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by: Jan Arickx |
last post by:
My situation is as follows. I have several big SQL queries in a data
warehouse using 1 big fact tables and 10 dimension tables. The queries
join all of them together but the optimizer doesn't care which
dimension table it joins first (we ran runstats on all of them but the
dimensions look a lot alike... about same order of rows, ...). I know
it should first join on 1 specific dimension if it's in the query
since that dimension will discard...
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by: Todd McNeill |
last post by:
Hi-
Something was just pointed out to me this morning. According to the
V8 Command Reference, the RUNSTATS command no longer uses the SHRLEVEL
CHANGE/REFERENCE clauses, and it looks to be replaced with ALLOW
READ/WRITE ACCESS. Is SHRLEVEL still a valid clause and
interchangable with ALLOW..., or has it been deprecated and is it, or
will it eventually become, invalid? We currently are not seeing any
errors using SHRLEVEL in our...
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by: Gilda |
last post by:
Does anyone know what entity (utility?) checks if statistics
collections are required, if the Automatic RUNSTATS is enabled, in
version 8.2?
How often are these checks done?
Thanks.
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by: raqfg |
last post by:
Hi.
I am trying to test out the automatic maintanance with notification
feature of DB2 v8.2. I have enabled the auto maint with notification.
The problem I am facing is that I only get email notifications from DB2
when there is an alarm as follows:
ADM10500E Health indicator "Monitor Heap Utilization"
("db2.mon_heap_util") breached the "upper" alarm threshold of "95 %"
with value "124 %" on "instance" "DB2"....
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by: kenfar |
last post by:
I've got a large table on db2 8.2.1 that I rarely perform runstats on.
It has about 600 million rows organized in a single MDC time dimension
on a non-dpf warehouse.
Anyhow, we recently ran runstats on it with a 20% sampling. After this
was performed the highly selective queries using the time dimension
slowed down drastically (8000% increase in duration). Earlier today I
marked the table 'volatile' and queries went back to normal. ...
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by: db2udb |
last post by:
Hi, I have just taken over as the DBA for a database that has not had any reorgs/runstats run against it for the last three years. As a first step, I have just run reorg/runstats against the system catalog tables & rebound packages.
I next intend to reorg/runstats all the application tables that I have identified as needing this and due to the remote possibility of this causing an adverse affect on performance, it has been decided that I...
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by: Patrick Finnegan |
last post by:
Is it still necessary to do perform a bind after runstats in DB2 9?
e.g.
runstats
reorg
runstats
db2rbind
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by: Norm |
last post by:
If RUNSTATS is called directly, we can specify UTIL_IMPACT_PRIORITY to
limit CPU consumption. For automatic runstats, there is no place to
specify this paramater. Will it use the DBM value of UTIL_IMPACT_LIM?
Thanks in advance,
Norm
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by: Okonita via DBMonster.com |
last post by:
Hi all,
I am very surprised to see that after doing a Reorgchk followed by reorg of
selected tables and concluding with a runstats of the reorged tables, all of
the tables continue to be identified and selected as reorg candidates in
subsequent/followup reorgchk.
Has anyone had this experience? Can you share with me what you may have found
out to the the reason and if possible what are the possible solutions to
correct the situation?
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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...
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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: 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: 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: 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: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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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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