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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
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14 Nov 12 - IBM - IBM's Big Data For Smart Grid Goes Live In Texas... Read
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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
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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
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26 Feb 12 - BernieSpan.com - Better results, lower cost for a broad set of new IBM clients and partners... Read
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13 Jan 12 - MC Press online - Informix Dynamic Server Entices New Users with Free Production Edition ... Read
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8 Sep 11 - TMCnet.com - IBM Offers Database Solution to Enable Smart Meter Data Capture... Read
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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
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20 Sep 10 - planetIDS.com - ITG analyst paper: Cost/Benefit case for IBM Informix as compared to Microsoft SQL Server... Read
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End of Support Dates

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March 2007 Daylight Savings Time Change Information

The US Congress changed the dates when daylight saving time starts and ends with effect from March 2007. The time zone issue affects the US and Canada primarily - other regions of the world secondarily. This page provides "unofficial and without warranty" general information, as well as links to IBM sites.

In a nutshell, the time change affects IDS versions 9.4 and 10.00 for Linux, UNIX, and Windows. IDS 10 and 9.4 will have fixpacks available for download in Dec., or customers may choose to use the JZTU utility provided by IBM on the supported platforms. IDS 7.31 is not impacted.

PUBLIC LAW 109.58.AUG. 8, 2005

SEC. 110. DAYLIGHT SAVINGS.

(a) AMENDMENT..Section 3(a) of the Uniform Time Act of 1966 (15 U.S.C. 260a(a)) is amended.

    (1) by striking ..first Sunday of April.. and inserting ..second Sunday of March..; and

    (2) by striking ..last Sunday of October.. and inserting ..first Sunday of November...

(b) EFFECTIVE DATE..Subsection (a) shall take effect 1 year after the date of enactment of this Act or March 1, 2007, whichever is later.

(c) REPORT TO CONGRESS..Not later than 9 months after the effective date stated in subsection (b), the Secretary shall report to Congress on the impact of this section on energy consumption in the United States.

(d) RIGHT TO REVERT..Congress retains the right to revert the Daylight Saving Time back to the 2005 time schedules once the Department study is complete.

Preliminary Analysis

The date (2005-08-08) was when Bush signed it into law. Item (b) therefore places it at the later of 2006-08-08 and 2007-03-01, which means it takes effect in March 2007.

IDS (all versions) relies on the o/s for its local time in the main code, so the primary requirement is that the o/s respond to the changes (an update in the files describing time zones - if you are lucky), and secondarily that IDS is aware of the changes. The reliable way of doing that is to restart IDS after the o/s time zone information is updated. If you are lucky, the system may detect the changes on the fly and resynchronize, but I'd not bet on it.

There is a secondary area of concern with IDS 9.x and later, namely the JRE bundled with IDS as part of Krakatoa. It seems that the time zone information used by Java is embedded indelibly into the JRE, and it is hard to update it without updating the whole JRE. Add to the problem that some IDS 10.00 versions of IDS were released with IBM Hursley JREs and others (eg Solaris, IIRC) were released with native (non-Hursley) JREs because of availability issues and time pressures for the release, and we have to re-release a number of platforms with a different JRE. Further, said re-released versions will have to be installed and brought up. If you don't do date-time calculations in Java stored procedures, or logging, or any other similar activity, then the chances are you won't notice the problem. If you do time-based calculations in Java in the Server (Krakatoa), then you are vulnerable to the existing JRE not recognizing the new rules for changing time zones. Note, incidentally, that the master database for many people is the Olson database, and release 2006o (the 15th version in 2006) was recently released. That's a measure of how often details change worldwide - and it isn't much more active this year than in previous years, though it probably is a bit more active than usual.

Someone in product management would have to pontificate on release versions and dates (Editor's note: see IBM Flash Alert), but my understanding is that 10.00.xC6 due out late in 2006 will be fixed. It is not clear to me what is happening for IDS 9.40. The Cheetah version will be fixed by the time it is released GA (it most likely is fixed in Beta 1, but I don't know that for certain).

For systems with an IBM Hursley JRE, there is a utility (called JTZU or thereabouts) that changes the time zone data without mandating a reinstall of the JRE. However, it would still be advisable to restart IDS after running that. Those systems are AIX and Linux, I believe.

07 November 2006 - Jonathan Leffler