Join IIUG
 for   
 

Informix News
18 Nov 13 - ZDNet - Top 20 mobile skills in demand... Read
09 Sep 13 - telecompaper - Shaspa and Tatung have shown a new smart home platform at Ifa in Berlin. Powered by the IBM Informix software... Read
06 Sep 13 - IBM data magazine - Mission Accomplished - Miami, Florida will be the backdrop for the 2014 IIUG Informix Conference... Read
01 Feb 13 - IBM Data Magazine - Are your database backups safe? Lester Knutsen (IBM Champion) writes about database back up safety using "archecker"... Read
14 Nov 12 - IBM - IBM's Big Data For Smart Grid Goes Live In Texas... Read
3 Oct 12 - The Financial - IBM and TransWorks Collaborate to Help Louisiana-Pacific Corporation Achieve Supply Chain Efficiency... Read
28 Aug 12 - techCLOUD9 - Splunk kicks up a SaaS Storm... Read
10 Aug 12 - businessCLOUD9 - Is this the other half of Cloud monitoring?... Read
3 Aug 12 - IBM data management - Supercharging the data warehouse while keeping costs down IBM Informix Warehouse Accelerator (IWA) delivers superior performance for in-memory analytics processing... Read
2 Aug 12 - channelbiz - Oninit Group launches Pay Per Pulse cloud-based service... Read
28 May 12 - Bloor - David Norfolk on the recent Informix benchmark "pretty impressive results"... Read
23 May 12 - DBTA - Informix Genero: A Way to Modernize Informix 4GL Applications... Read
9 Apr 12 - Mastering Data Management - Upping the Informix Ante: Advanced Data Tools... Read
22 Mar 12 - developerWorks - Optimizing Informix database access... Read
14 Mar 12 - BernieSpang.com - International Informix User Group set to meet in San Diego... Read
1 Mar 12 - IBM Data Management - IIUG Heads West for 2012 - Get ready for sun and sand in San Diego... Read
1 Mar 12 - IBM Data Management - Running Informix on Solid-State Drives.Speed Up Database Access... Read
26 Feb 12 - BernieSpan.com - Better results, lower cost for a broad set of new IBM clients and partners... Read
24 Feb 12 - developerWorks - Informix Warehouse Accelerator: Continuous Acceleration during Data Refresh... Read
6 Feb 12 - PRLOG - Informix port delivers unlimited database scalability for popular SaaS application ... Read
2 Feb 12 - developerWorks - Loading data with the IBM Informix TimeSeries Plug-in for Data Studio... Read
1 Feb 12 - developerWorks - 100 Tech Tips, #47: Log-in to Fix Central... Read
13 Jan 12 - MC Press online - Informix Dynamic Server Entices New Users with Free Production Edition ... Read
11 Jan 12 - Computerworld - Ecologic Analytics and Landis+Gyr -- Suitors Decide to Tie the Knot... Read
9 Jan 12 - planetIDS.com - DNS impact on Informix / Impacto do DNS no Informix... Read
8 Sep 11 - TMCnet.com - IBM Offers Database Solution to Enable Smart Meter Data Capture... Read
1 Aug 11 - IBM Data Management Magazine - IIUG user view: Happy 10th anniversary to IBM and Informix... Read
