SUPPORT COMMUNICATION -
CUSTOMER NOTICE
HP-UX - Impact of 2007 U.S. Daylight Saving Time changes
NOTICE: The information in this document, including products and software versions, is current as of the Release Date. This document is subject to change without notice.
DESCRIPTION
Beginning 11 March 2007, Daylight Saving Time (DST) start and end dates for the United States will transition to comply with the Energy Policy Act of 2005. Under the new law, Daylight Saving Time will begin on the second Sunday of March and end the first Sunday of November, extending the timeframe by four weeks.
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2006
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2007
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U.S. DST Start
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U.S. DST End
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U.S. DST Start
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U.S. DST End
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First Sunday in April
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Last Sunday in October
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Second Sunday in March
(3 additional weeks)
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First Sunday in November
(1 additional week)
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2 April 2006
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29 October 2006
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11 March 2007
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4 November 2007
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Due to this DST change, operating system and application software updates may be required to ensure that the system clock on HP products is accurate.
This is not unique to HP products. All devices that automatically adjust for Daylight Saving Time, and support operating systems or software relying on a local time zone that observes DST, will be affected by the 2007 DST change. Any application which uses US time zone information will be impacted during the additional weeks of extended US Daylight Saving Time.
The typical scenarios and operations that will produce incorrect results are:
- Time format and display
- Time zone name display
- Operations that check whether a particular date is in Daylight Saving Time
- Computations and/or business logic based on Daylight Saving Time
- Any of the above that run on a system on which time is set to a time zone other than the US time zone, but does computations based on a U.S. time zone
Several countries besides the United States of America are also implementing the same DST change (Canada, Bermuda), and other countries are expected to make similar changes. For a complete listing World Wide Daylight Saving time schedule and which countries are changing DST schedules along with the U.S. refer to
http://webexhibits.org/daylightsaving/g.html
.
This document outlines patches needed for Hewlett-Packard HP-UX products. Information on the U.S. 2007 Daylight Saving Time Changes for other HP products not listed in this communication can be found at
http://www.hp.com/go/dst
.
DETAILS
Businesses and individuals whose environments are sensitive to date and time transactions and utilize a local time zone may be impacted by changes in the Daylight Saving Time rules. Some applications perform date and time manipulation and may make automatic decisions based on Daylight Saving Time rules.
Some of the updates have been available for some time while some were recently posted. HP recommends customers perform a system assessment to understand what updates may still need to be installed by March 11th to allow for the automated adjustments for the Daylight Saving Time changes to occur.
HP-UX 11i v3 will fully support the 2007 U.S. Daylight Saving Time requirements for U.S. systems at time of release (currently scheduled for early 2007).
Patches and documentation can be found at the HP IT Resource Center.
For older HP-UX systems in the United States, Mexico and Canada the following patches should be applied prior to March 11, 2007.
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OS
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Patch ID
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Document ID
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11.00
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PHCO_35991
PHCO_35991 supersedes PHCO_34673 and PHCO_34266
PHCO_34266 is the minimum patch level required to support the 2007 U.S. DST changes for U.S. systems
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8606475843
8606411457
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11i v1
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PHCO_35989
PHCO_35989 supersedes PHCO_34668 and PHCO_34342
PHCO_34342 is the minimum patch level required to support the 2007 U.S. DST changes for U.S. systems
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8606471561
8606429356
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11i v2
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PHCO_35990
PHCO_35990 supersedes PHCO_34669 and PHCO_34375
PHCO_34375 is the minimum patch level required to support the 2007 U.S. DST changes for U.S. systems
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8606471985
8606429357
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11i v3
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PHCO_35992
HP-UX 11i v3 will support the 2007 U.S. DST changes for U.S. systems at the time of release. PHCO_35992 is the minimum patch level required to support the 2007 U.S. DST changes for systems in Mexico & Canada
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8606471986
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The 11i v3 patch (PHCO_35992) will be available at the time of the 11i v3 product release.
For obsolete versions of HP-UX please refer to HP IT Resource Center and search for Doc ID HPDST002.
NOTE: PHCO_34668 s700_800 11.11 tztab(4) cumulative patch – is included in the December 2006 11.11 Quality Pack patch bundle and is loaded on all factory ignited 11.11 systems. PHCO_34669 s700_800 11.23 tztab(4) cumulative patch – is included in the September 2006 11.23 Quality Pack patch bundle and is loaded on all factory ignited 11.23 systems.
Both Quality Packs may be downloaded from the IT Resource Center at the following web page:
http://itrc.hp.com/service/patch/releaseIndexPage.do?BC=main|bundle
.
In addition to the Operating System patches, refer to the following HP-UX product table for additional DST impact information.
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Product Name
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Additional Impact beyond OS patches
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Utility Metering
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No additional impact.
Relies on updated JAVA 1.5
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Ignite-UX
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Supports the 2007 U.S. Daylight Savings Time changes with version C.7.1.
For HP-UX systems running 11.00, 11i v1 and 11i v2 install the HP-UX patches described above.
For HP-UX version11i v3, Ignite-UX C.7.1 will be available for download beginning February 23, 2007.
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System Management Homepage
HP WBEM Services
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No additional impact.
Relies on Tomcat and updated JAVA 1.5.
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VSE Management Software
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VSE is dependent on Java and HPSIM and the Operating System patches.
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Process Resource Manager (PRM)
Workload Manager (WLM)
Workload Manager Toolkits (WLMToolkits)
Workload Manager Utilities (WLMUtilities)
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PRM/WLM requires version 3.0 or newer.
If running the PRM GUI from HP SIM included in the PRMSIMTools bundle, please follow HP SIM instructions to address the 2007 Daylight Savings Time change.
WLMToolkits have no additional impact.
