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TSLTZ (TIMESTAMP WITH LOCAL TIME ZONE) Data and DST Updates (Doc ID 756454.1)

Last updated on MARCH 15, 2024

Applies to:

Oracle Database - Enterprise Edition - Version 9.0.1.0 to 11.2.0.2 [Release 9.0.1 to 11.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.

Purpose

Explain why TSLTZ (TIMESTAMP WITH LOCAL TIME ZONE) data may need to be checked manually when applying a RDBMS DST patch.

Scope

Anyone applying an Oracle RDBMS DST patch and has TSLTZ (TIMESTAMP WITH LOCAL TIME ZONE) data.

Used abbreviations: TZ: TimeZone , TSTZ: TimeStamp with Time Zone , TSLTZ: TimeStamp with Local Time Zone

Details

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In this Document
Purpose
Scope
Details
 1) How to find TSLTZ (TIMESTAMP WITH LOCAL TIME ZONE) data in your database?
 2) How is TSLTZ stored in the Oracle Database?
 3) When will TSLTZ data be correctly stored?
 4) When will TSLTZ data be incorrectly stored?
 5) How to know if TSLTZ data is wrong?
 6) Do I need to export/import or save TSLTZ as varchar2 (like TSTZ data) during DST updates ?
References

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