473,414 Members | 1,776 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,414 software developers and data experts.

Bufferpools

Can anyone please explain in english the difference between blocked and
non-pages in a bufferpool.

What would be a typical ration one would use for say a 100,000 4kb size
BP. 50/50 blocked v unblocked ?

Nov 12 '05 #1
1 1814
Applications that employ sequential prefetching can benefit from
improved performance through the use of blockbased buffer pools, which
allow blocks of contiguous pages to be moved into contiguous portions
of memory. Keep in mind that block-based pages will be wasted if your
application doesn't perform sequential prefetching.

Typically, SQL statements that do table scans large tables will do
sequential prefetching Blockbased buffer pool pages should not be used
for OLTP applications or whenever sequential prefetch is not common.

Where you have large data warehouse tables that are often accessed via
full table scans, you can place those tables in tablespaces that are
specifically linked to bufferpools with block based pages.

Nov 12 '05 #2

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

Similar topics

22
by: Smutny30 | last post by:
Hello, I am preparing a database that will store 10 n * GBs - 100 n * GBs of data. I calculated to have 1,2 GB of bufferpools. I run the DB2 v. 8.2.1 alone on 4 GB box. I obtain : ...
2
by: rAinDeEr | last post by:
Hi, Am trying to create the DDL statements of a database using $ db2look -d TESTDB -e -z db2tar -i testiii -w test123 -m -o db2look.sql I get all the useful information except that of the...
1
by: rAinDeEr | last post by:
Hi, Am trying to create the DDL statements of a database using $ db2look -d TESTDB -e -z db2tar -i testiii -w test123 -m -o db2look.sql I get all the useful information except that of the...
0
by: vidya panicker | last post by:
Hi, is there a specific number of bufferpools in UDB version 7.1 or is it a user decidable variable?
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
1
by: nemocccc | last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
1
by: Sonnysonu | last post by:
This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...
0
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...
0
Oralloy
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,...
0
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...
0
agi2029
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,...
0
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...
0
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...

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.