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Tomcat JDBC Connection Exhaustion
legacy
This article helps troubleshooting MySQL when executing the VerifyProcess. Small Max JDBC Connection Pool causes JDBC Connection Exhaustion if the VerifyProcess is executed...
Possible Performance Issue Caused by LPS-48693
legacy
Before the portal-84-6210 fixpack, the DDMTemplate editor UI was missing the cacheable checkbox. This issue caused each DDMTemplate that was saved into the DB to not be cached. This article provides a solution to a...
A 'ClassNotFoundException' Thrown by WebLogic 12c
legacy
This article documents a known issue that occurs when deploying portlets that use JNDI. Liferay Digital Experience Platform (DXP) isn't able to load Weblogic's JNDI classes by default, which often results in a...
Portal Best Practices
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 While the article is no longer maintained, the information may still be applicable. The...
Modifying Liferay Page Messages Through Language.Properties
legacy
In order to change out of the box page messages within Liferay, one must configure the properties of the language.properties located in the portal-impl.jar/content/language.properties...
Liferay Information for Common Databases
legacy
The following article contains relevant information for connecting Liferay to some of the more common databases. Resolution   MySQL Oracle Commands http://dev.mysql.com/doc/refman/5.5/en/index.html...
Connecting WebDAV to Liferay Portal Running Behind a Web Server
legacy
This article documents how to connect to Liferay WebDAV folders and files from a WebDAV client if Liferay Portal is running behind a web server. Specifically, this issue was found using the IBM WebSphere application...
Changing the Liferay Logs Directory
legacy
This article documents how to change the Liferay logs directory from the default [LIFERAY_HOME]/logs to another desired path.  Resolution Steps to Change the Liferay Logs Directory...
Upgrading to Liferay Portal 6.1 EE
legacy
With the release of Liferay 6.1 EE GA1, Liferay introduced the Seamless Upgrade feature. Seamless upgrades allow users to upgrade to the latest version of Liferay by simply pointing...
Unicast with JGroups (RMI)
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....
Starting Up a Liferay Bundle From an External Drive on a Mac
legacy
Whether it's for demo-ing Liferay or for other purposes, you may at some point wish to run a Liferay bundle from an external hard drive. Most of the time, this is straightforward. When...
Migrating properties which are set through Control Panel to portal-ext.properties file
legacy
Important Notification: Modifying the database is a risky operation! Always make a backup of your database before any modifications! If your custom portal properties are already set...
Liferay's "Verify" Process
legacy
This article explains a few key facts surrounding the "verify" process in the Liferay Portal and steps that need to be taken to ensure the integrity of the database being used by the...
Installing Portlets Within the Control Panel in 6.1 GA2
legacy
In Liferay Portal 6.1 EE GA2, administrators do not have the ability to deploy plugins from the control panel. In order to achieve the installation of portlets not within Liferay...
Upgrade Process properties are not needed anymore
legacy
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...
Autodeploying Plugins in WebSphere With Liferay 6.1 EE GA2
legacy
Starting with Liferay Portal 6.1 EE GA2, plugins can be autodeployed to WebSphere. As a part of the Liferay autodeploy process, the Liferay platform will call the Websphere's wsadmin script interface to deploy the...
Internal Server Error after Upgrade
legacy
A common error is that sometimes when certain pages display an internal server error and there is no stacktrace. If there was a custom theme before the upgrade the page layouts will still reference them and if one has not...
Copy File Error When Extracting a Liferay Bundle
legacy
This article describes a workaround for the following known issue that you may encounter when using Liferay Portal with operating system Windows XP and/or Windows 7. The error reads:...
Using Portal Properties for Separate Liferay Instances
legacy
Much like the portal-ext.properties file, portal-${instance}.properties files override properties set in portal.properties and other files for a specific Liferay instance. This article...
Applying Fix Pack 37 Causes Duplicate Entry of 'com.liferay.rss.web.internal.util.RSSFeed' for Key 'IX_B27A301F'
legacy
This article documents a known issue when updating to Liferay DXP 7.0 Fix Pack 37 or higher. During the update process, the following error exists in the console: java.lang.RuntimeException:...
Session Variables / User Scoped Variables Development
legacy
This article documents how to use Session Variables / User Scoped Variables in conjunction with portlets. There is also an included example in the details to help demonstrate how this...
Using JNDI Resources with Hibernate
legacy
If you are using Hibernate to connect to JNDI resources on Tomcat (or an application server that manages JNDI resources the same way), this tutorial is for you! As background, one way...
[Upgrade] Handling Quartz Data during Liferay Portal Upgrades
legacy
Quartz data is a unique type of data. If quartz data is part of the database upgrade, then there are some potential additional steps to take during the upgrade process. Resolution If there are not any publishing jobs,...
Backslashes in Screen Name Are No Longer Valid After Upgrading to Liferay Portal 6.2
legacy
After upgrading from Liferay Portal version 5.2 EE SP4 to 6.2 EE, backslashes in the screen name are not allowed when using the liberal screen name validator. In Portal 5.2, backslashes were allowed in the screen name....
Errors When Applying Support Driven Hotfixes Based on FP-41 or FP-42
legacy
This article documents a known issue when applying a Liferay Support Driven Hotfix built off either DXP 7.0 Fix Pack 41 or Fix Pack 42. Due to an error generating the release notes, the documentation.xml file in Fix...
Setting Up Liferay Portal Using Oracle Databases
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...
Setting Up Liferay Portal on Postgres 9
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.  This article will explain how to create a...
Setting Up and Configuring MySQL Database With Liferay Portal
legacy
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...
Self-Diagnose the Structural Issues in Custom JAR
legacy
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...
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...
JBoss EAP vs. JBoss AS
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....
Exporting Liferay's Database Schema on Oracle
legacy
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
legacy
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
legacy
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
legacy
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
legacy
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
legacy
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
legacy
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
legacy
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
legacy
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
legacy
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
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. The following article outlines a short...
Apache Struts 1 Known Vulnerabilities
legacy
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
legacy
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
legacy
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
legacy
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'
legacy
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
legacy
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
legacy
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
legacy
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
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. This article outlines steps on how to setup...
Upgrading to Liferay Portal 6.0 EE SP2
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. When upgrading to the latest Liferay...
Liferay Information for Common Application Servers
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. Resolution...
Update Manager gives plugin update reminders for up to date plugins
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. This article documents a known issue where...
Document versioning won't display versions after 1.9 is entered
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. Upon...
Avoiding a Batch Error When Defining Friendly URLs
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. If you...
Liferay DXP Javadocs
legacy
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
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. There are multiple application servers...
Anonymizing Data
legacy
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...