8 Jul 11 - Database Trends and Applications - Managing Time Series Data with Informix... Read
31 May 11 - Smart Grid - The meter data management pitfall utilities are overlooking... Read
27 May 11 - IBM Data Management Magazine - IIUG user view: Big data, big time ( Series data, warehouse acceleration, and 4GLs )... Read
16 May 11 - Business Wire - HiT Software Announces DBMoto for Enterprise Integration, Adds Informix. Log-based Change Data Capture... Read
21 Mar 11 - Yahoo! Finance - IBM and Cable&Wireless Worldwide Announce UK Smart Energy Cloud... Read
14 Mar 11 - MarketWatch - Fuzzy Logix and IBM Unveil In-Database Analytics for IBM Informix... Read
11 Mar 11 - InvestorPlace - It's Time to Give IBM Props: How many tech stocks are up 53% since the dot-com boom?... Read
9 Mar 11 - DBTA - Database Administration and the Goal of Diminishing Downtime... Read
2 Feb 11 - DBTAs - Informix 11.7 Flexible Grid Provides a Different Way of Looking at Database Servers... Read
27 Jan 11 - exactsolutions - Exact to Add Informix Support to Database Replay, SQL Monitoring Solutions... Read
25 Jan 11 - PR Newswire - Bank of China in the UK Works With IBM to Become a Smarter, Greener Bank... Read
12 Oct 10 - Database Trends and Applications - Informix 11.7: The Beginning of the Next Decade of IBM Informix... Read
20 Sep 10 - planetIDS.com - ITG analyst paper: Cost/Benefit case for IBM Informix as compared to Microsoft SQL Server... Read
20 Jul 10 - IBM Announcements - IBM Informix Choice Edition V11.50 helps deploy low-cost scalable and reliable solutions for Apple Macintosh and Microsoft Windows... Read
20 Jul 10 - IBM Announcements - Software withdrawal: Elite Support for Informix Ultimate-C Edition... Read
24 May 10 - eWeek Europe - IBM Supplies Database Tech For EU Smart Grid... Read
23 May 10 - SiliconIndia - IBM's smart metering system allows wise use of energy... Read
21 May 10 - CNET - IBM to help people monitor energy use... Read
20 May 10 - ebiz - IBM Teams With Hildebrand To Bring Smart Metering To Homes Across Britain... Read
19 May 10 - The New Blog Times - Misurare il consumo energetico: DEHEMS è pronto... Read
19 May 10 - ZDNet - IBM software in your home? Pact enables five-city smart meter pilot in Europe... Read
17 March 10 - ZDNet (blog) David Morgenstern - TCO: New research finds Macs in the enterprise easier, cheaper to manage than... Read
17 March 2010 - Virtualization Review - ...key components of Big Blue's platform to the commercial cloud such as its WebSphere suite of application ser vers and its DB2 and Informix databases... Read
10 February 2010 - The Wall Street Journal - International Business Machines is expanding an initiative to win over students and professors on its products. How do they lure the college crowd?... Read


