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by: Tron Thomas |
last post by:
As part of applying for a programming position at a company, I
recently I had submitted some code samples to one of the developers
for review.
This is the feedback I received:
One of his concerns was frequent calls to new and delete, which can
cause
memory fragmentation over time. An example is the allocation and
destruction
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by: eric |
last post by:
Hi there,
BP hit ratio = 1 - (BP physical reads / BP logical reads).
If all the BP physical reads are asynchronous, it should mean that the pages
are brought up to the bufferpool before the database manager needs them.
But in that case, the BP hit ratio will be 0% (BP physical reads = BP async.
physical reads = BP logical reads).
Could this formula BP hit ratio = 1 - ((BP physical reads - BP async.
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by: xixi |
last post by:
hi, we are using db2 udb v8.1 on windows, i try to use the
configuration advisor to get recommendation on the parameter setting,
at first, i give the target memory for DB2 is 80% of the physical
memory, it gives me a recommendation on bufferpool size, so i accept
the change, later on , i found that i gave too much memory to DB2, so
i change the target lower, but the recommendation doesn't change the
buffer pool size accordingly, why is...
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by: Mark |
last post by:
I understand the concept of catalog cache (memory allocated from the
dbheap to allow catalog lookups without the need to access disk each
time). But the DB2 catalog tablespace (SYSCATSPACE) is assigned a
buffer pool, which seems to perform the same function as catalog
cache.
Is this simply a case of double buffering? Can anyone clear this up?
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by: Mark |
last post by:
In a DB2 V8.1 performance tuning document from a 3rd party vendor, I
found this statement. Can anyone verify this?
"DB2 requires 100 bytes of memory for every buffer pool and extended
storage page that is allocated to a database for use as a descriptor
in the database heap, so the size of the DBHEAP configuration
parameter should be considered before creating large buffer pools. For
example, a 1 gigabyte buffer pool with a page size of 4...
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by: Jean-Marc Blaise |
last post by:
Hi,
I find much regrettable that Database Engine Tuning Advisor be not part of
MS-Express Edition ... A server without such help is not a server.
Besides, you've got the tutorials, but not the tool to play with :-(((
Regards,
JM Blaise
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by: Kush |
last post by:
Hi. I am kind of new to DB2 and to this newsgroup so please bear with
me..
My question is: IBM installation creates 250 4k bufferpools by default.
I want to increase this number to 1000, no problem, and I want to
create another buffer pool and make it 1000 4k pages also. The
documentation says that "once a buffer pool is created, table spaces
can be assigned to it using create tablespace or the alter tablespace"
commands.
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by: xeqister |
last post by:
Greetings,
We are having a situation here whereby one of our staff created a
very huge 32K buffer pool in a production database and caused the
database to go down. When we try to reconnect to the database using
"db2 connect to <dbname>", its giving the following error:
SQL1224N A database agent could not be started to service a
request, or was terminated as a result of a database
system shutdown or a force command.
SQLSTATE:55032
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by: Xah Lee |
last post by:
http://xahlee.org/emacs/modernization.html
]
The Modernization of Emacs
----------------------------------------
THE PROBLEM
Emacs is a great editor. It is perhaps the most powerful and most
versatile text editor. And, besides text editing, it also serves as a
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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...
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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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...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
|
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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...
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