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: Session "Waiting on a transaction"

Posted By: Frank Langelage
Date: Sunday, 23 August 2015, at 5:19 a.m.

In Response To: Re: Session "Waiting on a transaction" (Marcus Haarmann)

Hi Marcus,

no, that's not the case here. I had such a few times in the past.
But in this case the session with the global transaction appears during
deployment.
When deployment is cancelled by the WildFly instance after timeout of 5
minutes the transaction is cancelled.
The session is still there, with Y instead of T again:
1147f5268 Y--P--- 6298 mbi - 11ed60da8 0 2
0 12

Frank

On 13.08.15 21:58, Marcus Haarmann wrote:
> Hi,
>
> with XA, you might get a runaway transaction, which holds locks, but has no
> owner any more.
> We sometimes have the same situation, which mostly occurs when a JBoss/Wildfly
> server
> has to be killed because there is no reaction because of heap problems, or
> dies for some reason (JDK crash).
> It then leaves open transactions, which are never closed
> (at least not from the IDS server). Even bouncing the engine does not help.
> To avoid such situations, we have developed a script, which stops the JBoss
> server from accepting new requests
> and we shut down the server manually only when we are sure there is no running
> transaction any more.
> The latest Version 9.x has a builtin option to establish a graceful shutdown,
> I read it in the announcement.
> When you are using clustering, the availability of the Server in the cluster
> has to be purged, which results
> in no more requests arriving. In case of no clustering, an option would be to
> shut down the JNDI listener, but the problem
> is that you cannot stop the server without JNDI ...
> We are closing the Defaultpartition, which is base for Clustering, via JMX.
> (at least this is working on older versions).
>
> We have written a short java app which attaches to the runaway XA transaction
> and terminates it.
> (rather complex, internal stuff, which is rarely used in normal programming.
> But it works.).
> You can see those transactions normally by running onstat -x and you will see
> a line like:
> 268b0abe0 -T--G 0 20 ....
> The third column tells you that this transaction has no owner any more. The
> fourth column is the number of locks which
> the transaction is holding.
>
> If you are interested, I can share the code.
>
> Marcus Haarmann
>
> ----- Ursprüngliche Mail -----
>
> Von: david@smooth1.co.uk
> An: ids@iiug.org
> Gesendet: Dienstag, 11. August 2015 23:55:47
> Betreff: Re: Session "Waiting on a transaction" [35596]
>
> What does onstat -x give?
>
> Whaat does "onstat -g ses <sid>" for the session give?
>
> Use the tid from the "onstat -g ses" what does "onstat -g stk <tid>" give?
>
> Also
>
> onstat -g con
> onstat -g lmx
> onstat -s
>
> would be useful.
>
> Is the server with the issue the co-ordinator or a participant in the
> transaction?
>
> Regards,
> David.
>
>> On 11 August 2015 at 22:45 Art Kagel <art.kagel@gmail.com> wrote:
>>
>>
>> Have you tried this with native Informix two phase commit transactions (ie
>> no XA)? XA transactions carry a lot of overhead.
>>
>> Art
>>
>> Art S. Kagel, President and Principal Consultant
>> ASK Database Management
>> www.askdbmgt.com
>>
>> Blog: http://informix-myview.blogspot.com/
>>
>> Disclaimer: Please keep in mind 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 those of other individuals affiliated with any
>> entity with which I am affiliated nor those of the entities themselves.
>>
>> On Tue, Aug 11, 2015 at 3:40 PM, Frank Langelage <frank@lafr.de> wrote:
>>
>>> Hello,
>>>
>>> I'm using Wildfly application server (JEE server) together with Informix
>>> 12.10.FC5 as the database on Oracle Solaris SPARC 10.
>>> It's using distributed (XA) transaction using 2 databases on the same
>>> instance in this case.
>>> On start up the server gets stuck at some point and then prints out a
>>> transaction timeout.
>>> On the database level I see the output shown below. Note the session
>>> 3018 with flags T--P---.
