While investigating deadlocks in an application I wrote a function to
check if there where any batchjobs running in parallell at the time of
the deadlocks. The check runs surprisingly fast, but If I narrow the
searchspace I start getting SQL0437W with reason code 3 "Optimizer cost
underflow". Statistics are up to date on the table. Is this something to
worry about, or can the warning be ignored?
/Lennart
1  5031 
Lennart wrote:
While investigating deadlocks in an application I wrote a function to
check if there where any batchjobs running in parallell at the time of
the deadlocks. The check runs surprisingly fast, but If I narrow the
searchspace I start getting SQL0437W with reason code 3 "Optimizer cost
underflow". Statistics are up to date on the table. Is this something to
worry about, or can the warning be ignored?
Never mind, I rewrote it slightly and the warning disappeared
/Lennart This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
by: James Cameron |
last post by:
Hi I'm developing a program and the client is worried about future
reuse of the code. Say 5, 10, 15 years down the road. This will be a
major factor in selecting the development language. Any comments on
past experience, research articles, comments on the matter would be
much appreciated. I suspect something like C would be the best based
on comments I received from the VB news group.
Thanks for the help in advance
James Cameron
|
by: David Sworder |
last post by:
Hi there,
I come from a Visual C++ background. When writing a service that's
exposed to the Internet, I had to check the incoming data stream (from the
client) VERY carefully. If a hacker was able to overflow one of the memory
buffers in my app, he was then able to execute code of his choosing within
the security context of the service. This led to all sorts of precautionary
measures such as ensuring that the service ran in a low-access...
|
by: pmatos |
last post by:
Hi all,
I've been having questions about strings, references,
initializations... I've created code (which will not compile due to a
reference problem) and I'd like comments on why this won't work and any
other comment to the code with efficiency in mind.
#include <iostream>
#include <string>
|
by: Greg |
last post by:
Except for legacy or non-.NET applications, is there any reason to use VC++
anymore? It seems that for .NET applications, there would be no reason to
choose C++ over C# since C# is faster to develop with (i.e. no header files,
objects are easier to create and use, C# language is native to .NET)
I'm sure this question will stir some emotions :-)
--
Greg McPherran
www.McPherran.com
|
by: R. MacDonald |
last post by:
Hello, all,
I have a .NET application (VB) that passes the address of a delegate to
unmanaged code in a DLL. The unmanaged code then uses the delegate as a
call-back.
This seems to work fine, but now I am worried about garbage collection.
I am concerned that the location of the delegate might be altered as
a result of other (unused) objects being garbage collected. This would
probably cause undesirable results when the unmanaged DLL...
| | |
by: Ron Garret |
last post by:
One of the things I find annoying about Python is that when you make a
change to a method definition that change is not reflected in existing
instances of a class (because you're really defining a new class when
you reload a class definition, not actually redefining it). So I came
up with this programming style:
def defmethod(cls):
return lambda (func): type.__setattr__(cls, func.func_name, func)
class c1(object): pass
|
by: robert maas, see http://tinyurl.com/uh3t |
last post by:
I'm working on examples of programming in several languages, all
(except PHP) running under CGI so that I can show both the source
files and the actually running of the examples online. The first
set of examples, after decoding the HTML FORM contents, merely
verifies the text within a field to make sure it is a valid
representation of an integer, without any junk thrown in, i.e. it
must satisfy the regular expression: ^ *?+ *$
If the...
|
by: John Salerno |
last post by:
Just something that crosses my mind every time I delve into "Learning
Python" each night. Does anyone see any value in learning Python when you
don't need to for school, work, or any other reason? I mean, sure, there's
value in learning anything at any time, but for something like a programming
language, I can't help but feel that I will be mostly unable to use what I
learn simply because I have no reason to use it.
The *process* of...
|
by: Rudolf Bargholz |
last post by:
Hi,
We have created triggers to log modifications to tables in our application.
The triggers work fine, just on one of the tables in our database the
triggers fail with the error message <SQL0437W Performance of this complex
query may be sub-optimal. Reason code: "1". SQLSTATE=01602>. The same
trigger on other tables works fine (the triggers are autogenerated with the
same structure for most of the tables used in our application).
I...
|
by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
|
by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
| | |
by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
|
by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
|
by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
| | |
by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
| | |
