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How Oracle Recommends JDK Time Zone Patching Globally Or Per Instance (Doc ID 413318.1)

Last updated on JUNE 29, 2023

Applies to:

Oracle Containers for J2EE - Version and later
Information in this document applies to any platform.
Information in this document applies to any platform.


Q1: Per <Note 272808.1>, if JDK needs to be upgraded, which way does Oracle recommend time zone patching , globally or per OC4J instance?

It seems it should be globally, but at the same time it warns that the Application Server technology stack (Oracle Forms, Oracle Reports, Oracle Discoverer etc.) undergoes the most strenuous certification testing only with the J2SE version shipped on the product CD's. For this reason it should be considered a best practice NOT to update the java version globally or for any of the pre created OC4J instances (e.g. home,OC4J_BI_Forms,OC4J_Security etc.) unless you are in need of a specific fix included in later java versions.

Q2: Is there a test program that can be used to verify the change of time zone?

 tzupdater has a command line option for verification purposes. It would be better to have a test program to do so as well.


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