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Portal has upgraded successfully and NullPointerException is thrown with the server startup
Issue Successfully upgraded the Liferay portal from 6.2EE to DXP 7.1 GA but the server is not started and thrown the NPE Null pointer Exception: 2019-09-13 01:11:59.750 ERROR [http-nio-8080-exec-1][MainServlet:1225]...
CacheFilter Expiration time
Issue The cache filter caches processed web content.  To change the cache expiration time to live ehcache.xml needs to be modified. So where can we set the expiration time. Environment Liferay DXP 7.0 Resolution The...
How to Configure Multiple Site Names with Different HostNames
Issue How Multiple Sites can be configured with Different HostNames in the portal? The below example illustrates the requirement. If there are two sites Site A and Site B then, 1) Site A should be mapped with...
Login issue when configuring the SSL on JBoss EAP 7.0
Issue Login issue when configuring the SSL on JBoss EAP 7.0 Environment Portal: Liferay DXP 7.0 Application Server: JBoss EAP 7.0 Operating System: Ubuntu 19.04 Resolution Please Note: The following procedures and...
PortalContextLoaderListener with Runtime Exception
Issue After upgrading the Liferay portal DB from 6.2 to 7.2 successfully, Unable to start the server. Below error occurs: [# Error1] 27-Dec-2019 21:01:10.432 SEVERE [main]...
How to use JDBC ping for DXP 7.1 dockerized cluster in Kubernetes
Issue We have a 7.1 cluster in Kubernetes with docker image Liferay nodes. We don't know in advance what IP address would be assigned to Liferay containers. As the pods can get killed and then the cleanup does not...
java.sql.SQLException: Incorrect string value and no Display Templates listed for the Breadcrumb widget
Issue On startup, the server will print errors similar to these: ERROR [main][JDBCExceptionReporter:234] Incorrect string value: '\xE5\x9F\xBA\xE6\x9C\xAC...' for column 'name' at row 1 WARN...
Cluster cannot be started after updating to Fix Pack 3 on Liferay DXP 7.2
Issue After installing liferay-fix-pack-dxp-3-7210.zip, TCPping cluster nodes can not be started due to the following errors: 2019-12-16 16:02:56.201 ERROR [SCR Component Actor][ClusterExecutorImpl:93] bundle...
SIGSEGV Issues in JDK 7u40
Issue Symptom: "A fatal error has been detected by the Java Runtime Environment: SIGSEGV (0xb) at pc=0x00002ad5cad58a87, pid=18862, tid=1093142848" Environment Liferay 6.1, embedded...
About log rotations
This article has been machine translated from its original language for your convenience. Please use discretion as this translation may include some inaccuracies. If you encounter issues with the translation, please...
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...
Different Browser Cache Behaviour on HTTPs Protocol in Google Chrome
Issue Not all of the static requests are cached in Google Chrome, when you follow this documentation to set up HTTPs: Setting Up HTTPs on Tomcat Reproduction steps: Set up the portal as per attached...
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,...
SSL/TLS communication when connecting to the database
Please be aware that the page you are viewing has been machine translated from Japanese into English and may contain some translation errors. If you observe any issues with the translation, please contact us. Issue Is...
Unable to startup the server: NPE while loading configurations from database
Issue The issue usually comes with Oracle database and having a null dictionary in the table Configuration_ for the configurationid org_apache_felix_cm_impl_DynamicBindings Due to this, Liferay fails to start,...
About the destination of the log that Liferay outputs as standard
This article has been machine translated from its original language for your convenience. Please use discretion as this translation may include some inaccuracies. If you encounter issues with the translation, please...
Does Liferay use the full version of JQuery?
Issue JQuery offers both "Full" and "Slim" versions of their libraries Some API is available in the "Full" version only Environment Liferay Portal Liferay DXP Resolution Liferay includes the "Full"...
Logging Mechanism for Liferay Database Pool
Issue 1. How to increase the logging around connection pool which can help to understand the activities within the connection pool? 2. What other container-managed database connection pool can be used instead of c3p0?...
Unable to resolve portal host java.net.UnknownHostException:[HOSTNAME] Name or service not known
Issue When starting up the Tomcat server I get the following stacktrace: WARN [catalina-exec-15][PortalImpl:7173] Unable to resolve portal host java.net.UnknownHostException: [tomcat-host] Name or service not...
Benchmark Study of Liferay DXP 7.2
This whitepaper is a benchmark study of Liferay Digital Enterprise 7.2 and describes optimal configuration, settings, and the methodology used for this study. The whitepaper also...
Liferay DXP 7.2 Database Portal Properties
This document has been updated and ported to Liferay Learn and is no longer maintained here. This article is intended to provide a list of all the Liferay DXP 7.2 properties that can be used to connect the database of your...
Is there a limit to the number of calendar events that can be displayed?
