Hi all,
Given a rollback segment with storage as follows :
Initial Extent 5 MB
Next Extent 5 MB
Min Extents 20
Does this mean that every time a transaction uses this rollback segment it
allocates 100 MB ?
Does this mean that if there are two transactions using this rollback
segment, 200 MB is required ?
Thanks,
Alice
2  3730 
No. A transaction will only use as much space as it requires.
The rollback segment tablespace is just like any other tablespace (as
far as storage is concerned). Therefore it will allocate storage in
multiples of database blocks (db_block_size) .
A rollback segment that has 20 extents of 5Mb each has 100Mb available
for use by any number of transactions concurrently.
Matt
"Alice" <al***@reply-to-group.com> wrote in message news:<40******* *@news.tm.net.m y>... Hi all,
Given a rollback segment with storage as follows :
Initial Extent 5 MB
Next Extent 5 MB
Min Extents 20
Does this mean that every time a transaction uses this rollback segment it
allocates 100 MB ?
Does this mean that if there are two transactions using this rollback
segment, 200 MB is required ?
Thanks,
Alice
Thank Matt.
Regards,
Alice
"Matt" <mc***@hotmail. com> wrote in message
news:cf******** *************** ***@posting.goo gle.com... No. A transaction will only use as much space as it requires.
The rollback segment tablespace is just like any other tablespace (as
far as storage is concerned). Therefore it will allocate storage in
multiples of database blocks (db_block_size) .
A rollback segment that has 20 extents of 5Mb each has 100Mb available
for use by any number of transactions concurrently.
Matt
"Alice" <al***@reply-to-group.com> wrote in message
news:<40******* *@news.tm.net.m y>... Hi all,
Given a rollback segment with storage as follows :
Initial Extent 5 MB
Next Extent 5 MB
Min Extents 20
Does this mean that every time a transaction uses this rollback segment
it allocates 100 MB ?
Does this mean that if there are two transactions using this rollback
segment, 200 MB is required ?
Thanks,
Alice
This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
by: Gert Schumann |
last post by:
I want to delete just parts of tables, so I can't use 'TRUNCATE'. As I
want to delete about millions of lines, I need a very big rollback
segment. The best way would be to delete without using rollback
because the delete really takes a lot of time copying all data into
the rollback file. Is this possible with oracle?
Many thanks for any help!
Gert
|
by: jacob.miles |
last post by:
Hello. I'm trying to wrap a function call in a transaction, but when I
intentionally throw an exception in the middle of the function it
doesn't actually roll back the transaction. The debug output says
1/ROLLBACK, without any 1/COMMITs in there, but when I view the data in
the command-line mysql utility the changes have been made.
This is the code I'm using to connect to the mysql database and to wrap
the function call in a...
|
by: boston01 |
last post by:
I am testing a database application. It works fine when only one user
uses the application, however, when there are concurrent users, I saw
rollbacks in event log.
Can experts in this group tell me what is going on?
Thanks,
jz
|
by: minapatel |
last post by:
I have the following procedure
CREATE OR REPLACE procedure FOL_PURGE_CASES
as
/* type "SET SERVEROUTPUT ON" in sqlplus to debug !! */
cursor all_cases is
cursor all_cases is
select c.id00_warehouse, c.id00_case_nbr, c.id00_status_flag, c.id00_dlm
from phpick00 a, chcart00 b, idcase00 c
|
by: cheesey_toastie |
last post by:
I have a long query which I have set off and would like to stop, and
rename one of the tables used.
My query is due to my lack of understanding of the underlying
structure of MSSQL-Server...
So say and update updates TABLE_A and I stop it, whilst this
transaction is rolling back I attempt to rename TABLE_A to TABLE_A_OLD
and rename a different table to become TABLE_A. I am assuming that
the rollback actions will use the object...
| | |
by: Ian Boyd |
last post by:
We're encountering a situation where we're encountering a deadlock, and
someone's been made the deadlock victim. But after that, DB2 refuses to run
any SQL, and instead we get the error message:
"Application must execute a rollback. The unit of work has already been
rolled back in the database but other resource managers involved in this
unit of work might not. To ensure integrity of this application, all SQL
requests will be rejected...
|
by: priyan |
last post by:
Hi all,
I want to check the difference between the truncate and delete command. I know the difference between them ie., truncate is DDL and delete is DML statement. Delete can be rollbacked know but i tried it but it does not work out.
I tried this command
update employee set name='arun' where id=1;
ROLLBACK;
|
by: Alice |
last post by:
Hi all,
Given a rollback segment with storage as follows :
Initial Extent 5 MB
Next Extent 5 MB
Min Extents 20
Does this mean that every time a transaction uses this rollback segment it
allocates 100 MB ?
Does this mean that if there are two transactions using this rollback
|
by: Laurence |
last post by:
Hi,
DB2/400 seems not able to auto-rollback one of transactions while
dead-
lock occurred.
I called the procecure QSYS.CREATE_SQL_SAMPLE for creating sample
database, and used ISQL (STRSQL) & Navigator (Run SQL Scripts) to
evaluate it:
|
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: 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: 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...
|
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: 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();...
|
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...
| |
