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by: francis70 |
last post by:
Hi,
I have these 2 problem? Is there a way in Oracle to read UNCOMMITED
data. i.e. in Oracle the normal behaviour is that a user's updates to a
table are visible to other users ONLY when the user commits. But in
Informix there is this thing called ISOLATION LEVELS. For example by
setting the ISOLATION LEVEL to DIRTY READ, a user will read dirty data,
i.e. the last uncommited updated value of a field by some other user. Is
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by: Markus Breuer |
last post by:
I have a question about oracle commit and transactions. Following scenario:
Process A performs a single sql-INSERT into a table and commits the
transaction. Then he informs process B (ipc) to read the new date. So
process B starts "select ..." but does not get the previously inserted
row. The timespan between commit and select is very short.
(NOTE: two different sessions are used)
Questions:
1.) Does commit when returning from call...
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by: Chris |
last post by:
I think I understand the concept of repeatable read, but this scenario
doesn't make sense to me, if someone can explain.
Say you have an innodb table test with a string column s = 'blank' and
are using the default isolation level of repeatable read.
Session 1:
begin;
Session 2:
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by: pb648174 |
last post by:
I have a very long transaction that runs on the same database that
other users need to use for existing data. I don't care if they see
data from the transaction before it is done and am only using the
transaction because I need a way to roll it back if any errors happen
during the transaction. Unfortunately all tables affected in the long
running transaction are completely locked and nobody else can access
any of the affected tables while...
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by: kanda |
last post by:
Hello.
I am developing the application (VBA&ODBC, to be exact) which
periodically calls the stored procedures in the IBM DB2. A few of the
procedures require executing with isolation level RR ( ANSI
"SERIALIZABLE" ), not the default; default is CS (ANSI "Read
Committed")). The procedure language is SQL.
According to the documentation, I can adjust procedure *run*-time
isolation level by setting *compile*-time dataserver-wide option
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by: Gregor Kovaè |
last post by:
Hi!
If I create a procedure with BEGIN ATOMIC block I know these means that when
an error occurs all the SQL statements will be rolled back.
The question I have is:
If I select all records form a table and process them. The processing of
those records takes about 1 minute for example. In the meanwhile new
records come into the same table. If I issues the same SQL statement will I
see these new rows too ?
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by: m0002a |
last post by:
Is there some way to track the isolation level of an indivual SQL
statement submitted via JDBC in a snaphot or some other similar means?
I have JDBC programs that are changing the isolation level via
Connection.setTransactionIsolation(int level) method, such as
TRANSACTION_SERIALIZABLE or TRANSACTION_REPEATABLE_READ and I need to
verify that in DB2 at a SQL statement level. I don't see isolation
level in a snapshot for Dynamic SQL.
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by: D. |
last post by:
I have a question about the "readCommitted" transaction isolation level.
I have a client that is updating a record on a table.
I suspend the execution after the UPDATE but before the commit statement.
Than another client is trying to read the same record.
As transaction isolation is set to "readCommited" I expected that the second
client will read the old version of the record (before the update).
Instead, the second client hangs and...
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by: william.david.anderson |
last post by:
Hi there,
I have a newbie question regarding stored procedures and locking.
I'm trying to use a stored
procedure to perform a 'select for update' and return a cursor.
Below is a stripped down version
of the procedure:
CREATE PROCEDURE SELBTFLFORUPDATE()
LANGUAGE SQL
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by: RG |
last post by:
How can I lookup the current isolation level?
Thanks in advance
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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,...
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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: 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: 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...
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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: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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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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