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by: xixi |
last post by:
hi, we are using db2 udb v8.1 on 64 bit windows, this message is in
the db2diag.log file
ADM5502W The escalation of "38200" locks on table "xxx.xxx" to lock
intent "X" was successful.
currently i have locklist = 1075, maxlock=60, so based on the formula
(((locks held * 36)/ (locklist *4096)) *100) , i have the answer is
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by: Jane |
last post by:
Our db2diag.log is full of messages like this:
2004-05-31-17.15.10.383766 Instance:tminst1 Node:000
PID:394948(db2agent (TMDB1) 0) TID:1 Appid:GA140956.EF26.03A4B1202647
data management sqldEscalateLocks Probe:3 Database:TMDB1
ADM5502W The escalation of "4759" locks on table "I2TM .SHPM_T" to lock
intent "S" was successful.
The message is always about Shared locks. What can I do to eliminate these errors?
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by: Amy Woodward |
last post by:
Does DB2 have a setting to turn off lock escalation? I've just done
several hours of newsgroup googling, and have found only a couple
references to such a setting, for DB2 v4.1 back in the late 90's.
One of our apps is (fairly) regularly grabbing table locks instead of
row locks. I've bumped maxlocks up as high as 95% with locklist at
2048 (4kB chunks). I'm only dealing with a few hundred rows of data
in my test environment. And...
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by: Trent |
last post by:
Hello, all.
I have the following production DB2 environment.
DB2 8.1.4 (fp4) WG edition with 2 production databases on Windows 2003
standard edition.
My first question is regard with locking. I found some escalations for
X lock on some tables. How do I work out an appropriate MAXLOCK &
LOCKTIMEOUT settings to optimize the lock escalation issue.
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by: kavallin |
last post by:
I receives the following in the db2diag.log file many times / day :
2007-03-05-14.55.24.836553+060 E12415C457 LEVEL: Warning
PID : 2785 TID : 1 PROC : db2agent
(dbname)
INSTANCE: db2inst1 NODE : 000 DB : dbname
APPHDL : 0-946 APPID: *LOCAL.db2inst1.070305135434
FUNCTION: DB2 UDB, data management, sqldEscalateLocks, probe:3
MESSAGE : ADM5502W The escalation of...
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by: stefan.albert |
last post by:
Hi folks,
we have a little discussion about lock escalation...
What is better for performance: To have an escalation "early" (smaller
locklist) or aviod the escalation with a big lock list?
We don't care about concurrency - because the changes have to be done,
other SQL waiting for this is OK.
Anyhow - I think: A lock table in exclusive mode would be the the most
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by: cburnett |
last post by:
Have a peculiar problem regarding lock escalation. Originally lock escalation was occurring because of an application changing most of the rows in a large table. After setting locksize to table to overcome this, still seeing periodic lock escalations (every hour or so) but only of abour 20 rows and for one application at a time. Given a 100MB lock list, why is escalation kicking in and only escalation about 2K of locks? MAXLOCKS would also...
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by: clilush |
last post by:
I'm getting entries in the windows event log saying "DB2 is performing
lock escalation" which of course is followed by another entrie saying
"The escalation of 'xxxx' locks on table 'SYSIBM .SYSCOLDIST' to
lock
intent 'X' was successful."
I'm assuming these are just warnings about the database making it's
own adjustments, but I thought I'd be sure before sweeping them under
the carpet. Any advice? (DB2 8 Workgroup Edition)
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by: Frederick Tant |
last post by:
DB2 V9.7
The DB is used by 1 application with no concurrent applications.
I got the problem that large update/insert cause lock escalation, to solve the issue I set a lock on the table so there's no row locking any more.
BUT
after setting a lock on a table (LOCK TABLE <table> IN EXCLUSIVE MODE;) I remain having the message " DB2 is performing lock escalation". This together with very bad performance.
Any sugestion why LOCK table...
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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: 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: 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: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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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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