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Portal Best Practices
This article is a legacy article. It applies to previous versions of the Liferay product. While the article is no longer maintained, the information may still be applicable. The...
Upgrade Process properties are not needed anymore
Prior to Liferay Portal 6.1, the upgrade process required that "upgrade.process" property to be set in the portal-ext.properties. For example, consider an upgrade from Liferay Portal 5.2 to Liferay Portal 6.0...
Self-Diagnose the Structural Issues in Custom JAR
This article documents how to self-diagnose the structural issues in custom jars. There are different types of structural issues in custom jars, and this is a general guideline for developers to troubleshoot the structural...
Liferay Portal Database Portal Properties
This article is intended to provide a list of all of the Liferay Portal Database properties that can be used to connect your portal to various databases. To use any of them, un-comment the block of...
Liferay Upgrades: Updating Custom Plugins
The following article describes how to update plugins to be compatible with a new version of the Liferay platform. Resolution The Liferay API may change from release to release, causing issues when trying to port...
Setting Up Liferay Portal Using Oracle Databases
Liferay Support does not recommend or endorse specific third-party products over others. Liferay is not responsible for any instructions herein or referenced regarding these products. Any implementation of these...
UDP Multicast Protocols and Firewalls
This article is designed to help system administrators troubleshoot a Liferay DXP instance deployed in a clustered environment. Some issues may arise because of too restrictive firewall settings (most, if not all, systems...
Setting Up and Configuring MySQL Database With Liferay Portal
This article will help users by providing instructions for setting up MySQL on your machine, creating a new database, and then connecting Liferay Portal to that database. Resolution...
Issues With Setting Time Zone Settings on the JVM Level
Liferay Support does not recommend or endorse specific third-party products over others. Liferay is not responsible for any instructions herein or referenced regarding these products....
Creating a Backup/Disaster Recovery Environment for Liferay Portal
This article gives an overview of a backup/disaster recovery environment that is necessary when starting a Liferay Portal project. This backup will often be referenced by Liferay Support Engineers as it is...
Apache Tomcat Security Advisory: CVE-2018-1336
General Information CVE-2018-1336 reports that, "an improper handing of overflow in the UTF-8 decoder with supplementary characters can lead to an infinite loop in the decoder causing a Denial of Service." This...
Understanding Languages in Liferay Portal
Liferay Portal is designed to handle as many languages as you want to support. This is done by pulling out all language specific text and storing it in the language.properties files....
Stopping Liferay DXP 7.0 LPKG Modules
This article documents which LPKG files can be disabled with little or no negative effects as part of Liferay's introduction of modularity in Liferay DXP 7.0. Because certain core functionalities have been turned into...
Avoiding a Batch Error When Defining Friendly URLs
This article is a legacy article. It applies to previous versions of the Liferay product. While the article is no longer maintained, the information may still be applicable. If you...
Deploying the Liferay Platform on WebSphere Network Deployment Edition
This article documents how to deploy Liferay Portal 6.2 or Liferay DXP (7.0 or 7.1) on WebSphere Application Server with Network Deployment (commonly abbreviated ND). The Network Deployment Edition is a tool that...
Setting Up the Liferay Platform on Microsoft Azure
This article outlines what Microsoft Azure is, how to create a Virtual Machine (VM) to run on the Liferay platform and how to configure the Liferay platform with Azure. Resolution What is Azure? Microsoft Azure is a...
Upgrading to Permission Algorithm 6
This article is a legacy article. It applies to previous versions of the Liferay product. While the article is no longer maintained, the information may still be applicable. Permission algorithm 5 was used as the default...
Liferay server is not reachable with the error "HTTP 404" on the browser
Issue When accessing the server on the browser, the server is unreachable with the error HTTP 404 and the following error is observed on the Liferay logs. ERROR...
Important Changes in Fix Pack Release Notes
Issue Some fix packs cannot be reverted or may have hard limits on which versions that the patch level can be reverted to. The reason why a rollback option is unavailable is due to database schema updates, plugin updates,...
Why is the server now timing out users after 15 minutes instead of 30?
Issue After updating past de-68 for Liferay DXP 7.0 or past dxp-5 for Liferay DXP 7.1 users are now timing out after 15 minutes. Environment Liferay DXP 7.0 using the Tomcat application server Liferay DXP...