Keycloak deployment failed with DB2

Hi Team,

I am trying to run keycloak 15.0.2 ver with DB2 database. After creating the user keycloak in DB2 and jdbc driver configuration in module.xml and standalone.xml it gives me error “DB2 SQL Error: SQLCODE=-613, SQLSTATE=54008” when I run keycloak

2022-02-02 04:28:32,127 ERROR [org.keycloak.connections.jpa.updater.liquibase.conn.DefaultLiquibaseConnectionProvider] (ServerService Thread Pool -- 58) Change Set META-INF/jpa-changelog-2.5.0.xml::2.5.0-unicode-other-dbs::hmlnarik@redhat.com failed.  Error: DB2 SQL Error: SQLCODE=-613, SQLSTATE=54008, SQLERRMC=UK_RU8TT6T700S9V50BU18WS5HA6, DRIVER=4.28.11 [Failed SQL: ALTER TABLE KEYCLOAK.USER_ENTITY ADD CONSTRAINT UK_RU8TT6T700S9V50BU18WS5HA6 UNIQUE (REALM_ID, USERNAME)]
2022-02-02 04:28:32,127 ERROR [org.keycloak.connections.jpa.updater.liquibase.LiquibaseJpaUpdaterProvider] (ServerService Thread Pool -- 58) Error has occurred while updating the database: liquibase.exception.MigrationFailedException: Migration failed for change set META-INF/jpa-changelog-2.5.0.xml::2.5.0-unicode-other-dbs::hmlnarik@redhat.com:
     Reason: liquibase.exception.DatabaseException: DB2 SQL Error: SQLCODE=-613, SQLSTATE=54008, SQLERRMC=UK_RU8TT6T700S9V50BU18WS5HA6, DRIVER=4.28.11 [Failed SQL: ALTER TABLE KEYCLOAK.USER_ENTITY ADD CONSTRAINT UK_RU8TT6T700S9V50BU18WS5HA6 UNIQUE (REALM_ID, USERNAME)]

2022-02-02 04:28:32,460 INFO  [org.infinispan.manager.DefaultCacheManager] (ServerService Thread Pool -- 77) Stopping cache manager null on null
2022-02-02 04:28:32,462 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("add") failed - address: ([("subsystem" => "metrics")]): java.lang.NullPointerException: Cannot invoke "org.jboss.msc.service.ServiceController.getValue()" because "serviceController" is null
        at org.wildfly.extension.metrics@23.0.2.Final//org.wildfly.extension.metrics.MetricsSubsystemAdd$2.execute(MetricsSubsystemAdd.java:91)
        at org.jboss.as.controller@15.0.1.Final//org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:1040)
        at org.jboss.as.controller@15.0.1.Final//org.jboss.as.controller.AbstractOperationContext.processStages(AbstractOperationContext.java:779)
        at org.jboss.as.controller@15.0.1.Final//org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:468)
        at org.jboss.as.controller@15.0.1.Final//org.jboss.as.controller.OperationContextImpl.executeOperation(OperationContextImpl.java:1415)
        at org.jboss.as.controller@15.0.1.Final//org.jboss.as.controller.ModelControllerImpl.boot(ModelControllerImpl.java:529)
        at org.jboss.as.controller@15.0.1.Final//org.jboss.as.controller.AbstractControllerService.boot(AbstractControllerService.java:515)
        at org.jboss.as.controller@15.0.1.Final//org.jboss.as.controller.AbstractControllerService.boot(AbstractControllerService.java:477)
        at org.jboss.as.server@15.0.1.Final//org.jboss.as.server.ServerService.boot(ServerService.java:459)
        at org.jboss.as.server@15.0.1.Final//org.jboss.as.server.ServerService.boot(ServerService.java:412)
        at org.jboss.as.controller@15.0.1.Final//org.jboss.as.controller.AbstractControllerService$1.run(AbstractControllerService.java:416)
        at java.base/java.lang.Thread.run(Thread.java:832)

2022-02-02 04:28:32,466 ERROR [org.jboss.as.server] (ServerService Thread Pool -- 43) WFLYSRV0022: Deploy of deployment "keycloak-server.war" was rolled back with no failure message
2022-02-02 04:28:32,481 INFO  [org.jboss.as] (MSC service thread 1-6) WFLYSRV0050: Keycloak 15.0.2 (WildFly Core 15.0.1.Final) stopped in 337ms

Can anyone help with this ?

Thanks,
Karan