|
by: Greg Stark |
last post by:
This query is odd, it seems to be taking over a second according to my
log_duration logs and according to psql's \timing numbers. However explain
analyze says it's running in about a third of a second.
What would cause this? Is it some kind of postgresql.conf configuration
failure? I have the same query running fine on a different machine.
QUERY PLAN...
|
by: Ina Schmitz |
last post by:
Hello all,
I don't succeed in displaying the explain plan. I use IBM DB2 Universal
Database 8.2.
I tried to do the example given in the online help for "Visual Explain".
The tables EXPLAIN_STATEMENT and EXPLAIN_INSTANCE exist. With VESAMPL.DDL, I
loaded the predefined execution plans.
In the next step, I'ld like to display the loaded access plans. So, I right
clicked on "Show Explained Statements History" and got the result:
|
by: Jon Lapham |
last post by:
I have been using the EXPLAIN ANALYZE command to debug some performance
bottlenecks in my database. In doing so, I have found an oddity (to me
anyway). The "19ms" total runtime reported below actually takes 25
seconds on my computer (no other CPU intensive processes running). Is
this normal for EXPLAIN ANALYZE to report a total runtime so vastly
different from wall clock time?
During the "explain ANALYZE delete from msgid;" the CPU is...
|
by: marklawford |
last post by:
Not having earned my DBA badge from the scouts just yet I'm a little
lost with an error I'm getting.
We've just upgraded our development database from 7.2 to 8.2 as the
first step in upgrading our wider environment. Of course, development
doesn't stop so I'm running some explain plans over some new views. The
problem is, when the view is accessed as part of the explain plan
script, the following error is returned.
|
by: JAW |
last post by:
This plan seems like it should perform well. Does anyone see anything.
SQL Statement Text:
DECLARE MTR - RDG - EST - CSR CURSOR
FOR
|
|
by: jfnorris |
last post by:
I'm having some difficulty with Visual Explain. When I explain reletively simple sql, VE will generate an access plan. If I try to explain sql with several joins both outer and inner, or anthing more complicated, the tool will act like it's processing the sql but does not generate the access plan. No errors or anything. Any Ideas?? Thanks in adavnce.
|
by: kabotnet |
last post by:
Hi,
I'm new in db2, I'm trying to execute EXPLAIN command on some queries
but i have error like:
And message similar to: Token EXPLAIN is not valid, valid tokens ( END
GET SET CALL DROP FREE HOLD LOCK OPEN WITH ALTER.
I've created tables explain_*
How can I start to find solution? Is it possible that my db2 doesn't
support explain?
|
by: skaushik |
last post by:
Hi all,
I was working on a SQL query where a history table is joined with a small table to get some information. There is an index on the history table column but the explain plan tells that there is a full table scan on both the tables. The query and the explain plan is below
select * from history_table ht, small_table st
where ht.columnA > st.columnB
and sysdate between st.datetime1 and st.datetime2;
Operation Object...
|
by: raviva |
last post by:
Hi,
I want the explain plan. But when I clicked on the explain plan it says ORA-02404: specified plan table not found. I investigated on net and some books. I was asked to load the utlxplan.sql. I did that but of no use. I also changed the name of the plan table in TOAD, still no use. New thing I heard recently is to run TOADPREP.SQL. But this script is not available on our server($ORACLE_HOME/rdbms/admin). Can someone please suggest me what...
|
by: db2admin |
last post by:
hello,
I have compressed table 442992 rows and when i run explain plan on
this table for some SQL using this table, i see table scan and
cardinality on top of table node as 18458. I am new to compression and
do not understand why cardinality is not the actual number of rows but
18458.
here is the piece of explain plan. table ABC.XYZ is the table i am
talking about ( right most in plan )
|
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: 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,...
|
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,...
|
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: 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...
|
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...
|
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: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
|
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...
|