|End of Support Dates|
Highlights: Finally heading down under
Welcome to the International Informix Users Group (IIUG) Insider! Designed for IIUG members and Informix user group leaders, this publication contains timely and relevant information for the IBM Informix community.
The IIUG Board will be meeting at the IBM Information on Demand 2013 conference. As always it is the perfect place if you are looking for more than just Informix content. However, if you are an Informix user, besides attending the Informix sessions join us at the Informix reception held on Sunday, November 3, 2013 from 8:00 PM to 10:00 PM at the Border Grill Mandalay (950 South Las Vegas Boulevard, Las Vegas, NV 89101). We hope to see many of you there.
Finally heading down under
For almost two years I have been trying to set up a few Informix/IIUG one-day events in Australia and New Zealand and we are finally doing them. Jerry Keesee (World Wide Director of IBM Informix Software) will be joining me on a three city tour in Sydney (November 19), Melbourne (November 20) and Auckland (November 22). At these three one-day events we will be joined by some great speakers. There is no fee for attendance but we do ask you to sign up. For more details and the exact locations, visit www.iiug.net/ausnz.
I hope many of you can make it!!
IIUG 2014 Call for Presentations is now open
The IIUG Conference Planning Committee is proud to sponsor the 2014 IIUG Conference. We are currently accepting presentation proposals for the conference which is to be held April 27 - May 1, 2014 at the JW Marriott Miami, Florida, USA.
Do you have experience with Informix or Informix related products? Do you have real case studies related to Informix solutions? Have you discovered any Informix hints or tips? Are you interested in sharing your Informix knowledge and skills with the Informix User community? If the answer is yes to any of these questions the IIUG Conference Committee invites you to submit a proposal to speak at the 2014 Conference. Now we ALL could answer "YES" to any of the above questions. But few of us will submit a proposal for a session. Why not? Do we think that everybody already knows what we know? Or that nobody would be interested in what we have to say? The conference committee has been brainstorming this for years: How can we attract more speakers from the Informix User community? What will motivate a member of the Informix family to volunteer to speak at the conference, and thus "give back" to the community? While we do offer incentives in the form of waived conference fees and the like, nowhere in the definition of "volunteer" does the word "compensation" appear, unless it is preceded by "no." So what can we do to motivate YOU to speak this time around?
As we go about our daily routines, and our not so routine routines, there are tasks that we perform that are very similar to those that many other folks do. But we all must admit that personally we feel that "our way" of performing these tasks is better than "yours." You know this is true! Show us! Your presentation doesn't have to be an all day dissertation either. We have all been in enough technical sessions to realize that if the topic is good, questions and discussion will always more than fill the allotted time slots, which are usually about an hour.
The 2014 Conference will be comprised of three days of technical/user sessions, a series of hands-on-labs and one day of comprehensive tutorials intended to reinforce the power of Informix. Presentation proposals should be brief, highlighting the Informix technical solutions, real world experiences or trade tips you will include in your presentation. Multiple presentations are encouraged. Speaker guidelines can be found at www.iiug2014.org/speakers.
As in the past, conference speakers (non IBM employees) are provided with a complimentary pass providing access to conference sessions, meals and conference related networking events. Use www.iiug2014.org/speakers to register your proposal.
The deadline for submitting 2014 IIUG Conference proposals is November 20, 2013. For your convenience, speaker logins have been retained for those who submitted a 2013 IIUG Conference proposal. Please submit your proposal and biography today for consideration.
See you in Miami!
Special Note from the IIUG President: At this time all we are looking for is an idea and simple abstract of your presentations. Draft and final presentations are not due until much later in the process in early 2014. So at this time, it is simple, all you need is a good idea, a few simple sentences about that idea and a short bio on you as the speaker. If you feel unsure on what to present or how to present, drop me an email at email@example.com and I personally will work with you and if you wish, I will even get up and do the actual presentation with you at the conference (provided I understand the topic).Informix events at the Information on Demand Conference 2013 Global Conference
Here is the list of Informix events at IOD 2013. Please click on the link (next to the event name) to know more details and to register for the event.
Hurry, seats are filling up fast. Looking forward to your participation.
New in developerWorks
Compare the Informix Version 12 editions
01 Oct 2013
For more information go to: developerWorks - Informix
Big Data and working with what you have
Monitor Resource Contention
Two new onstat commands introduced in 12.10.xC2 to view the dependencies between blocking and waiting threads. A running threads take ownership of various objects and resources; for example, buffers, locks, mutexes, decision support memory etc. Contention for these resources among hundreds or thousands of threads can result in chains of dependencies.
Now, you can use the 'onstat -g bth' command to display the dependencies between blocking and waiting threads. Next, use the 'onstat -g BTH' command to display session and stack information for the blocking threads.
Here is a scenario where these onstat commands can be helpful. It possible a thread that is blocked waiting to enter a critical section might own a row lock for which another thread is waiting. The second thread might be blocking a third thread that is waiting in the MGM query queue. Usually, the duration of such contention is short and user never notice any problem. However, if a thread is blocked long enough, you might need to identify the source of the contention. The 'onstat -g bth' command discovers the chains of dependency and displays blocker threads followed by waiting threads, in order.
The following is a sample output of the 'onstat -g bth' command where multiple threads are waiting on resources.
Run 'onstat -g BTH' for more info on blockers.
In the above example, four threads are waiting for a lock that is owned by thread 49. However, that's not the actual problem. The thread 49 is waiting for MGM resources that are owned by thread 48. So, originally problem started with the thread 48. Next, run the 'onstat -g BTH' command to see the session and stack information of thread 48. Following is the example for 'onstat -g BTH' output:
- Sanjit Chakraborty
IBM Informix home page Informix blogs and wikis
I am trying something new on this section. I will first mention the blogs and wikis that have been updated during the last month. Blogs and wikis that have not been updated for over 6 months will be removed.
Blogs and Wikis that have been updated during the last month
More Blogs and Wikis
Forums, groups, videos, and magazines
There is now an Informix group on LinkedIn. The group is called "Informix Supporter", so anyone loving Informix can join, from current IBM employees, former Informix employees, to users. It will also be a good occasion to get in touch with others or long-time-no-seen friends. If you fancy showing the Informix logo on your profile, join.
The International Informix Users Group (IIUG) is an organization designed to enhance communications between its worldwide user community and IBM. The IIUG's membership database now exceeds 25,000 entries and enjoys the support and commitment of IBM's Data Management division. Key programs include local user groups and special interest groups, which we promote and assist from launch through growth.
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