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Serviceguard
Serviceguard for Linux
Serviceguard Quorum Server
Serviceguard extension for RAC
Enterprise Cluster Master Toolkit
Metrocluster
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No additional impact.
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Continentalclusters
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Requires A.06.00 or newer
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Serviceguard Manager
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Requires A.05.01 or newer
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Perl
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The perl product that is delivered with the HP-UX Operating Environments and Application Release is not affected by the Daylight Savings Time change.
One of the perl modules "DateTime::TimeZone", is affected. Please note that this module is not available in the perl product available on the OE, AR and web for HP-UX. Any user using this module will need to ensure that the version 0.59 of the module is used for the Daylight Saving Time change fix. This module contains sub-modules for handling region and country specific timezones.
The repository can be accessed using the
ppm
command (available under /opt/perl_32/bin and /opt/perl_64/bin) from any machine with the perl bundle installed. This command provides a
ppm
prompt.
To install the above module, enter
install DateTime-TimeZone
from this ppm prompt.
If a module's sources are got from the OpenSource (for example, CPAN - http://www.cpan.org/), then they need to be compiled before the module can be used.
PPM stands for "Programmer's Package Manager". It is a repository of pre-compiled binaries of the perl module for installation on HP-UX IA and PA boxes. On installation of modules from this repository, no compilation is needed.
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SecurityConfig
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No additional impact.
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SecPatchChk
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No additional impact.
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hpuxTomcat
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Requires updated Java 1.5
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ISEE
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ISEE Client software impacted:
- OpenVMS for Alpha ISEE Client A.03.95.030
The following ISEE Client software requires updated Java (see the Java website described below) but has no additional impacted:
- HP-UX on Integrity ISEE Client A.03.95.500.2
- HP-UX on PA-RISC ISEE Client A.03.95.500.32
- Red Hat Linux 7.1, 7.2, 8.0 AS 2.1. 3.0 4.0 and ES 2.1. 3.0 4.0 ISEE Client A.03.95.500.24
- OpenVMS on Integrity ISEE Client A.03.95.032
- Tru64 Unix 4.0F-5.1F ISEE Client A.03.95.020
- HP-UX 11.0 and 11iv 1.0 (11.11) VAEH Component 1.02.01
- HP-UX 11iv2.0 (11.23 ia64) VAEH Component 1.02.02
- MS Windows VAEH Component 1.02.01
- Red Hat Linux 7.1 or 7.2 VAEH Component 1.02.01
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OTS 32070B, J2160B & FTAM B1033B,J2163B
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No impact
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HP Systems Insight Manager
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Requires version 5.1
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HP C/aC++ Developer's Bundle
There are impacts to time-sensitive applications written in C++ that make use of the time functions in the C++ libraries, librwtool and lib++.a. The compilers themselves are not time-sensitive. Contact the provider of your time-sensitive applications to determine how they will accommodate the DST rules change. If you have internally developed applications, please refer to the
http://www.hp.com/go/c++
webpage for the latest information HP aC++ DST information.
DCE
DCE will address the 2007 DST issue in the HP-UX 11i v3 release.
These changes only affect customers who use DCE Distributed Time Service (dtsd).
Customers who use XNTP for time synchronization do not need to install any DCE patches.
For older HP-UX systems running DCE in the United States, Mexico and Canada the following patches should be applied prior to March 11, 2007.
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OS Version
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Patch ID
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Document ID
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11i v1
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At the time of this notice the 11.0 DCE patch was still under development. Check back for updates for the patch id and time of delivery to the HP IT Resource Center
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8606430960
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11i v1
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PHSS_36004
PHSS_36004 supersedes PHSS_35467
PHSS_35467 is the minimum patch level required to support the 2007 U.S. DST changes for U.S. systems
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11i v2
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PHSS_36005
PHSS_36005 supersedes PHSS_35466
PHSS_35466 is the minimum patch level required to support the 2007 U.S. DST changes for U.S. systems
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The DCE patches will be available from the HP Response Center by February 16 2007 and will be available for general download by March 05 2007.
For obsolete versions of HP-UX running DCE please refer to HP IT Resource Center and search for Doc ID HPDST002.
HP-UX Service Control Manager
Please contact your HP Response Center
HP VERITAS Volume Manager Storage Administrator
For details on updating HP/Symantec products for 2007 U.S. Daylight Saving Time changes, please refer to
http://support.veritas.com/docs/286461
.
Note that the instructions in the Symantec documentation pertain to version 3.5. Product versions older than 3.5 are exposed to other DST-related issues and require an upgrade to version 3.5 before following the instructions in this document.
Hardware Platforms Affected: Integrity Servers, HP 9000 Servers
Components Affected:
Not Applicable
Operating Systems Affected: Not Applicable
Software Affected: Not Applicable
Third Party Products Affected:
Java
Support Communication Cross Reference ID: IA00832124
REVISION HISTORY
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Document Version
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Release Date
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Details
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1
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December 2006
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Original document release
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2
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January 2007
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Updated Java text and link
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3
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February 2007
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Updated information regarding Mexico & Canada
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4
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February 2007
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c++ URL correction
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5
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February 2007
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minor text corrections
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©Copyright 2007 Hewlett-Packard Development Company, L.P.
Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein. The information provided is provided "as is" without warranty of any kind. To the extent permitted by law, neither HP or its affiliates, subcontractors or suppliers will be liable for incidental,special or consequential damages including downtime cost; lost profits;damages relating to the procurement of substitute products or services; or damages for loss of data, or software restoration. The information in this document is subject to change without notice. Hewlett-Packard Company and the names of Hewlett-Packard products referenced herein are trademarks of Hewlett-Packard Company in the United States and other countries. Other product and company names mentioned herein may be trademarks of their respective
owners.
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