>>> According to http://www.oninit.com/onstat/index.php?id=u the first flag
>>> T means: Waiting on a transaction. Can anybody explain what this means
>>> exactly?
>>>
>>> If only the wildfly10 instance database is on this Informix instance and
>>> the application database on another Informix instance or on another DBMS
>>> like Oracle the problem does not appear.
>>> I already reduced isolation level to dirty read, but this did not help.
>>>
>>> Any hints?
>>>
>>> Regards, Frank
>>>
>>> ---------------------------------
>>>
>>> IBM Informix Dynamic Server Version 12.10.FC5IE -- On-Line -- Up 27 days
>>> 23:35:43 -- 1540096 Kbytes
>>> Userthreads
>>> address flags sessid user tty wait tout
>>> locks nreads nwrites
>>> 1147e2028 ---P--D 1 informix - 0 0 0
>>> 46 500
>>> 1147e28e8 ---P--F 0 informix - 0 0 0
>>> 0 13078
>>> 1147e31a8 ---P--F 0 informix - 0 0 0
>>> 0 524
>>> 1147e3a68 ---P--F 0 informix - 0 0 0
>>> 0 4943
>>> 1147e4328 ---P--F 0 informix - 0 0 0
>>> 0 4
>>> 1147e4be8 ---P--F 0 informix - 0 0 0
>>> 0 10
>>> 1147e54a8 ---P--F 0 informix - 0 0 0
>>> 0 0
>>> 1147e5d68 ---P--F 0 informix - 0 0 0
>>> 0 0
>>> 1147e6628 ---P--F 0 informix - 0 0 0
>>> 0 0
>>> 1147e6ee8 ---P--- 9 informix - 0 0 0
>>> 0 0
>>> 1147e77a8 ---P--B 10 informix - 0 0 0
>>> 286591 576
>>> 1147e8068 Y--P--D 11 informix - 1159705d8 0 0
>>> 37637603 0
>>> 1147e8928 ---P--D 12 informix - 0 0 0
>>> 0 0
>>> 1147e91e8 Y--P--- 3012 mbi - 1181032f8 0 2
>>> 0 0
>>> 1147e9aa8 ---P--D 16 informix - 0 0 0
>>> 0 0
>>> 1147ea368 Y--P--- 3016 mbi - 1179ec6e8 0 2
>>> 0 0
>>> 1147eac28 ---P--D 17 informix - 0 0 0
>>> 2 0
>>> 1147eb4e8 ---P--D 18 informix - 0 0 0
>>> 0 0
>>> 1147ebda8 ---P--D 19 informix - 0 0 0
>>> 0 0
>>> 1147ec668 ---P--- 32 informix - 0 0 1
>>> 7037 39254
>>> 1147ecf28 Y--P--D 28 informix - 10a2ddc30 0 0
>>> 0 0
>>> 1147ed7e8 ---P--- 30 informix - 0 0 1
>>> 11 0
>>> 1147ee0a8 ---P--- 31 informix - 0 0 2
>>> 317 47207
>>> 1147ee968 ---P--- 33 informix - 0 0 1
>>> 2609 39140
>>> 1147ef228 Y--P--- 3017 mbi - 117ea8028 0 0
>>> 0 0
>>> 1147efae8 Y--P--- 2999 mbi - 1180f1348 0 1
>>> 0 0
>>> 1147f03a8 Y--P--- 3015 mbi - 11675e388 0 2
>>> 0 0
>>> 1147f0c68 Y--P--- 3014 mbi - 1162f96e8 0 2
>>> 0 0
>>> 1147f1528 Y--P--- 3019 mbi - 116fd06e8 0 2
>>> 0 0
>>> 1147f1de8 Y--P--- 2997 mbi - 116dc8778 0 1
>>> 0 0
>>> 1147f26a8 Y--P--- 2995 mbi - 1180f1978 0 1
>>> 0 0
>>> 1147f2f68 Y--P--- 3013 mbi - 1166cdd18 0 2
>>> 0 83
>>> 1147f3828 Y--P--- 3004 mbi - 117ea8e38 0 1
>>> 0 0
>>> 1147f40e8 T--P--- 3018 mbi - 114831500 0 0
>>> 0 0
>>> 34 active, 128 total, 36 maximum concurrent
>>>
>>> Sess SQL Current Iso Lock SQL ISAM F.E.
>>> Id Stmt type Database Lvl Mode ERR ERR Vers
>>> Explain
>>> 3019 - wildfly10 DRU Wait 10 0 0 9.28 Off
>>> 3018 - wildfly10 DRU Wait 10 0 0 9.28 Off
>>> 3017 SELECT neu2e_langfr DRU Wait 8 0 0 9.28 Off
>>> 3016 - neu2e_langfr DRU Wait 8 0 0 9.28 Off
>>> 3015 - wildfly10 DRU Wait 10 0 0 9.28 Off
>>> 3014 - neu2e_langfr DRU Wait 8 0 0 9.28 Off
>>> 3013 - wildfly10 DRU Wait 10 0 0 9.28 Off
>>> 3012 SELECT wildfly10 DRU Wait 10 0 0 9.28 Off
>>> 3004 - neu2e_langfr DR Wait 0 0 9.35 Off
>>> 2999 - neu2e_langfr DR Wait 0 0 9.35 Off
>>> 2997 SELECT neu2e_langfr DR Wait 0 0 9.35 Off
>>> 2995 - neu2e_langfr DR Wait 0 0 9.35 Off
>>> 33 sysadmin DR Wait 5 0 0 - Off
>>> 32 sysadmin DR Wait 5 0 0 - Off
>>> 31 sysadmin DR Wait 5 0 0 - Off
>>> 30 sysadmin CR Not Wait 0 0 - O
>>>
>>>
>>>
>>>
> *******************************************************************************
>>> Forum Note: Use "Reply" to post a response in the discussion forum.
>>>
>>>
>> --001a113ebc3c8c5e93051d1003e7
>>
>>
>>
> *******************************************************************************
>> Forum Note: Use "Reply" to post a response in the discussion forum.
>>
>
> *******************************************************************************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>
> *******************************************************************************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>

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.