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Introduction to Zero Downtime (ZDT) Patching for Oracle Fusion Middleware / WebLogic Server (Doc ID 1942159.1)

Last updated on JULY 06, 2018

Applies to:

Oracle Fusion Middleware - Version and later
Oracle WebLogic Server - Version 10.3.6 and later
Information in this document applies to any platform.


The purpose of this document is to describe Zero Downtime (ZDT) patching for Oracle Fusion Middleware (FMW). Zero Downtime patching for Oracle Fusion Middleware was minimally introduced in later 11g releases (10.3.6 and, mostly for products and applications deployed to Oracle WebLogic Server (WLS). It has not become standard for all FMW products until 12c Release 2 (12.2) with the new OPatchAuto feature.

For more up-to-date information, see the OPatch documentation for your specific version where the latest 12.2.1.x release will have the most updates:

<Note 1587524.1> Using OUI NextGen OPatch 13 for Oracle Fusion Middleware 12c (12.1.2+)
-- OPatch Documentation including ZDT with OPatchAuto is included within

<Note 1591487.1> Using OPatch 11.1 for Oracle Fusion Middleware 11g (11.1.1/11.1.2)
-- OPatch Documentation does not include ZDT with OPatchAuto

For any release which does not include ZDT/OPatchAuto documentation, this document provides the introduction and concept to help you apply eligible patches.


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In this Document
 Introduction to Zero Downtime Patching (ZDT) for Oracle Fusion Middleware
 Identifying a Zero Downtime Patch
 Other Patch Uptime Options
 What is a Zero Downtime Patch?
 Applying a Zero Downtime Patch
 Prerequisites and Limitations for a ZDT Patch
 HA and Cluster Configuration
 ZDT applies only to the patched Component
 Oracle Homes
 Private and Shared Oracle Homes
 Applying a patch to Fusion Middleware Applications
 Applying a ZDT Patch In-Place
 Applying a ZDT Patch Out-of-Place
 More Information on Patching

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