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Configuring Unicast over TCP
Official Documentation
Configuring Unicast over TCP If your network configuration or the geographical distance between cluster nodes prevents you from using UDP Multicast clustering, you can configure TCP Unicast. You...
Configuring Containers
Official Documentation
Configuring Containers Everything that is configurable in a Liferay installation is configurable in a Liferay Docker container. Here are the most common things to configure: JVM Options Portal...
Portal Properties
Portal Properties Configuration options are specified using Portal Properties, sets of name/value pairs read from properties files and Docker environment variables on server startup. Default values...
AWS Managed Resources Reference
Official Documentation
AWS Managed Resources Reference By default, Liferay uses several managed services to run background operations when hosting in AWS. These resources facilitate the provisioning and continued use of...
Optimizing Sites
Official Documentation
Optimizing Sites From having top-tier SEO, to understanding and acting on your site's content, to building a site that is accessible to all types of users, Liferay provides tools for identifying...
JSON Web Tokens (JWTs)
Official Documentation
JSON Web Tokens (JWTs) JSON Web Tokens (JWTs) represent encoded data. They are compact, self-contained, and secure. There are two primary types of JSON Web Tokens: Encrypted JWT: ensures the...
Activating Liferay DXP
Official Documentation
Activating Liferay DXP Subscription Required Liferay DXP is activated using an XML (.xml) activation key. It specifies your DXP subscription terms or trial agreement. When you run Liferay DXP for...
Using the AWS Chart to Run Liferay in AWS
Official Documentation
Using the AWS Chart to Run Liferay in AWS Using the AWS chart is a CLI-only method for provisioning Liferay in AWS. Launch Liferay Set and export an environment variable to hold the Liferay AWS...
Client Secret JWT
Official Documentation
Client Secret JWT Liferay supports client secret JWT as an authentication method for OAuth 2 clients. In this flow, the client itself creates the assertion and signs it using the client secret....
java.lang.RuntimeException: com.liferay.portal.lpkg.deployer.LPKGVerifyException: LPKG validation failed
legacy Troubleshooting
Issue Why "LPKGVerify RuntimeException" triggers? SEVERE: Exception sending context initialized event to listener instance of class com.liferay.portal.spring.context.PortalContextLoaderListener...
Can not start Liferay after upgrading to jdk 11 with "java.lang.ClassNotFoundException: jdk.internal.reflect.MethodAccessorImpl cannot be found" reported
legacy Troubleshooting
Issue After upgrading to JDK 11, the server can not be started due to the following error: 2020-03-16 16:47:50.470 ERROR [Start Level: Equinox Container:...
java.lang.RuntimeException: Unable to install analysis-icu plugin error when starting Liferay using an embedded Elasticsearch
legacy Troubleshooting
Issue The error java.lang.RuntimeException: Unable to install analysis-icu plugin error is produced when starting Liferay using an embedded Elasticsearch This error prevents the embedded Elasticsearch to start correctly....
java.lang.StringIndexOutOfBoundsException: begin 0, end -1, length 1
legacy Troubleshooting
Issue While upgrading to Liferay DXP 7.4, following errors were observed in the logs: ERROR [http-nio-8080-exec-21][OpenIdConnectSessionValidationFilter:53] java.lang.StringIndexOutOfBoundsException: begin 0, end...
org.apache.catalina.core.StandardContext.listenerStart Exception sending context initialized event to listener instance of class [com.sun.proxy.$Proxy6] java.lang.reflect.UndeclaredThrowableException
legacy Troubleshooting
Issue When setting up Liferay with Oracle 19c, the following errors were encountered during Liferay startup. 2024-02-19 11:39:07.830 INFO [main][ModuleFrameworkImpl:1309] Starting initial bundles 19-Feb-2024...
java.lang.ClassCastException: class javax.mail.Session cannot be cast to class javax.mail.Session error when configuring email delivery using JNDI
legacy Troubleshooting
Issue We have configured email delivery using the application server JNDI mail resource, adding the following property to the portal-ext.properties file mail.session.jndi.name=mail/Session  We followed this Liferay...
java.lang.ClassNotFoundException: org.hibernate.proxy.HibernateProxy cannot be found when blob column is used in service builder
legacy Troubleshooting
Issue I use a blob column type in service builder. On deployment i get Caused by: java.lang.ClassNotFoundException: org.hibernate.proxy.HibernateProxy cannot be found Environment 7.4 Resolution Add the followings...
Troubleshooting java.lang.NoClassDefFoundError/java.lang.ClassNotFoundException
legacy Troubleshooting
Issue java.lang.NoClassDefFoundError or java.lang.ClassNotFoundException on portal startup only. Environment Portal containing custom modules including optional dependencies. Resolution Review the deployed...
Index is accessed at startup might result in [HTTP/1.1 404 Not Found]
legacy Troubleshooting
Issue You might encounter a behavior where Liferay tries accessing certain indexes that had a different name in previous versions. Normally this is not causing any issues, however you might have specific...
'TemplateNode cannot be cast to java.lang.String' error when using certain words in structures
legacy
Issue We have a structure that has a field called 'type' and being referenced in the advanced settings When we try to preview it, we get the above-mentioned exception in our logs Environment Liferay DXP...
Unable to bind to the LDAP server javax.naming.CommunicationException: [Root exception is java.lang.ClassNotFoundException: javax.net.ssl.SSLSocketFactory cannot be found by com.liferay.saml.web_
legacy Troubleshooting
Issue During the time of portal login using the LDAP users, the user('s) are able to log in successfully, LDAP connections have an active connection but observed the below warnings in the Liferay log.  2021-12-17...