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Performing Rolling Restarts
Official Documentation
Performing Rolling Restarts The rolling restart cluster maintenance process involves shutting down and updating nodes one at a time (while the other nodes are running) until they're all updated....
Custom Code and Patch Compatibility
Official Documentation
Custom Code and Patch Compatibility Subscribers If you deploy code that customizes or patches your DXP 7.2 installation, you must maintain its compatibility with all patches you're using. The...
Slimming Down Patched Installations
Official Documentation
Slimming Down Patched Installations Subscribers In Liferay DXP 7.2, patch information is retained in Patch Files in the installation by default. This facilitates restoring DXP to a previous patch...
Advanced Patching for DXP 7.2
Official Documentation
Advanced Patching for DXP 7.2 Here are the DXP 7.2 advanced patching topics: Using Slim Bundles demonstrates conserving disk space by using DXP fix pack bundles that don't include Patch Files. ...
Applying a Hotfix
Official Documentation
Applying a Hotfix Subscribers A Hotfix is a fix or collection of fixes delivered between Updates (or between Fix Packs for versions before DXP 7.3 SP3) to address a customer's confirmed critical...
Using Slim Bundles
Official Documentation
Using Slim Bundles Subscribers Liferay DXP 7.2 Fix Packs and Service Packs are also released bundled with the Tomcat application server. They are available as traditional bundles and Slim Bundles....
System Properties
System Properties Liferay DXP/Portal runs in the application server's JVM. System properties can be passed directly to the JVM as arguments to java in the format -D[name1]=[value1] or can be loaded...
Database Configuration
Database Configuration By default for demonstration purposes, Liferay DXP/Portal is configured to use an embedded HSQL database. Beyond demonstration purposes, we recommend using a full-featured,...
Uninstalling Patches
Official Documentation
Uninstalling Patches Subscribers After you install a patch, you may decide to restore your installation to a previous patch level. Here you'll learn how to Uninstall Patches Revert (uninstall)...
Getting Patch Information
Official Documentation
Getting Patch Information Subscribers You can see patch information at a glance, which helps maintain your installation and get help from Liferay Support. The Patching Tool's info command lists...
Installing Patches in Earlier Versions
Official Documentation
Installing Patches in Earlier Versions Subscribers The Patching Tool applies Fix Packs (including Security Fix Packs and Service Packs) for versions prior to Liferay DXP 7.3 SP3. It also applies...
Portal Developer Properties
Official Documentation
Portal Developer Properties There are Portal Properties that facilitate development. Liferay's portal-developer.properties file includes all of them. The portal-developer.properties file is enabled...
Updating Previous Versions of Liferay
Official Documentation
Updating Previous Versions of Liferay Staying current with updates gives you the best security and quality. Security Updates are releases that address the latest security issues immediately. ...
Liferay Home
Liferay Home Liferay Home is the folder from which Liferay DXP/Portal launches applications, reads and applies configurations, loads JAR files, generates logs, and more. Liferay Home's location...
Installing the Patching Tool
Official Documentation
Installing the Patching Tool Subscribers The Patching Tool is easy to install and update. Installation Download the Patching Tool from the Customer Portal. For DXP 7.3+, download the latest...
JVM Configuration
Official Documentation
JVM Configuration As of Liferay DXP 2024.Q3+/Portal GA125+, Liferay DXP/Portal requires a Java JDK 17 or 21 (prior versions support JDKs 8 and 11) with specific JVM option settings. There are also...
Configuring Cluster Link
Official Documentation
Configuring Cluster Link Enabling Cluster Link activates distributed caching. The cache is distributed across multiple Liferay DXP nodes running concurrently. Cluster Link uses Ehcache replication....
Setting Up Liferay
Official Documentation
Setting Up Liferay After installing Liferay, configure it to meet your needs. Here are common setup tasks. Setup Tasks Preconfigure the System Activate Liferay (Subscription Required) ...
Clustering for High Availability
Official Documentation
Clustering for High Availability Liferay DXP can scale to serve everything from the smallest to the largest web sites. Out-of-the-box, it's configured optimally for a single server environment. If...
Liferay DXP 2024.Q2 Breaking Changes
Official Documentation
Liferay DXP 2024.Q2 Breaking Changes Breaking changes break or significantly alter existing functionality or code structure. Here are all of the breaking changes for Liferay DXP 2024.Q2. As the...