This article has been machine translated from its original language for your convenience. Please use discretion as this translation may include some inaccuracies. If you encounter issues with the translation, please...
After building the theme with code changes, the changes are not reflected in the UI as well as in the source code.
Issue When customizing the theme by modifying the source code of Liferay 7.1, the changes are not reflected in the UI as well as in the source code of the theme. Environment Liferay DXP 7.1 Resolution Please Note:...
A StaleObjectStateException is Thrown When Using a Liferay Service
Issue After installing Liferay DXP 7.2 Service Pack 1 or Fix Pack 2 a StaleObjectStateException is generated when a customization uses a Liferay service to update or modify data: Caused by:...
Blogs Image Properties Moved to OSGi Config
Issue After installing 7.2 fix pack 1 the blogs.image.max size and blogs.image.extentions settings do not persist. Resolution The blogs.image. portal properties have been modularized and need to be set in the Control...
How can I include my JSP in a Liferay Blade Servlet?
Issue I'd like to include a JSP in the doGet method of my Servlet plugin. The following gives NullPointerException:  this.getServletContext().getRequestDispatcher("index.jsp").include(httpServletRequest,...
Errors in the log file of the type "Redirect URL is not allowed" and seemingly unrelated symptoms
Issue There are traces in Liferay's logs resembling this: 2019-08-27 08:46:42.641 WARN [http-nio-8080-exec-4][PortalImpl:1003] Redirect URL .... is not allowed Additionally, some other issues appear at the same time:...
LCS Activation Page redirect
Issue The portal redirects automatically to the LCS Activation Page even with activation tokens deployed. Environment Liferay DXP 7.0+ Resolution  Regenerate the LCS tokens, but with "Liferay Instance Activation"...
EXT Plugin not deploying
Issue EXT Plugin not deploying correctly through the methods presented in the documentation: Deploying an Ext Plugin Environment Liferay DXP 7.1 Resolution Deploy the EXT Plugin to marketplace/override folder...
Retrieving custom cache entity fails with error
Issue The custom cache entity we introduced to Liferay is inaccessible. We configured our custom cache in override-liferay-multi-vm-clustered.xml. When trying to access the custom cache entity from scripting console...
Tomcat trimSpaces feature breaks Liferay styling and functionalities
Issue When setting trimSpaces in tomcat-9.0.6/conf/web.xml: <init-param> <param-name>trimSpaces</param-name> <param-value>true</param-value> </init-param> some functionalities on the Liferay User Interface...
Calendar Event invitation mail is sent to the user before the approval of event
Issue If the workflow is applied for the Calendar Event, the user who is invited to that particular event gets an email invitation even before the approver approves the event. Environment Liferay DXP 7.0...
How to remove unnecessary parts from the URL / shorten URL / make URL friendlier
Issue We would like to remove the web/guest part of the URL, to shorten it e.g. http://www.example.com/web/guest/home-> http://www.example.com/home  Environment Liferay Portal 6.2 Liferay DXP 7.0-7.4...
External images inside OpenOffice/LibreOffice document are not resolved when converted to PDF
Issue Upload to Document Library a new OpenOffice document with external link to image. Export the document to PDF. The document is converted to PDF but the image is blank. Environment Liferay DXP 7.0, 7.1,...
Audience Targeting is deployed but unavailable
Issue After deploying and restarting, Audience Targeting is not available in site's Configuration > Audience Targeting. Tables corresponding to Audience Targeting are not created. Environment Liferay DXP 7.0, 7.1...
DXP 7.2 Upgrade Reference Guide
An upgrade to Liferay DXP 7.2 gives you access to the latest Liferay technology, complete with all of the newest features, and the assurance of continued support for your Liferay environment. Our Subscription Services Team...
How can I execute a bulk update of the time zone of all users?
Issue After installing Liferay and creating all users, customer has realized that Liferay instance and all users are configured with the default timezone (UTC) but it should be updated to a correct one (ie: Europe/Paris)...
How to get the total number of documents once migrated from File System to DB Store?
Issue If the data is moved from the File System to DB Store, then how to get the number of documents from the portal. Environment Liferay DXP 7.0 Resolution When DB Store is used as a repository, the files...
Page not found (404) redirects to the 'default' (Guest) web site
Issue When an incorrect URL is hit on the portal, the "The requested resource could not be found" error or Page not found error redirects to the default site and not to that particular site. Environment...
Setting different landing pages on different cluster nodes upon session timeout
Issue The users have to be redirected to different pages - depending on the nodes -, when the sessions expire. A possible use case: One of the Application Servers is an admin server, thus the admins need to...
Control Panel App Manager not showing
Issue The App Manager section in the control panel is missing. Environment Liferay DXP 7.1, 7.2 Resolution Try this list of steps: Stop the application server. Delete the contents of the...
