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Overview
JTZU version 1.6.11n - Refreshed 16th Dec 2011
JTZU updates the time zone information in IBM-supplied releases and service refreshes of the Java™ SDK and JRE. With this tool, you can adopt changes to DST when you are unable to apply a service refresh, or when a service refresh is not yet available that incorporates the time zone changes you need.
JTZU searches your system for IBM SDKs and JREs and updates each one found. The tool works in two modes:
- Discovery mode identifies the Java instances that need updating and produces a detailed log file, which includes the current time zone levels.
- Patch mode updates Java instances to apply the DST changes. You must stop your Java applications when this process is running.
You can use JTZU to update individual Java instances or multiple instances on local or network drives. The update process can be run automatically without user intervention, or you can control which JREs and SDKs are updated. The flexibility built in to the tool means that you can adapt the way it runs to suit your needs. For further information about downloading, installing, and using JTZU, see the Readme file.
JTZU v1.6.11n delivers time zone changes for:
- America/Goose_Bay
- America/Havana
- America/St_Johns
- Pacific/Fiji
JTZU is supported on AIX, Solaris, HP-UX, Linux, Windows, and z/OS. For more detailed information about the platforms supported and the SDKs and JREs discovered and updated by JTZU, see the Readme file.
DST changes can be applied to Java on IBM i systems using the TZUPATCH tool, which is included in the non-z/OS JTZU download package.
JTZU downloads
Before you download the code, read the license.
| Platform | JTZU download |
|---|---|
| AIX, Solaris, HP-UX, Linux, Windows and IBM i | jtzu-1.6.11n.zip |
| z/OS | jtzu-zos-1.6.11n.zip |
To see which time zone updates are included for different versions of JTZU, see Olson time zone updates for Java JRE and SDK service refreshes for IBM products
Applying IBM product maintenance that contains earlier time zone data will remove the updates applied by this tool. You must rerun this tool to restore the time zone data to the latest level.
Updates made to Java time zone data by JTZU are not managed by any of the formal change control mechanisms for servicing IBM software products.
Technical support
If you experience a problem using JTZU, check IBM Time Zone Update Utility (JTZU) known problems and diagnostic information. This document describes how to diagnose problems with JTZU and details the information that will be needed by the JTZU support team to help you.
For technical support on JTZU, including questions or feedback, send an e-mail to jtzu@uk.ibm.com. This address is monitored on weekdays during normal working hours. We aim to reply within two working days.
If you have a licence that includes product support, you can also report problems using the standard IBM product support process. You must identify the IBM product being updated when the problem occurs.
Change history
| 16 Dec 2011 | Updated 1.6.11n to fix a bug where the tool does not detect Java 6 SR10. |
| 28 Nov 2011 | Updated to 1.6.11n. |
| 27 Oct 2011 | Updated to 1.6.11m. |
| 21 Oct 2011 | Updated to 1.6.11l. |
| 26 Sep 2011 | Updated to 1.6.11j. |
| 8 Jul 2011 | Updated to 1.6.11h. |
| 6 May 2011 | Updated to 1.6.11g. |
| 13 Apr 2011 | Updated to 1.6.11f. |
| 22 Mar 2011 | Updated to 1.6.11d. |
| 11 Mar 2011 | Updated to 1.6.11c. |
| 7 Feb 2011 | Updated to 1.6.11b. |
| 3 Dec 2010 | Updated to 1.6.10o. |
| 10 Nov 2010 | Updated to 1.6.10n. |
| 02 Sept 2010 | Updated to 1.6.10l. |
| 10 Aug 2010 | Updated to 1.6.10k. |
| 02 Jun 2010 | Updated to 1.6.10j. |
| 26 Mar 2010 | Updated to 1.6.10f. |
| 26 Feb 2010 | Updated to 1.6.10b. |
| 25 Nov 2009 | Updated to 1.6.9s. |
| 10 Nov 2009 | Updated to 1.6.9p, added support for IBM i. |
| 22 June 2009 | New download page created, old page archived. |