Using a CDN
Official Documentation
Using a CDN A Content Delivery Network (CDN) is a distributed infrastructure for caching static, file-based content. When visitors hit your site, your static content is loaded from the server...
Database Configuration for Cluster Nodes
Official Documentation
Database Configuration for Cluster Nodes At minimum, nodes in a DXP cluster must be configured to share the same database (or database cluster) in order to function. Optimizations discussed here...
Tuning Liferay
Official Documentation
Tuning Liferay There are several ways to tune Liferay's performance. This involves configuring the Java Virtual Machine and frameworks that support the Liferay application, monitoring performance...
Configuring Microsoft Office 365 with OAuth
Official Documentation
Configuring Microsoft Office 365 with OAuth Liferay DXP 7.4 U79+/Liferay Portal 7.4 GA79+ Connect your Microsoft email service to Liferay with the use of OAuth 2.0 authorization. Note, Microsoft...
Liferay DXP 2024.Q3 Breaking Changes
Official Documentation
Liferay DXP 2024.Q3 Breaking Changes Breaking changes break or significantly alter existing functionality or code structure. Here are all of the breaking changes for Liferay DXP 2024.Q3. As the...
Session Replication with Tomcat
Official Documentation
Session Replication with Tomcat Liferay DXP 2024.Q3+/Portal GA92+ To ensure user session data is synchronized across all instances in the cluster, Liferay supports session replication. If one...
Initial Instance Localization
Official Documentation
Initial Instance Localization Liferay DXP supports localization by language, time zone, and more. The English (US) language translation and GMT time zone are the defaults, but DXP has over 40...
2024 Deprecations and Breaking Changes
2024 Deprecations and Breaking Changes Liferay quarterly releases introduce new features and enhancements while phasing out older or less-used functionality. Some features move to Maintenance Mode,...
Example: Creating a Simple DXP Cluster
Official Documentation
Example: Creating a Simple DXP Cluster A fast, easy way to learn DXP clustering is to set up a two node DXP cluster environment on one machine using Docker containers. This example creates two DXP...
Maintenance Mode and Deprecations in Liferay DXP 2024.Q3
Maintenance Mode and Deprecations in Liferay DXP 2024.Q3 Features moved to Maintenance Mode or marked as Deprecated in Liferay DXP 2024.Q3 appear here. For details about these statuses and their...
Data Cleanup
Data Cleanup Before database upgrades, Liferay executes data cleanup processes to repair databases with obsolete data. This lightens the load of the upgrade tool, improving performance and reducing...
Database Tuning for Upgrades
Database Tuning for Upgrades Performing an upgrade impacts the database differently from daily running in production. Because of this, you should tune your database for the upgrade process before...
Example: Removing Intermediate Journal Article Versions
Example: Removing Intermediate Journal Article Versions These instructions and code samples demonstrate removing intermediate Journal Article versions. In the script console, you can remove...
Troubleshooting Upgrades
Official Documentation
Troubleshooting Upgrades Liferay has many out-of-the-box tools and features to identify and solve issues that may arise when performing an upgrade. To troubleshoot, you can upgrade modules...
7.2 Breaking Changes
Official Documentation
7.2 Breaking Changes This document presents a chronological list of changes that break existing functionality, APIs, or contracts with third party Liferay developers or users. We try our best to...
Maintenance Mode and Deprecations in 7.3
Maintenance Mode and Deprecations in 7.3 With each new DXP release, a feature may not warrant continued enhancements or may become obsolete. Stopping enhancements for a feature puts it in...
7.4 Breaking Changes
Official Documentation
7.4 Breaking Changes Breaking changes break or significantly alter existing functionality or code structure. Here are all of the breaking changes for Liferay 7.4, starting with the latest quarterly...
Renamed Language Keys
Renamed Language Keys In Liferay DXP/Portal 7.4, module language keys were centralized to a module called portal-language-lang. Source location: ...
Maintenance Mode and Deprecations in 7.2
Maintenance Mode and Deprecations in 7.2 With each new DXP release, a feature may not warrant continued enhancements or may become obsolete. Stopping enhancements for a feature puts it in...
Post-Upgrade Considerations
Official Documentation
Post-Upgrade Considerations After upgrading the database, you should configure Liferay for production again and check up on feature changes that might affect your Liferay instance. Re-enable...