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Avoiding SAXParser Exceptions
legacy Troubleshooting
By default, the Liferay platform does not define a SAXParser. But please note that a SAXParser contains the logic that can parse XML files. Liferay does not define a SAXParser because certain setups (e.g....
Trouble Starting Portal If 'Java_Home/bin' Is Not Defined in Path Variable
legacy Troubleshooting
This article describes a known issue where the platform may not start if JAVA_HOME/bin is not defined in the PATH variable. DXP 7.0 and 7.1 requires JAVA_HOME and PATH variables to be set. However, the...
Known Issues with Core-5
legacy Troubleshooting
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 While the article is no longer maintained, the information may still be applicable.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 a small set of...
DXP Fails to Generate Captchas and Charts on RHEL 7.4
legacy Troubleshooting
When using RHEL 7.4, and viewing a captcha, or when navigating to Control Panel > Configuration > Server Administration, the following stack trace will appear in the application server logs. That is...
ConcurrentModificationException When Deploying Plugins on Liferay Portal 6.1 EE GA3
legacy Troubleshooting
This article outlines a specific known issue that exists within Liferay Portal 6.1 EE GA3 SP3 and provides a link to follow its resolution. Resolution At the time of release, there is one known issue with Liferay...
Difficulty Adding Assets That Use Alloy Editor on Windows Os in DXP 7.0
legacy Troubleshooting
This articles serves as a troubleshooting guide for users working in Liferay DXP 7.0. When it comes to adding assets using the alloy editor on Windows OS, you may encounter some difficulties. The browser may display a...
Resolving 'UnsupportedOperationException' Caused by an Invalid Audit Max Queue Size Setting
legacy Troubleshooting
This article documents steps on how to increase the audit message max queue size that leads to an UnsupportedOperationException.  By default, System Settings > Foundation > Audit > "Audit message max queue size" is set...
X-FRAME-Options Reference Guide
legacy How To
This article is to help those who wish to change the X-Frame-Options in Liferay Digital Experience Platforms. Usually, this is required if you are trying embedding widgets in a portlet or an iFrame so that HTTP headers...
Tomcat JDBC Connection Exhaustion
legacy Troubleshooting
This article helps troubleshooting MySQL when executing the VerifyProcess. Small Max JDBC Connection Pool causes JDBC Connection Exhaustion if the VerifyProcess is executed...
Unicast with JGroups (RMI)
legacy How To
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 Troubleshooting
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...
Upgrading to Liferay Portal 6.1 EE
legacy How To
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...
Changing the Liferay Logs Directory
legacy How To
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...
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...
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...
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...
[Upgrade] Handling Quartz Data during Liferay Portal Upgrades
legacy How To
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....
Poor Performance in DB2 When Executing SQL Queries Over Big Tables Filtering by a Column With a Non-Unique Index
legacy Troubleshooting
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...
Ehcache Configuration for Different Versions of the Liferay Platform
legacy How To
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...
A 'ClassNotFoundException' Thrown by WebLogic 12c
legacy Troubleshooting
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...
Migrating properties which are set through Control Panel to portal-ext.properties file
legacy How To
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...
Connecting WebDAV to Liferay Portal Running Behind a Web Server
legacy Troubleshooting
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...
Copy File Error When Extracting a Liferay Bundle
legacy Troubleshooting
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 How To
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...
Setting Up Liferay Portal on Postgres 9
legacy How 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.  This article will explain how to create a...
Session Variables / User Scoped Variables Development
legacy How To
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 How To
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...
Self-Diagnose the Structural Issues in Custom JAR
legacy Troubleshooting
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 Upgrades: Updating Custom Plugins
legacy How To
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 Portal Database Portal Properties
legacy How To
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...
IP Geocoder Temporarily Loss of Connectivity
legacy Troubleshooting
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...
Exporting Liferay's Database Schema on Oracle
legacy How To
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...
Modifying Liferay Page Messages Through Language.Properties
legacy How To
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'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 How To
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...
Autodeploying Plugins in WebSphere With Liferay 6.1 EE GA2
legacy How To
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 Troubleshooting
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...
Applying Fix Pack 37 Causes Duplicate Entry of 'com.liferay.rss.web.internal.util.RSSFeed' for Key 'IX_B27A301F'
legacy Troubleshooting
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:...
Errors When Applying Support Driven Hotfixes Based on FP-41 or FP-42
legacy Troubleshooting
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...