End of Support Dates

IIUG on Facebook IIUG on Twitter

[ View Thread ] [ Post Response ] [ Return to Index ] [ Read Prev Msg ] [ Read Next Msg ]

IDS Forum

Re: Re: Update statistics issue

Posted By: medkba
Date: Friday, 27 June 2014, at 12:03 p.m.

In Response To: Re: Re: Update statistics issue (John Miller iii)

I have verified my environment. If I have comment these values, any impact
current system

cat onconPROD82 | grep RA_PAGES
#RA_PAGES - The number of pages, as a positive integer, to
RA_PAGES 32

cat onconPROD82 | grep RA_THRESHOLD
#RA_THRESHOLD - The number of pages, as a postive integer, left
RA_THRESHOLD 8

cat onconPROD82 | grep AUTO_READAHEAD

Thank you

On Fri, Jun 27, 2014 at 11:54 PM, John Miller iii <miller3@us.ibm.com>
wrote:

> If you would like you large tables running update statistics = low to
>
> run very fast then
>
> you need to read the link below. I= n general this makes each index
>
> which update
>
> data statistic low is run o= n take about 1 minute (unless there is
>
> great data skew).
>
> http=
>
> ://www.ibmnosql.com/2011/05/craving-a-bit-of-update-statistics-low-per
>
> forma= nce/
>
> John F. Miller III
>
> STSM, Lead Architect
>
> miller3@= us.ibm.com
>
> 503-747-1366
>
> IBM Informix Dynamic Server (IDS)
>
> <= br>-----ids-bounces@iiug.org wrote: -----
>
> >To: ids@iiug.org
>
> >From: "medkba"
>
> >Sent by: ids-bounce= s@iiug.org
>
> >Date: 06/27/2014 07:06AM
>
> >Subject: Re: Update stati= stics issue [33297]
>
> >
>
> >Yes, i have running update statistics o= ne of the database i.e. most
>
> >used the application Run UPDATE STATI= STICS LOW Ok, i will read
>
> >this article Dosstat runs weekly once T= his is new hp blade server
>
> >with 32gb memory. It means that hardware = very powerful but
>
> >statistics job running slow then the question ari= es why slow and
>
> >hard to convenience management to change different = way of running.
>
> >How do i check aus running Thank you On 27 Jun 201= 4 21:18, "Art
>
> >Kagel" <art.kagel@gmail.com> wrote: > "from= a shell script" wasn't
>
> >what I was looking for. Are you running plan= > UPDATE STATISTICS?
>
> >UPDATE STATISTICS LOW? UPDATE STATISTICS M= EDIUM? > UPDATE
>
> STATISTICS
>
> >HIGH? Combinations of multiple comman= ds? Are you > running these in
>
> >dbaccess? If so are you running a= gainst just this one > table in
>
> >each command or against the enti= re database? Are you using my >
>
> >dostats utility to generate an o= ptimal set of commands? > > OK,
>
> >first thing to do then is to= read John's paper. Link here: > > >
>
> >>
>
> >http://=
>
> www.ibm.com/developerworks/data/zones/informix/library/techart
>
> >icle/= miller/0203miller.html#section3 > > Quick-and-dirty: > >
>
> >export PDQPRIORITY=3D100 # Or as high as you dare without disrupting
>
> = >
>
> >production resource requirements. > export PSORT=5FNPROCS= =3D16 # I
>
> know
>
> >the max documented is 10, trust me. > Make sure t= hat you have lots
>
> >of memory allocated to DS=5FTOTAL=5FMEMORY to >= ; allow for all
>
> sorting to
>
> >be accomplished in memory. If you want to= know how > much memory you
>
> >will need and you haven't zero'd out= your server stats > since the
>
> >last time you tried running the u= pdate statistics (ie onstat -z) >
>
> >then the sysmaster:sysprofile = table has a row containing the size
>
> of
>
> >the > largest sort that's= been executed in KB: > > select value
>
> >from sysmaster:syspro= file where name =3D 'maxsortspace'; > > I
>
> think
>
> >that I remem= ber that you are using 11.50 so you can't take >
>
> >advantage or LO= W sampling. > > BTW, in another reply you said you
>
> >are only = runing vanilla UPDATE > STATISTICS with no modifiers. This
>
> >comma= nd does not update the data > distributions for the table, it
>
> >on= ly updates a few columns in systables, > syscolumns,
>
> sysfragments,
>
> &= gt;and sysindices/sysindexes like nrows and npused > in systables,
>
> &= gt;colmin and colmax in syscolumns, nlevels, nleaves, uniq, >
>
> clust,
>
> >and nrows in sysindices. You need to run a combination of LOW,
>
> >>MEDIUM, and HIGH on individual sets of columns to get really
>
> useful>data > distributions in minimum time. If you use my dostats
>
> utili= ty,
>
> >as do > hundreds of Informix sites, it will take care of tha= t for
>
