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: Ontape to backup Logical logs - Query

Posted By: Art Kagel
Date: Wednesday, 18 February 2009, at 11:39 a.m.

In Response To: Ontape to backup Logical logs - Query (VIKAS HIVARKAR)

So, to clarify, your question is "Now that ontape instances create a
uniquely named temp file, can I run multiple copies of 'ontape -a' to backup
the logs in parallel to get them on disk faster?"

I would confidently say that the answer is no. Logical log archives are
always sequential, one log at a time. A single ontape -a instance will
indeed back up all logs that are ready to back up and will indeed also pick
up logs that complete while it is running, but it's a single sequential
process.

Art

On Wed, Feb 18, 2009 at 4:57 AM, VIKAS HIVARKAR <vikas.hivarkar@gmail.com>wrote:

> Hello,
>
> IDS 11.10.FC3 on solaris 10.
>
> #Please consider this as a query and not a problem yet.
> #I know the my logical logs are small in size(500+, 20M each) for taking
> some
> hectic transactions BUT not possible to to increase the log size atleast
> for
> now.
>
> In 11.10.FC2W4 i faced a bug with parallel ontapes running for backing up
> the
> logical logs & resulting in Loss of logical logs files.
> (ontape to directory feature used. Alarmprogram.sh to backup the logs)
>
> One of the workaround was to check if ontape is running, some thing like:
> "ps -aef | grep "ontape -a -d" |grep -v grep |" in the alarmprogram.sh
> script
> before a new ontape is invoked.
>
> I did all this in order to avoid new ontape when one is already in
> progress.
>
> Now I have 11.10.FC3 with the bug fix, the first thing i checked in my
> testings was the name for temp file which now i see unique for every temp
> file
> generated/used by ontape before writing to permanent file on the disk.
>
> I also see that now IDS is not allowing another ontape to run untill one is
> already running: (May be i am not correct on this).
> ------ontape's output---------
> Performing automatic backup of logical logs.
>
> Logbackup failed - A Log backup is already in progress.
>
> Program over.
>
> Performing automatic backup of logical logs.
>
> Logbackup failed - A Log backup is already in progress.
> -----------------------------
> Thanks to detailed explanation by Martin, I understand that the ontape
> which
> is already running would backup all the logs that are filled & are
> available
> to be backed up, infact it would check if another log is near to complete
> so
> that it can also be backed up. So Every logical log file would be backed
> up.
>
> BUT it worries me when i see:
>
> 3180dd9e8 342 U-B---- 64216 5:3290053 10000 10000 100.00
> 3180dda50 343 U-B---- 64217 5:3300053 10000 10000 100.00
> 3180ddab8 344 U-B---L 64218 5:3310053 10000 10000 100.00
> 3180ddb20 345 U-B---- 64219 5:3320053 10000 10000 100.00
> 3180ddb88 346 U------ 64220 5:3330053 10000 10000 100.00
> 3180ddbf0 347 U------ 64221 5:3340053 10000 10000 100.00
> 3180ddc58 348 U------ 64222 5:3350053 10000 10000 100.00
> 3180ddcc0 349 U------ 64223 5:3360053 10000 10000 100.00
> 3180ddd28 350 U------ 64224 5:3370053 10000 10000 100.00
> 3180ddd90 351 U------ 64225 5:3380053 10000 10000 100.00
> 3180dddf8 352 U------ 64226 5:3390053 10000 10000 100.00
> 3180dde60 353 U------ 64227 5:3400053 10000 10000 100.00
> 3180ddec8 354 U------ 64228 5:3410053 10000 10000 100.00
> 3180ddf30 355 U------ 64229 5:3420053 10000 10000 100.00
> 3180ddf98 356 U------ 64230 5:3430053 10000 10000 100.00
> 3180de028 357 U------ 64231 5:3440053 10000 10000 100.00
> 3180de090 358 U------ 64232 5:3450053 10000 10000 100.00
> 3180de0f8 359 U------ 64233 5:3460053 10000 10000 100.00
> 3180de160 360 U------ 64234 5:3470053 10000 10000 100.00
> 3180de1c8 361 U------ 64235 5:3480053 10000 10000 100.00
> 3180de230 362 U------ 64236 5:3490053 10000 10000 100.00
> 3180de298 363 U------ 64237 5:3500053 10000 10000 100.00
> 3180de300 364 U------ 64238 5:3510053 10000 10000 100.00
> 3180de368 365 U------ 64239 5:3520053 10000 10000 100.00
> 3180de3d0 366 U------ 64240 5:3530053 10000 10000 100.00
> 3180de438 367 U------ 64241 5:3540053 10000 10000 100.00
> 3180de4a0 368 U------ 64242 5:3550053 10000 10000 100.00
> 3180de508 369 U------ 64243 5:3560053 10000 10000 100.00
> 3180de570 370 U------ 64244 5:3570053 10000 10000 100.00
> 3180de5d8 371 U------ 64245 5:3580053 10000 10000 100.00
> 3180de640 372 U---C-- 64246 5:3590053 10000 4107 41.07
> 3180de6a8 373 U-B---- 63661 5:3600053 10000 10000 100.00
> 3180de710 374 U-B---- 63662 5:3610053 10000 10000 100.00
> 3180de778 375 U-B---- 63663 5:3620053 10000 10000 100.00
> 3180de7e0 376 U-B---- 63664 5:3630053 10000 10000 100.00
>
> What if now the engine goes down?
>
> Sure Ontape is running and would backup all these files.
> Sure my logical log size needs to be increased atleast to 100M(i had to
> convience a lot to increase it from 5M to 20 M and still working to get it
> atleast 100M).
> Sure IDS is working as it designed to work.
>
> With the fix as unique names for temp files i was under wrong impression
> that,
> now ontape(s) now can run parallely with out over writing each others temp
> files and backup the logs, instead of one running and doing all the work.
>
> May be i'm totally wrong here hence Any information regarding this is
> appreciated.
>
> Regards,
> Vikas
>
> P.S: Better to read than to fall in guesstimation but i dont know if there
> are
> any documents released/written explaining the change made.
>
>
>
> *******************************************************************************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>

--
Art S. Kagel
Oninit (www.oninit.com)
IIUG Board of Directors (art@iiug.org)

Disclaimer: Please keep in mind that my own opinions are my own opinions and
do not reflect on my employer, Oninit, the IIUG, nor any other organization
with which I am associated either explicitly or implicitly. Neither do
those opinions reflect those of other individuals affiliated with any entity
with which I am affiliated nor those of the entities themselves.

--00163683222a81906a0463340fcb

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.