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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 enable or disable this property to allow specific calls in Freemarker or...

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 that are done to the database. Many times it is helpful to take a look at the constraint that is causing...

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 portlets from the pool of available portlets. Fortunately, this can be achieved either in the control panel...

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 portlet. The integration with Liferay is a .jar file downloadable from the Control Panel. There is a...

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 the third week—every repeating event is then declined. When you select Event Details, the option to...

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 While the article is no longer maintained, the information may still be applicable.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 Portal, there are many things to take into account. This guide is designed to...

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 Experience Platform 7.0 or 7.1. For customers who are upgrading their Liferay...

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 your environment is ready prior to performing the upgrade. Resolution These instructions should be used if...

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 CVE-2012-1007: Multiple cross-site scripting vulnerabilities CVE-2015-0899: Remote...

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 messages are issued with an SQL exception such as follows: 11:01:50,141...

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 Resolution General Guidelines: The general order of installation is: Fix-Packs and Security Updates before...

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, and to manage clustering. Regardless of which usage, there are three...

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 documents a known issue where administrators may receive the message "Updates are available for...

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, administrators can affect system wide changes in the system.properties by...

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 crucial to have a stable and working backup of the production environment to...

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 vulnerability is reported in the following versions: Apache Tomcat 9.0.0.M9...

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 a DB2 connection with Liferay Portal. This article use properties set...

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. For documents, they are stored...

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 between Documents and Media repository to another, such as moving from...

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 environment is ready prior to performing the upgrade. Resolution These are listed in order of what should be...

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   Tomcat JBoss Weblogic Websphere Glassfish WEB-INF Folder ${TOMCAT_HOME}/webapps/ROOT...

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. Upon updating a document to the 10th version, you may see an error similar to this: ERROR...

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 have a user that has a friendly URL page like "myca" and that user tries to join the user group that also...

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 modules using the OSGi framework, there are benefits which have been...

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. This way, when a page loads, Liferay Portal will detect the language, pull up the corresponding language...

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 instructions. For the zip file, navigate to the Liferay DXP 7.0 Fix...

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 that allow users to deploy plugins via an administration console of some...

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 where 'sensitive' data can be located on Liferay's database. Resolution Create a SQL...

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 the time zone. You can do this at two different levels; the individual...

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 navigate through it.  The following are some of the more common causes and...

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) EC2-classic and (2) EC2-VPC. Please refer to Amazon's documentation for more detailed...

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 not want to append generated endings to URLs. For instance: http://liferay.com/web/page.html becomes...

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 taking effect and provides instruction on the proper ways to configure the...

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 offers an additional profile to manage multiple application server...

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 permissions algorithm starting with Liferay Portal 5.1. Beginning...

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 cloud computing platform and infrastructure created by Microsoft. It is...

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 structure of the tables, such as CREATE, ALTER and/or DROP.  Sometimes a plugin or...

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 repository to another, such as moving from File System Store or DB Store to...

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 teams have introduced several features that make this upgrade process easier and as seamless as possible....

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 confusion is the ehcache.multi.vm.config.location portal property. This...