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Liferay DXP is a robust platform with its own navigation menus, configuration methods, and core features. These core features are foundational to effective system administration, maintenance, notifications, and other core platform functions.

Feature
Deployment Approach
How to perform some actions when an OSGi module is started/stopped
legacy How To
Issue I would like to perform some actions when my OSGi module is started/stopped. How can I achieve that? Environment Liferay DXP 7.0+ Resolution NOTE: The following resolution requires customization and should only...
Alternative to using the Registry API in Liferay DXP 7.4
legacy How To
Issue Upgrading from Liferay DXP 7.3 to 7.4 can found issues with a custom module that overrides jsp files and uses the Core Registry API...
JS file caching
legacy
Issue How to enable the cache for the JS file? On each page refresh, all default JS is getting called, impacting site performance. Environment Liferay Paas Liferay Quarterly Release Resolution While refreshing the...
Error: HikariPool-1 - Failed to validate connection org.postgresql.jdbc.PgConnection@xxxxxx (This connection has been closed.). Possibly consider using a shorter maxLifetime value
legacy Troubleshooting
Issue Facing the following error in the logs and the Liferay node became unresponsive: HikariPool-1 - Failed to validate connection org.postgresql.jdbc.PgConnection@6c009ca1 (This connection has been...
Framework Event Dispatcher error is seen reporting missing packages when trying to connect an upgraded database to a new environment
legacy Troubleshooting
Issue After upgrading to a Liferay Quarterly Release version and trying to connect the upgraded database to the production environment, a Framework Event Dispatcher error is seen reporting missing...
Workflow Related APIs
legacy How To
Issue Retrieve all task details associated with a specific user via API. Retrieve task details filtered by workflow and user via API. Perform actions such as 'Approve' and 'Reject' on tasks via API. Environment...
Performance issues while automatically propagating default fragments changes during deploy process
legacy Troubleshooting
Issue Facing slowness issues when trying to add/edit a content page (other types of pages work fine). The slowness is observed when starting the portal and trying to add/edit the content page. After...
Can we retrieve the list of Collections/ContentSets' names using headless API?
legacy Troubleshooting
Issue Using Liferay's headless-delivery API, it’s not possible to retrieve Collections' (referred as ContentSets in the API) names. The user wants to retrieve the collection by its name. There is a similar feature for...
Deploy Liferay DXP 7.4 as a Service
legacy How To
Issue How do you deploy Liferay as a service in Linux? Environment Liferay DXP 7.4 Quarterly Release Prerequisites Need Root user level. Resolution Create liferay.service file as root user in...
Show event of one person to another person
legacy
Issue There is a requirment wherein some users that belongs to higher authority sets their events in their respective calendar and 1 user who is secretory has to see the calendar of higher authority users one...
com.liferay.expando.kernel.model.ExpandoBridge cannot be found after upgrading to Quarterly Release
legacy Troubleshooting
Issue After upgrading to Liferay Quarterly Release 2024.Q1.1, the portal logs are displaying an error related to Commerce: ERROR [SystemExecutorServiceUtil-1][ROOT:47] bundle...
How to check cxf-core jar version?
legacy How To
Issue How can users check the cxf-core jar version in DXP?  Environment Liferay DXP [All versions/updates] Resolution To verify the version of org.apache.cxf, use the following command in the gogo shell: ss -s |...
HotDeployException thrown at startup sometimes for some of our custom portlets
legacy Troubleshooting
Issue we have a problem with our portlets. Sometimes when we restart Liferay, some portlets are failing to deploy. We do not have exact scenario. It can happen for any of our portlet during restart. Here is exception that...
Unable to start Liferay Portal with error: Current URL / generates exception: java.lang.NullPointerException
legacy Troubleshooting
Issue I am unable to start my Liferay Portal. The following errors are present in the log.  2024-11-19 05:16:09.815 ERROR [main][BundleStartStopLogger:62] file:/opt/liferay/osgi/modules/activation.jar has a null...
In Liferay DXP 2023.q4.4, clustered environment fails to load additional nodes
legacy Troubleshooting
Issue When using Liferay DXP 2023.q4.4 deployed in an environment, the initial node loads up without any issues, but any additional nodes result with the following traces: In JBoss EAP 7.4 Update 17: 2024-10-05...
Receiving the 'Unable to parse upload request' when try to upload folder
legacy Troubleshooting
Issue Receiving the error in the logs when trying to upload the folder using the custom module. Steps to reproduce: 1. Start the server. 2. Deploy the sample portlet for uploading the folder in the bundle. 3....
Getting dozens of "BundleException: A bundle is already installed with the name XXX" errors on sever startup
legacy Troubleshooting
Issue When starting the server, multiple messages similar to the following are logged, indicating failed module installations (typically after an upgrade): 2024-11-19 10:05:39.082 ERROR...
Filtering objects by their NestedFields.
legacy Troubleshooting
Issue Having a relationship between two objects A and B. It is possible to make queries to the /o/c/as api filtering by a field of object B as nestedField. curl -X 'GET' \...
Is Liferay vulnerable to CVE-2024-7254?
legacy Troubleshooting
Issue I would like to know if Liferay is vulnerable to CVE-2024-7254. Is Liferay affected by CVE-2024-7254? This article outlines the concerns of CVE-2024-7254 vulnerability with respect to the Liferay DXP. Environment...
Upgrade Failed due to the Error "No User exists with the primary key..."
legacy Troubleshooting
Issue When doing the database upgrade from 7.2 DXP-20 to Liferay DXP 7.4 QR 2024.Q3.0, the upgrade can fail with the following error: ERROR [main][UpgradeExecutor:333] Failed upgrade process for module...