473,881 Members | 1,670 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

which registry variable to set ? (updated from 8.1 to 8.2)

Hi,

We are using DB2 ESE on AIX, having most tablespaces DMS on filesystem
This has the disadvantage that all data which is read into bufferpools also
is read by JFS filesystem paging.

On db2 8.1 we used these registry settings
DB2_DIRECT_IO=o n
DB2_STRIPED_CON TAINERS=on

After updating to version 8.2 we had a huge decrease of performance (e.g.
db2 backup takes twice as long) on all 3 machines we have running this way.
We also see that both registry variables are not supported anymore.
(DB2_STRIPED_CO NTAINERS is not supported for a longer time...)

After removing these (not supported !!) variables we won a lot again, but
the systems still aren't as fast as they were before. I'm sure we're NOT the
only ones to have this problem.

Which variable do we have to set to prevent JFS filesystem paging now
DB2_DIRECT_IO is not supported anymore. Or is there another solution for
this. (please don't answer to run DMS on RAW LogicalVolumes)

Knokmans

Nov 12 '05 #1
1 2246
In article <41************ ***********@dre ader18.news.xs4 all.nl>,
Knokmans (kn******@nospa m.com) says...

Which variable do we have to set to prevent JFS filesystem paging now
DB2_DIRECT_IO is not supported anymore. Or is there another solution for
this. (please don't answer to run DMS on RAW LogicalVolumes)

Knokmans


Hi,

DB2 8.2 introduced the FILE SYSTEM CACHING option. Check the CREATE
and ALTER TABLESPACE commands.

Hope this helps.

Kind regards, Gert
Nov 12 '05 #2

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

9
1924
by: Swami | last post by:
I was wondering how I can programmatically find out the path of an installed program. I have an application that needs access to a config file that resides in the folder of another application. I'm guessing that this can be done by accessing the registry, but some articles or sample code would be useful. Thanks.
8
2917
by: Mark A | last post by:
Here is the description of a new feature in 8.2.2 (FP9) from the InfoCenter: "DB2_SKIPINSERTED registry variable You can use the DB2_SKIPINSERTED registry variable to skip uncommitted inserted rows for Cursor Stability (CS) and Read Stability (RS) isolation levels. The registry variables DB2_SKIPDELETED and DB2_EVALUNCOMMITTED are used to skip uncommitted deletions and uncommitted updates. Otherwise, CS and RS
3
1222
by: | last post by:
Hi all I am retrieving the value of the Environment path variable from registry key HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Sessio n Manager\Environment I notice that there is also other keys like ControlSet001, ControlSet002 etc. What is the difference between all these?
5
1262
by: Jan Bares | last post by:
Hi, can someone explain me this behaviour: (steps to reproduce) 1. Open HKLM/SYSTEM\CurrentControlSet\Services\Eventlog\Application 2. Look at the "Sources" value 3. Now create new key under the "Application" 4. The new key is magically added to the "Sources" value (along with "New key #") when you refresh the view
3
3065
by: Slimo | last post by:
Hello, I'm searching some example of code (VB) for reading remote registry subkeys and keys. Thanks
1
1348
by: Bud Roble | last post by:
I've written a service program in VB.NET and I can't seem to get it to be able to read entries in the registry. Is there some trick to this? I have a windows program that reads and writes the same registry entries and it works fine. I'm using the exact same code in the service program to read the registry entries but it always returns nothing, so my program won't start because I'm trying to assign a null value to a variable. Any...
1
1840
by: thickface | last post by:
Hi all, I have a question and any suggestions for solutions would be greatly appreciated. In my program, I first defined a variable called 'incidence' which has to be updated at every time step, public static int incidence = 0; Then I have a method which is called 'step()' and inside 'incidence' is updated.
0
1571
by: Dan Holmes | last post by:
I recently updated to SP1 of vs2005 and i didn't have this error before. I changed a registry entry that had to do with development. I found it on msdn and now i can't find it anymore. I suspect it may be the problem. The entry had to do with directory paths or something so that debugging in VS could be done on code not in the bin dir of the project. Does that ring a bell to anyone? An unhandled exception of type
6
6686
by: sd | last post by:
hello I need to keep my app entry under HKEY_LOCAL_MACHINE\Software\MyApp. (to support for all users).I need to update one key under MYApp. When I attempt to set value for this key My.Computer.Registry.LocalMachine.CreateSubKey("software \MyApp").SetValue("Licence", "Success") I get error stating Access to HKEY_LOCAL_MACHINE\Software\MYapp denied for Vista only.For XP no problem.If for Vista I give full control to Myapp reg folder...
0
9776
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,...
0
10718
jinu1996
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...
1
10816
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,...
0
10401
tracyyun
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...
1
7953
isladogs
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...
0
5781
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...
0
5977
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
2
4196
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
3
3225
bsmnconsultancy
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...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.