loc: Michigan, USA
Re: Why Product have Bugs [Re: Pranjul]
      #406674 - 08/14/07 05:25 AM

Quote:

Ambition is the germ from which all growth of nobleness proceeds.




Pranjul, what is the source of this quote?

I'd have to disagree - nobleness as I understand it does not require ambition to grow. And more often than not, ambition does not lead to the growth of nobleness.

From Merriam-Webster: Ambition = an ardent desire for rank, fame, or power.

Perhaps something was lost in translation...


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wynnro
Junior Member


Reged: 08/08/05
Posts: 49
Loc: Kingsport Tennessee
Re: Why Product have Bugs [Re: Pranjul]
      #406706 - 08/14/07 06:44 AM

Quote:


I can say that even we release the product/software with testing and requirement needed or release note, some issue always arises at the client site as either of their system configuration or hardware issue or previous application installed. So, not to worry about this:).




Oops My intent as a professional is to release 'bug free' software. The statement at "some issue always arises" just does not cut the mustard.

Failure on the part of the QA department to find these issues are worried about, and many times money changes hands for this kind of issue.

Makes it something to worry about do you not think?


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alexxusz1980
Member


Reged: 05/26/05
Posts: 226
Loc: Europe
Re: Why Product have Bugs [Re: wynnro]
      #406791 - 08/14/07 11:22 AM

i agree to your point wynnro

on the other hand, read my signature: nobody's perfect. And time is tight, very...

In a budget restricted and risk management bound organization which basically provides QA as a service to internal business units rather then external customers, it can always happen that low priority rated scenarios were strapped from execution due to time constraints and that they thus end up in production.

point taken that this scenario should not happen for software which is sold to customers...

--------------------
Nobody's perfect.


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