# Add Liquibase extension to Keycloak **URL:** \ **Category:** Configuring the server\ **Created:** [September 1, 2020, 11:58am UTC](https://forum.keycloak.org/t/add-liquibase-extension-to-keycloak/4627 "2020-09-01T11:58:35Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![Rahman](https://avatars.discourse-cdn.com/v4/letter/r/c0e974/32.png) [@Rahman](https://forum.keycloak.org/u/Rahman)\ **Post date:** [September 1, 2020, 11:58am UTC](https://forum.keycloak.org/t/add-liquibase-extension-to-keycloak/4627/1 "2020-09-01T11:58:35Z")
I am trying to use the Keycloak with a non-standard database TERADATA-DB. Liquibase Extensions, extend Liquibase database support and capabilities, Teradata is listed as an available extension for liquibase. https://liquibase.jira.com/wiki/spaces/CONTRIB/pages/1998865/Available+Extensions While trying Liquibase as a standalone along with Teradata extension without Keycloak, the keycloak tables are getting generated in the Teradata database. Liquibase extensions are not bundled by default in Keycloak, I have tried to add extension jar in module as below > Blockquote ``` ``` > Blockquote but while keycloak startup I am getting below error, > Blockquote > 17:05:45,069 INFO [org.jboss.as.clustering.infinispan] (ServerService Thread Pool – 66) WFLYCLINF0002: Started realmRevisions cache from keycloak container > 17:05:45,077 INFO [org.jboss.as.clustering.infinispan] (ServerService Thread Pool – 66) WFLYCLINF0002: Started userRevisions cache from keycloak container > 17:05:45,096 INFO [org.jboss.as.clustering.infinispan] (ServerService Thread Pool – 66) WFLYCLINF0002: Started authorizationRevisions cache from keycloak container > 17:05:45,097 INFO [org.keycloak.connections.infinispan.DefaultInfinispanConnectionProviderFactory] (ServerService Thread Pool – 66) Node name: winsr186001-m4p, Site name: null > 17:05:47,988 ERROR [stderr] (ServerService Thread Pool – 66) WARNING 01/09/20, 5:05 PM: liquibase: Unknown database: Teradata > 17:05:48,079 WARN [org.keycloak.connections.jpa.updater.liquibase.lock.LiquibaseDBLockProvider] (ServerService Thread Pool – 66) Failed to rollback connection after error: java.sql.SQLException: IJ031040: Connection is not associated with a managed connection: org.jboss.jca.adapters.jdbc.jdk8.WrappedConnectionJDK8@45617e70 > at org.jboss.ironjacamar.jdbcadapters@1.4.20.Final//org.jboss.jca.adapters.jdbc.WrappedConnection.lock(WrappedConnection.java:173) > at org.jboss.ironjacamar.jdbcadapters@1.4.20.Final//org.jboss.jca.adapters.jdbc.WrappedConnection.rollback(WrappedConnection.java:915) > at org.keycloak.keycloak-model-jpa@10.0.2//org.keycloak.connections.jpa.updater.liquibase.lock.LiquibaseDBLockProvider.safeRollbackConnection(LiquibaseDBLockProvider.java:178) > at org.keycloak.keycloak-model-jpa@10.0.2//org.keycloak.connections.jpa.updater.liquibase.lock.LiquibaseDBLockProvider.lambda$null$1(LiquibaseDBLockProvider.java:120) > at org.keycloak.keycloak-common@10.0.2//org.keycloak.common.util.Retry.executeWithBackoff(Retry.java:92) > at org.keycloak.keycloak-model-jpa@10.0.2//org.keycloak.connections.jpa.updater.liquibase.lock.LiquibaseDBLockProvider.lambda$waitForLock$2(LiquibaseDBLockProvider.java:108) > at org.keycloak.keycloak-server-spi-private@10.0.2//org.keycloak.models.utils.KeycloakModelUtils.suspendJtaTransaction(KeycloakModelUtils.java:682) > at org.keycloak.keycloak-model-jpa@10.0.2//org.keycloak.connections.jpa.updater.liquibase.lock.LiquibaseDBLockProvider.waitForLock(LiquibaseDBLockProvider.java:94) > at org.keycloak.keycloak-services@10.0.2//org.keycloak.services.resources.KeycloakApplication$1.run(KeycloakApplication.java:145) > at org.keycloak.keycloak-server-spi-private@10.0.2//org.keycloak.models.utils.KeycloakModelUtils.runJobInTransaction(KeycloakModelUtils.java:227) > at org.keycloak.keycloak-services@10.0.2//org.keycloak.services.resources.KeycloakApplication.startup(KeycloakApplication.java:138) > at org.keycloak.keycloak-wildfly-extensions@10.0.2//org.keycloak.provider.wildfly.WildflyPlatform.onStartup(WildflyPlatform.java:29) > at org.keycloak.keycloak-services@10.0.2//org.keycloak.services.resources.KeycloakApplication.(KeycloakApplication.java:125) > at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) > at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) > at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) > at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490) > at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.core.ConstructorInjectorImpl.construct(ConstructorInjectorImpl.java:152) > at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.spi.ResteasyProviderFactory.createProviderInstance(ResteasyProviderFactory.java:2805) > at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.spi.ResteasyDeployment.createApplication(ResteasyDeployment.java:369) > at org.jboss.resteasy.resteasy-jaxrs@3.11.2.Final//org.jboss.resteasy.spi.ResteasyDeployment.startInternal(ResteasyDeployment.java:281) > Blockquote Pl help me on this.