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Migrating Tag Sets During the Upgrade Process From Liferay Portal 5.2 to 6.0
Legacy
This article outlines the changes to Tags and Tag Sets between Liferay Portal 5.2 to Liferay Portal 6.0, and later versions. Specifically: The changes to the Tags Navigation Portlet (Where Did Tag Sets Go?) How to...
Exporting Liferay's Database Schema on Oracle
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In the course of investigating a Liferay platform issue, you may be instructed by Liferay Support to export your database schema in Oracle. The following article contains guidelines...
UDP Multicast Protocols and Firewalls
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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...
Liferay Upgrades: Updating Custom Plugins
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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...
Liferay DXP 7.1 Database Portal Properties
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This article is intended to provide a list of all the Liferay DXP 7.1 database properties that can be used to connect your DXP 7.1 installation to various databases. To use any of them, uncomment the block of code you...
Liferay Portal Database Portal Properties
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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...
Poor Performance in DB2 When Executing SQL Queries Over Big Tables Filtering by a Column With a Non-Unique Index
Legacy
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...
IP Geocoder Temporarily Loss of Connectivity
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Due to a recent CDN outage, the IP Geocoder module inside Liferay Digital Experience Platform (DXP) 7.0 temporarily lost Internet connectivity; the module requires an active connection to function. There is a console...
Ehcache Configuration for Different Versions of the Liferay Platform
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This article outlines Liferay configurations for distributed caching along with how to deploy custom tuning configurations. For cache tuning and finding optimal settings for a particular environment, please see the...
Changes in Enabling serviceLocator Calls in Liferay DXP 7.0
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This article documents a change in where to define serviceLocator properties in Liferay platforms; both in Portal and Digital Experience Platform (DXP). Developers familiar with this functionality in Portal 6.2 can...
Apache Tomcat Security Advisory: CVE-2018-1336
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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...
Disabling Specific Built-In Portlets
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Liferay comes equipped out-of-the-box with a variety of portlets that users may add to their page. For various reasons, however, an administrator may wish to remove some of these...
Before Opening a Portal Deployment Ticket
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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 following article outlines a short...
Apache Struts 1 Known Vulnerabilities
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QUESTION: How are Liferay DXP 7.0 and 7.1, and Liferay Portal, affected by the following vulnerabilities? CVE-2016-1181: Arbitrary code execution, denial of service CVE-2016-1182: XSS and denial of service...
DLFileRank Causes Deadlock or SQL Update Batch Errors
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With DLFileRank enabled, Deadlock or SQL Update Batch Errors may happen due to DLFileRank updates. When using DLFileRank, unique constraints can be found due to the amount of writes...
Structures With Duplicate Element Names Fail DDM Verification When Upgrading
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This article documents a known issue in which structures with duplicate element names fail Dynamic Data Mapping (DDM) verification when upgrading from Liferay Portal 6.1 to Liferay Portal 6.2 or Liferay Digital...
Upgrading to Liferay Portal 6.1 EE GA1
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When upgrading to the latest version of Liferay Portal, there are many things to take into account. This guide is designed to assist in the upgrading process. Please read and ensure...
SQL Exception Warnings Appear During DXP Upgrade Indicating 'Fallback to recreating the table'
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This article documents a false negative warning message that can occur when upgrading your Liferay platform, and which has caused some confusion amongst our users. During the Liferay DXP upgrade process, several WARN...
Deploying Xuggler on Windows 64 bit
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Xuggler is a tool for users to encode and decode media files. Used in conjunction with Liferay Portal or Digital Enterprise 7.0, users can view media files on the Documents and Media...
Fix Pack and Hotfix installation order on Liferay Portal EE
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The order of fix pack and hotfix updates are determined by engineering in several ways. This order is hardcoded in the update. Environment Versions previous to Portal 6.2 SP11...
Declining One Event of a Repeating Event Declines Every Repeating Event
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This article documents how declining one event of a Repeating Event declines every repeating event. For example, if there is a weekly repeating event and a user declines that event in...
Setting Up Liferay Portal on a DB2 Database
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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. This article outlines steps on how to setup...
Upgrading to Liferay Portal 6.0 EE SP2
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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. When upgrading to the latest Liferay...
Liferay Information for Common Application Servers
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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. Resolution...
Avoiding a Batch Error When Defining Friendly URLs
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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...
Liferay DXP Javadocs
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For developers, Liferay has created a set of documentation (Javadocs) that provide API and code detail for working with Liferay DXP's core software. To access the Javadocs, follow either one of the following...
Deploying Plugins via Administration Console
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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. There are multiple application servers...
Anonymizing Data
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Preserving anonymity of users when providing data to Liferay may be a concern for certain use-cases. The following guidelines should assist in determining which data should be anonymized and finding...
Issues With Setting Time Zone Settings on the JVM Level
Legacy
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....
Using the Data Migration Tool in Liferay DXP 7.1
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This article documents how to use the data migration tool in the Server Administration section of Liferay Digital Experience Platform (DXP) 7.1. The Data Migration Tool allows administrators to migrate data quickly...
Inputting Initial S3 Configuration Settings on DXP 7.0
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This article serves as a reference for how to configure Liferay Digital Experience Platform (DXP) to use Amazon Web Services S3. DXP users can leverage Amazon S3 in two key areas; to serve as a file store repository,...
