Step 1. Try to add a data-source with missing information [standalone@localhost:9990 /] /subsystem=datasources/data-source=XXX:add(jndi-name=java:/XXX, datasource-class=XXX,driver-name=h2) "outcome" => "failed" , "failure-description" => { "WFLYCTL0080: Failed services" => { "org.wildfly.data-source.XXX" => "org.jboss.msc.service.StartException in service org.wildfly.data-source.XXX: WFLYJCA0033: Error during the deployment of XXX Caused by: org.jboss.msc.service.StartException in anonymous service: WFLYJCA0032: Unable to start the ds because it generated more than one cf"}, "WFLYCTL0412: Required services that are not installed:" => [ "org.wildfly.data-source.XXX" ], "WFLYCTL0180: Services with missing/unavailable dependencies" => undefined }, "rolled-back" => true } There will be exception in server log: 23:47:24,962 ERROR [org.jboss.as.connector.subsystems.datasources.AbstractDataSourceService$AS7DataSourceDeployer] (MSC service thread 1-5) Error during the deployment of java:/XXX: javax.resource.ResourceException: IJ031103: At least one connection property must be defined for datasource-class: XXX at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createConnectionFactory(LocalManagedConnectionFactory.java:108) at org.jboss.jca.deployers.common.AbstractDsDeployer.deployDataSource(AbstractDsDeployer.java:775) at org.jboss.jca.deployers.common.AbstractDsDeployer.createObjectsAndInjectValue(AbstractDsDeployer.java:312) at org.jboss.as.connector.subsystems.datasources.AbstractDataSourceService$AS7DataSourceDeployer.deploy(AbstractDataSourceService.java:371) at org.jboss.as.connector.subsystems.datasources.AbstractDataSourceService.start(AbstractDataSourceService.java:149) at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1948) at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1881) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang. Thread .run( Thread .java:745) 23:47:24,964 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-5) MSC000001: Failed to start service org.wildfly.data-source.XXX: org.jboss.msc.service.StartException in service org.wildfly.data-source.XXX: WFLYJCA0033: Error during the deployment of XXX at org.jboss.as.connector.subsystems.datasources.AbstractDataSourceService.start(AbstractDataSourceService.java:163) at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1948) at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1881) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang. Thread .run( Thread .java:745) Caused by: org.jboss.msc.service.StartException in anonymous service: WFLYJCA0032: Unable to start the ds because it generated more than one cf at org.jboss.as.connector.subsystems.datasources.AbstractDataSourceService.start(AbstractDataSourceService.java:151) ... 5 more 23:47:24,968 ERROR [org.jboss.as.controller.management-operation] (management-handler-thread - 2) WFLYCTL0013: Operation ( "add" ) failed - address: ([ ( "subsystem" => "datasources" ), ( "data-source" => "XXX" ) ]) - failure description: { "WFLYCTL0080: Failed services" => { "org.wildfly.data-source.XXX" => "org.jboss.msc.service.StartException in service org.wildfly.data-source.XXX: WFLYJCA0033: Error during the deployment of XXX Caused by: org.jboss.msc.service.StartException in anonymous service: WFLYJCA0032: Unable to start the ds because it generated more than one cf"}, "WFLYCTL0412: Required services that are not installed:" => [ "org.wildfly.data-source.XXX" ], "WFLYCTL0180: Services with missing/unavailable dependencies" => undefined } Step 2. Fulfill the missing information: [standalone@localhost:9990 /] /subsystem=datasources/data-source=XXX:add(jndi-name=java:/XXX, driver-name=h2,connection-url= "jdbc:h2:test" ) { "outcome" => "success" } Step 3. Call test-connection-in-pool() operation of this created data-source [standalone@localhost:9990 /] /subsystem=datasources/data-source=XXX:test-connection-in-pool() { "outcome" => "failed" , "failure-description" => "WFLYJCA0040: failed to invoke operation: WFLYJCA0047: Connection is not valid" , "rolled-back" => true } There will be warning of exception in server log: 10:30:39,185 WARN [org.jboss.jca.core.connectionmanager.pool.strategy.OnePool] (management-handler-thread - 3) IJ000604: Throwable while attempting to get a new connection: null : javax.resource.ResourceException: IJ031084: Unable to create connection at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createLocalManagedConnection(LocalManagedConnectionFactory.java:345) at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.getLocalManagedConnection(LocalManagedConnectionFactory.java:352) at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createManagedConnection(LocalManagedConnectionFactory.java:287) at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedDequeManagedConnectionPool.createConnectionEventListener(SemaphoreConcurrentLinkedDequeManagedConnectionPool.java:1320) at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedDequeManagedConnectionPool.getConnection(SemaphoreConcurrentLinkedDequeManagedConnectionPool.java:496) at org.jboss.jca.core.connectionmanager.pool.AbstractPool.internalTestConnection(AbstractPool.java:1052) at org.jboss.jca.core.connectionmanager.pool.strategy.OnePool.testConnection(OnePool.java:93) at org.jboss.as.connector.subsystems.common.pool.PoolOperations$TestConnectionInPool.invokeCommandOn(PoolOperations.java:234) at org.jboss.as.connector.subsystems.common.pool.PoolOperations$1.execute(PoolOperations.java:90) at org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:940) at org.jboss.as.controller.AbstractOperationContext.processStages(AbstractOperationContext.java:683) at org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:382) at org.jboss.as.controller.OperationContextImpl.executeOperation(OperationContextImpl.java:1363) at org.jboss.as.controller.ModelControllerImpl.internalExecute(ModelControllerImpl.java:410) at org.jboss.as.controller.ModelControllerImpl.execute(ModelControllerImpl.java:232) at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler.doExecute(ModelControllerClientOperationHandler.java:213) at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler.access$300(ModelControllerClientOperationHandler.java:136) at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1$1.run(ModelControllerClientOperationHandler.java:157) at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1$1.run(ModelControllerClientOperationHandler.java:153) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.jboss.as.controller.AccessAuditContext.doAs(AccessAuditContext.java:149) at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1.execute(ModelControllerClientOperationHandler.java:153) at org.jboss.as.protocol.mgmt.ManagementRequestContextImpl$1.doExecute(ManagementRequestContextImpl.java:70) at org.jboss.as.protocol.mgmt.ManagementRequestContextImpl$AsyncTaskRunner.run(ManagementRequestContextImpl.java:160) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang. Thread .run( Thread .java:745) at org.jboss.threads.JBossThread.run(JBossThread.java:320) Caused by: javax.resource.ResourceException: IJ031087: Failed to register DriverClass for : org.h2.Driver at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.getDriver(LocalManagedConnectionFactory.java:602) at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createLocalManagedConnection(LocalManagedConnectionFactory.java:320) ... 28 more Caused by: java.lang.IllegalStateException at org.jboss.msc.value.InjectedValue.getValue(InjectedValue.java:47) at org.jboss.as.connector.subsystems.datasources.AbstractDataSourceService.driverClassLoader(AbstractDataSourceService.java:310) at org.jboss.as.connector.subsystems.datasources.AbstractDataSourceService.access$200(AbstractDataSourceService.java:103) at org.jboss.as.connector.subsystems.datasources.AbstractDataSourceService$AS7DataSourceDeployer$2.getClassLoader(AbstractDataSourceService.java:472) at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.getDriver(LocalManagedConnectionFactory.java:593) ... 29 more NOTE Run a :reload() after Step 1 works fine Same data-source name with different jndi-name works fine Different data-source name with same jndi-name fails.