How to resolve AnnotationExceptions encountered during startup when updating 7.0 to de-67+ while using WebSphere
Issue Using WebSphere FP 11 as our application server, we are unable to start up a 7.0 deployment after patching to de-67, and are receiving an AnnotationException in the log, as follows: Annotation processing failed...
How can I disable Liferay's xml log file?
Issue In {Liferay_Home}/log folder, we can see two different files as below:      liferay.2019-08-25.log      liferay.2019-08-25.xml We only want "liferay.2019-08-25.log" file and need to disable "xml" file. Environment...
Guest User can download the attachment from Knowledge Base
Issue The guest user can download the attachments present in the Knowledge Base Article  1. Create a Knowledge Base Article add an attachment to that article.  2. Now remove all the guest permission from that article....
After upgrading to Liferay 7.1+, guest users cannot see some web contents
Issue After upgrading to Liferay DXP 7.1+, guests users cannot see some web contents. This is also reproduced for users that aren't members of one site. They cannot see web contents that belong to that site. Environment...
"Too Many Open Files" error in log
Issue "Too Many Open Files" error is reported in the log. For example: 2019-05-06 09:41:20,142 SEVERE [org.apache.tomcat.util.net.NioEndpoint] Socket accept failed java.io.IOException: Too many open files at...
After upgrading to JDK 11, Tomcat can not be started due to "NoClassDefFoundError: javax/xml/bind/DatatypeConverter"
Issue After upgrading to JDK 11, Tomcat can not be started due to "NoClassDefFoundError: javax/xml/bind/DatatypeConverter" 28-Aug-2019 05:40:11.346 SEVERE [main] org.apache.catalina.core.StandardContext.listenerStart...
Tips for minor updates in the infrastructure (application server, database server, ...)
Issue Sometimes, there is the need to update the infrastructure (application server, database server, elasticsearch server, etc.), to benefit from security fixes, performance improvements or others. Minor...
How to programmatically undeploy a module in DXP 7.1?
Issue I want to undeploy a module from my code, usig API I tried using DeployManagerUtil.undeploy(context), but nothing happens Environment Liferay DXP 7.1 Resolution If you are trying to undeploy a module by its context...
Child pages not displayed in Navigation Menu after upgrading to Liferay 7.2
Issue After upgrading the portal to Liferay DXP 7.2, the child pages which were present in Liferay Portal 6.2 go missing from the Navigation menu in DXP 7.2. But, the child pages are present in Site Builder....
Liferay DXP and S3 security
Issue Does Liferay support server-side encryption on Amazon S3? Is Liferay calling S3 over HTTPS only? Will Liferay work on a restricted S3 bucket without public access? Environment Liferay 7.0 DXP Liferay 7.1...
Service Packs and Fix Packs Overview
Please be aware that the page you are viewing has been machine translated from Japanese into English and may contain some translation errors. If you observe any issues with the translation, please contact us. Issue...
JGroups IllegalArgumentException After Installing Fix Pack 1 on Liferay DXP 7.2
Issue After installing fix pack dxp-1-7210 with cluster.link.enabled=true the following exception is generated: Caused by: java.lang.IllegalArgumentException: JGRP000001: configuration error: the following properties...
How to restrict the JSON web services API page
Issue JSON web services API page is being exposed through the URL http://[address]:[port]/api/jsonws. Environment Liferay Portal 6.2 Resolution Liferay Portal 6.2 doesn't have any out of the box option to...
Nested Applications portlet causes com.liferay.portal.kernel.servlet.NonSerializableObjectHandler on Weblogic
Issue When adding the Nested Applications to a page, the logs show the error com.liferay.portal.kernel.servlet.NonSerializableObjectHandler You can't add portlets to the Nested Applications Environment...
Action Button on pages are not working as expected
Issue While clicking the action button of the Public Pages the menu appears and then disappears. Environment Liferay DXP 7.1 Resolution The observed behavior is a known issue and is fixed in liferay-fix-pack-dxp-10 and...
No page can be displayed due to "Unsupported template" errors
Issue DXP may not be able to display any portal pages due to HTTP 500 status as well as showing this error on the interface: An unexpected system error occurred. Unsupported template manager ftl and this one in...
How Liferay portal upgrades the content?
Issue The portlet id('s) which has included in the content of the web content portlet is not getting updated after upgrading the portal. Environment Liferay portal 6.2EE Liferay DXP 7.0 Resolution How Liferay works?...
Change root context to custom context
Issue How to change the portal context from ROOT to something else? Can I append "xxx" to all the portal URL? Environment Liferay DXP 7.4 Liferay DXP 7.3 Liferay DXP 7.2 Liferay DXP 7.1 Liferay Portal 6.2 JBoss EAP 7.1 /...
Using Portal Properties for Separate Liferay Instances
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...