Upgrading to Liferay Portal 6.0 EE SP1
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When upgrading to the latest Liferay Portal, there are many things to take into account. This guide is designed to assist in the upgrading process. Please read and ensure your...
System-ext.properties Reference Guide
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This article serves as a reference guide for how to set system wide properties through the system-ext.properties file. Similar to the relationship between the portal.properties and portal-ext.properties files,...
Stopping Liferay DXP 7.0 LPKG Modules
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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...
Understanding Languages in Liferay Portal
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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....
Moving Existing Data From an Old Liferay bundle to a New One
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This article provides a checklist when you move your existing data from an old Liferay environment to a new one. Resolution For database, please backup the database in old environment and import it to the new environment....
Creating a Backup/Disaster Recovery Environment for Liferay Portal
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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...
Managing Time Zones in DXP 7.0
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This article documents how to change the time zone in your Liferay DXP 7.0 environment. Given that users are working with the Liferay platform from all over the world, it is important to have the ability to change...
Thread Contention: A Common Performance Issue in DXP 7.0
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This article documents a common performance issue related to Thread Contention within Liferay DXP 7.0. Read below for the necessary information about this issue and how to navigate through it. Resolution...
Too Many CPU Intensive Tasks: A Common Performance Issue in DXP 7.0
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This article documents a common performance issue related to running Too Many CPU Intensive Tasks within Liferay DXP 7.0. Continue reading to discover the necessary information about this issue and how to...
Insufficient Resources: A Common Performance Issue in DXP 7.0
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This article documents a common performance issue related to Insufficient Resources within Liferay DXP 7.0. Read below for the necessary information about this issue and how to navigate through it. Resolution...
Removing '/web/' From Auto-Generated URLs
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This article documents how the Liferay platform will automatically generate URLs appended with /web/, which can also be changed to a friendly URL. This may be an issue for those who do...
Common Causes for the Properties in the 'portal-ext.properties' Not Taking Effect
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This article documents the circumstances for when properties in the portal-ext.properties are not working correctly. This article also discusses common causes for the properties in the portal-ext.properties not...
Setting Up the Liferay Platform on AWS EC2
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This article is a guide to help users set up, install and cluster Liferay DXP 7.0 or 7.1 on AWS Elastic Compute Cloud (EC2).  Resolution EC2 Instance Set Up There are 2 kinds of EC2 instances: (1)...
Virtual Host Quick Guide
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The official Apache Virtual Host Documentation states:  The term Virtual Host refers to the practice of running more than one web site (such as company1.example.com and company2.example.com) on a single machine....
Deploying the Liferay Platform on WebSphere Network Deployment Edition
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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...
Upgrading to Permission Algorithm 6
Legacy
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...
Upgrading to Liferay Portal 6.2 EE
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For many customers, upgrading your Liferay platform can be a significant step forward for users, administrators and developers. Not only does an upgrade provide you with the “latest...
Setting Up Session Replication in Tomcat With Liferay Portal
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The purpose of this article is to setup a basic Tomcat cluster that has session replication. For true session replication, there must be a load balancer that redirects the traffic to...
Setting Up Session Replication in Weblogic With Liferay Portal
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This article outlines how to set up session replication using Weblogic with Liferay Portal. This documentation is for reference only. Configuring session replication is not recommended...
Setting Up the Liferay Platform on Microsoft Azure
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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...
Installing Fixes That Involve Updates to Database Tables
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We understand that some customers have security policies which compel them to use the Liferay platform to connect to the database as a user that does not have elevated privileges; privileges to change the...
Migrating File System Stores
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This article documents how to use the Data Migration tool in the Server Administration section of Liferay DXP 7.0. The Data Migration Tool allows administrators to migrate data quickly between Documents and Media...
Optimizing S3Store Cache Settings
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This article documents an issue with using S3Store where the Application Server's temporary directory might grow a lot more than expected. The contents of this article apply to users of Liferay DXP, and concern...
Checklist for Upgrading to Liferay DXP
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Upgrading to Liferay DXP (7.0, 7.1, 7.2, or 7.3) is a major project and requires careful planning, testing and execution in order to be successful. However, Liferay DXP and DXP Cloud...
Modifying Cache Size, Time To Live and Replication in DXP 7.0
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This article documents how to work with your cache in Liferay DXP 7.0, in order to modify its size, time to live (TTL) and replication. Resolution Modify Default Cache Sizes and Entry TTLs A potential source of...
Installing DXP in a Clustered Environment
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This document has been updated and ported to Liferay Learn and is no longer maintained here. Many enterprise environments utilize clustering for both scalability and availability. This article provides specific...
Disabling OSGI Components for DXP
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This article documents how to temporarily disable an OSGI component via Gogo Shell, and how to add a component to the blacklist in order to disable it permanently. We will use the WebDAV component as an example. Resolution...
Ehcache Configuration for DXP 7.x
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This document has been updated and ported to Liferay Learn and is no longer maintained here. This article documents how to implement distributed caching on Liferay DXP 7.x and how to deploy custom tuning...
Installing DXP on IBM DB2 v.10.5
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This article documents steps on how to start Liferay DXP on IBM DB2 10.5. Resolution Creating a Database Start DB2 Command Line Process Plus. Enter the following: create database dxp pagesize 32768 USING CODESET UTF-8...