Capability

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Liferay offers a comprehensive toolkit to extend or customize your digital experience. Build applications quickly with low-code/no-code features like Objects, or leverage developer tools like Liferay Workspace and Blade CLI for further customizations.

For users on PaaS or running Self-Hosted, Liferay also offers tools deploying customizations.

Feature
Deployment Approach
How apply changes to Tomcat's server.xml file in Liferay PaaS
legacy How To
Note: please note that Liferay has renamed its Liferay Experience Could offerings to Liferay SaaS (formerly LXC) and Liferay PaaS (formerly LXC-SM). Issue I need to make some changes in Tomcat's server.xml...
The jgroupsping entries not getting deleted from table in Kubernetes environment
legacy Troubleshooting
Issue In case of using Kubernetes, you might encounter a problem in your cluster using JDBC_PING, as the entries from the jgroupsping table related to the shutdown pods are not getting deleted. Environment DXP 7.3+...
Application performance comparison between Unicast and Multicast configurations
legacy
Issue As per the business-specific requirement, modified the configurations by changing from default multicast with unicast clustering. While doing so, how the application performance will be impacted between Unicast...
"Your request failed to complete" error is displayed on the user interface but there is no more information about it
legacy Troubleshooting
Issue If there is an unexpected error, sometimes a "Your request failed to complete" error is displayed on the user interface, but no additional information is given. How can I get more information on this error?...
Using JSONFactoryUtil.looseDeserialize method deserilizes to HashMap instead of my class.
legacy Troubleshooting
Issue We have a WAR portlet that uses JSONFactoryUtil.looseDeserialize method. Also, our class is defined as whitelisted. See following: json.deserialization.whitelist.class.names=\...
How can I manually force the generation of document thumbnails?
legacy How To
Issue It is necessary to regenerate all thumbnails of the documents in documents and media. After executing "Reset preview and thumbnail file for Documents and Media" in the server administration section, the thumbnails...
Multiple Spring MVC Portlets names are not displayed in Add Widget menu when added in the same WAR file
legacy Troubleshooting
Issue When creating custom widgets, if multiple widgets are deployed within the same war file, the individual names of the widgets are not seen in the Add Widget menu within Liferay Instead, each widget shares the same...
NullPointerException in service builder methods after upgrade to DXP 7.3
legacy Troubleshooting
Issue After upgrading the portal to DXP 7.3, the following stack trace in some custom modules is reported: Caused by: java.lang.NullPointerException at...
Getting com.mysql.cj.jdbc.exceptions.CommunicationsException on server startup
legacy Troubleshooting
Issue User gets below error on server startup/restart: ERROR [main][DialectDetector:147] com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure__The last packet sent successfully to the...
Create custom notification module
legacy Troubleshooting
Issue Unable to get notification over UI even after adding entry in usernotificationevent table through UserNotificationEvent API. Environment Liferay DXP 7.2 Resolution Even after adding entry in...
SQLRecoverableException
legacy Troubleshooting
Issue The server is down with the below exception java.sql.SQLRecoverableException. What will be the possible root cause which triggers this exception? 2021-10-12 10:25:54,807 SEVERE [Common.CommonUtils] (default...
Known Issue: "PermissionChecker not initialized" errors are observed and no pages are rendered following upgrade to 7.3
legacy Troubleshooting
Issue After upgrading from 7.0 to 7.3, when we start up our bundle for the first time the site does not render any pages (other than to show "powered by" on the home page) and the following error can be observed in...
How to connect to API Rest using Digest Auth in 7.1
legacy Troubleshooting
Issue It's not possible to accces to an endpoint in 7.1 when using Digest Auth using the same configuration as used in higher versions (for our example we'll use 7.3). For the reproduction steps we'll use: the same...
Known Issue [Resolved]: Staging publications in the Global site fail due to duplicate categories after upgrade to 7.3 or 7.4
legacy Troubleshooting
Issue After upgrading our 7.0 bundle (where we had some categories in the Global site used for various assets) to 7.3, the vocabularies look to be duplicated in the post-upgrade environment (one list that cannot be...
Fetching the web contents with the "Accept-Language" header returns different languages
legacy
Issue Fetching the web contents using the headless API with the "Accept-Language" header returns the selected language variation if there is a translation for it, but otherwise, it returns the default...
Restricting redirection to whitelisted URLs
legacy How To
Issue I want to specify the URLs my users get redirected from our site.  Environment DXP 7.0+ Resolution You have more information about this settings in this article: Errors in the log file of the type "Redirect URL...
After upgrading from 7.2 to 7.3, Style Books throws IllegalArgumentException
legacy Troubleshooting
Issue After upgrading from 7.2 to 7.3, Style Books is inaccessible Steps to Reproduce: Launch a clean 7.2 DXP bundle Shut down the bundle once the portal appears in the browser Upgrade to 7.3 and launch the...
7.2 to 7.3 upgrade fails with "Failed upgrade process for module com.liferay.asset.display.page.service"
legacy Troubleshooting
Issue The upgrade fails with an error message that includes the following line: ERROR [main][UpgradeStepRegistratorTracker:144] Failed upgrade process for module com.liferay.asset.display.page.service Environment DXP...
Bulk deployment state loop
legacy Troubleshooting
Issue When trying to deploy the modules in bulk, the modules got stuck in a start-stop loop. Environment Liferay DXP 7.2, 7.3 Resolution It's an already known issue LPS-139889 and will be fixed in the...
After updating to DXP 7.2 FP dxp-13 the Spring portlets show an Unsatisfied dependency error
legacy Troubleshooting
Issue After updating to DXP 7.2 FP dxp-13 the Spring portlets show an Unsatisfied dependency error. The trace is: ERROR [fileinstall-directory-watcher][ContextLoader:350] Context initialization failed...