> >you. > > BTW, have you disabled Auto Update Statistics= (AUS)?
>
> >Because if not then > AUS is running every night updatin= g stats for
>
> >you (almost as well as > dostats would) so you shoul= d not have to
>
> be
>
> >running update statistics > manually (or from c= ron) anyway. > >
>
> >Art > > Art S. Kagel, Principal Con= sultant > ASK Database
>
> >Management > > Blog: http://infor= mix-myview.blogspot.com/ > >
>
> >Disclaimer: Please keep in mind= that my own opinions are my own
>
> >opinions > and do not reflect o= n the IIUG, nor any other
>
> >organization with which I am > associa= ted either explicitly,
>
> >implicitly, or by inference. Neither do >= those opinions reflect
>
> >those of other individuals affiliated with a= ny > entity with which
>
> I
>
> >am affiliated nor those of the entities= themselves. > > On Fri, Jun
>
> >27, 2014 at 8:48 AM, medkba <= ;medkba@gmail.com> wrote: > > >
>
> Running
>
> >from cron jobs= daily from shell script > > Not using PDQPRIORITY >
>
> >>= 23 CPUs > > 8 cpu vps is used increased from 6 to 8 no
>
> improvement<= br>> > > > > Please let me if require more information
>
> >= ; > > > Thank
>
> >you very much > > On 27 Jun 2014 19:4= 3, "Art Kagel"
>
> ><art.kagel@gmail.com> wrote: > > > &= gt; > How are you running
>
> update
>
> >statistics for that table? What = environment > > > variables have
>
> you
>
> >set? Are you using PD= QPRIORITY? What engine version > > > and
>
> >edition are you u= sing? How many cores are on the machine and how >
>
> >many > >= ; > CPU VPs are configured? > > > > > > Have you rea= d
>
> John
>
> >Miller's paper in optimizing update statistics runs? > &g= t; > > > >
>
> >Art > > > > > > Art S. K= agel, Principal Consultant > > > ASK
>
> >Database Management = > > > > > > Blog:
>
> >http://informix-myview.blogspot= .com/ > > > > > > Disclaimer: Please
>
> >keep in min= d that my own opinions are my own > opinions > > > and
>
> >= ;do not reflect on the IIUG, nor any other organization with which
>
> I
>
> >= ;> > am > > > associated either explicitly, implicitly, or = by
>
> >inference. Neither do > > > those opinions reflect thos= e of other
>
> >individuals affiliated with any > > > entity wi= th which I am
>
> >affiliated nor those of the entities themselves. >= > > > > > On
>
> >Fri, Jun 27, 2014 at 3:30 AM, medkba &= lt;medkba@gmail.com> wrote: >
>
> > >
>
> > > > > > = Hi All, > > > > > > > > I am having one table and=
>
> contains
>
> >data 23326189 and taking about 15 > > mins > &g= t; > > to complete
>
> >update statistics > > > > >= ; > > > Is there any opportunities to
>
> >minimize this time? = > > > > > > > > thank you very much > > >= ; >
>
> >
>
> >> > > --001a11c35338ab010704fccc4622 > >= ; > > > > > > > > > > > >
>
> >>= ; > > > > > > > > > > > > >
>
> >*********************************************************************
>
> <= br>>********** > > > > Forum Note: Use "Reply" to post a re= sponse
>
> in the
>
> >discussion forum. > > > > > > >= > > > > > > >
>
> >--001a11c3eaaa3f037b04fccfcec4= > > > > > > > > > > > > > >= > >
>
> >> >
>
> >**************************************=
>
> *******************************
>
> >********** > > > Forum Not= e: Use "Reply" to post a response in the
>
> >discussion forum. > >= ; > > > > > > > >
>
> >--089e0158b87c65336e04f= cd0b829 > > > > > > > > > >
>
> >****=
>
> *****************************************************************
>
> >**= ******** > > Forum Note: Use "Reply" to post a response in the
>
> &g= t;discussion forum. > > > > > > --089e01182b54c587910= 4fcd123c5 >
>
> >> > >
>
> >****************************=
>
> *****************************************
>
> >********** > Forum Not= e: Use "Reply" to post a response in the
>
> >discussion forum. > &g= t; --001a1133d1e23364d104fcd1ce86
>
> >********************************=
>
> *************************************
>
> >********** Forum Note: Use = "Reply" to post a response in the
>
> >discussion forum.
>
>
>
> *******************************************************************************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>

--047d7b3a8f582cd4fe04fcd37309

Messages In This Thread

[ View Thread ] [ Post Response ] [ Return to Index ] [ Read Prev Msg ] [ Read Next Msg ]

IDS Forum is maintained by Administrator with WebBBS 5.12.