Compatibility of RH-SSO with Oracle 18c/19c database

Solution Unverified - Updated -

Issue

  • Compatibility with database
  • Connection to database fails on startup with error like:

    13:47:56,781 WARN  [org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator] (ServerService Thread Pool -- 54) HHH000342: Could not obtain connection to query metadata : Unable to determine Dialect to use [name=Oracle, majorVersion=18]; user must register resolver or explicitly set 'hibernate.dialect'
    13:47:56,875 ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool -- 54) MSC000001: Failed to start service jboss.deployment.unit."keycloak-server.war".undertow-deployment: org.jboss.msc.service.StartException in service jboss.deployment.unit."keycloak-server.war".undertow-deployment: java.lang.RuntimeException: RESTEASY003325: Failed to construct public org.keycloak.services.resources.KeycloakApplication(javax.servlet.ServletContext,org.jboss.resteasy.core.Dispatcher)
    …
    Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
    …
    Caused by: java.lang.RuntimeException: RESTEASY003325: Failed to construct public org.keycloak.services.resources.KeycloakApplication(javax.servlet.ServletContext,org.jboss.resteasy.core.Dispatcher)
    …
    Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
    

Environment

  • Red Hat Single Sign-On (RH-SSO)
    • 7
  • Oracle Database
    • 18c
    • 19c

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