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by: John Bailo |
last post by:
I'm seeing some odd locking behavior when using an DB2400 database and
running an ado.net transaction. My code -- in simplified form, appears
at the bottom.
I want to run several INSERT statements using the same iDB2Connection
and iDB2Command. Then I want to Commit() so that either all the data
goes in, or not.
What happens though is this:
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by: Christoph Zeltner |
last post by:
hi,
i am writing a thesis on the concurrency control in db2 udb and oracle. I
found in the documentary of db2, that
a resource holding a (U)pdate-Lock can still be requested by a read-lock
(e.g. S). If the U-Lock wants to convert to a write-lock, does the
transaction have to wait for the transaction with the S-lock to finish ? Can
it starve ? Is this the symmetric RUX-Protocoll ? Questions, so many
questions ...
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by: John Bailo |
last post by:
I'm seeing some odd locking behavior when using an DB2400 database and
running an ado.net transaction. My code -- in simplified form, appears
at the bottom.
I want to run several INSERT statements using the same iDB2Connection
and iDB2Command. Then I want to Commit() so that either all the data
goes in, or not.
What happens though is this:
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by: harborboy76 |
last post by:
Hi all,
First of all, just want to let you know that I'm coming from
Informix background, and we just recently migrated to DB2. It's
been a great new learning experience. For the time being, I have
some questions regarding LOCK TIMEOUT and its compatibility with
LOCK MODE WAIT in INFOMIX.
Last week, I just found out that the following statement was
complied and built in Stored Procedure
SET LOCK MODE TO WAIT 5;
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by: Seeker |
last post by:
Hello,
I've read conflicting posts about
. Does it or does it not lock
the entire object? In my simple test it appears to block just the method but
I wouldn't exactly call my meager test conclusive...
thanks,
Scott
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by: Ed L. |
last post by:
I think I'm seeing table-level lock contention in the following function
when I have many different concurrent callers, each with mutually distinct
values for $1. Is there a way to reimplement this function using
select-for-update (or equivalent) in order to get a row-level lock (and
thus less contention) while maintaining the function interface? The docs
seem to suggest so, but it's not clear how to return the SETOF queued_item
and also...
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by: Komandur Kannan |
last post by:
We have a smart device application running on handhelds(Symbol MC9000G). The
backend is Oracle and a middle tier web services development done in Vb.net.
We use pessimistic Locking due to specific business needs
When such a lock is made for a transaction (this code is in the web service)
and the handhelds are terminated abnormally (cold booted or battery low),
the lock still remains. The Web service's connection to oracle is still...
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by: djc |
last post by:
I got great info on related question previously. This link
<http://www.yoda.arachsys.com/csharp/threads/volatility.shtml> from Brian
Gideon was especially informative.
1) the lock statement does *not* make the processor finish all code in the
code block before giving another thread from your process a slice of
processor time, it only makes sure other threads cannot run the same code
*if* they also adhere to the same lock object....
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by: blangela |
last post by:
If you had asked me 5 years ago about the future of C++, I would have
told you that its future was assured for many years to come. Recently,
I have been starting to wonder.
I have been teaching C++ at a local polytechnical school here in
Vancouver, Canada for approximately 8 years. Six years ago, at the
height (or should I say volume?) of the internet bubble, I had 80+
students per semester in my C++ course. Now I am fortunate to have...
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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.
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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: 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...
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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: 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
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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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