Hi all,
I am getting following error in api-gateway node. What could be the reason
behind this exception?

TID: [0] [AM] [2015-02-20 02:03:25,611]  INFO {org.wso2.carbon.user.core.
ldap.ReadWriteLDAPUserStoreManager} -  LDAP connection created successfully
in read-write mode {org.wso2.carbon.user.core.ldap.
ReadWriteLDAPUserStoreManager}
TID: [0] [AM] [2015-02-20 02:03:32,155] ERROR
{org.wso2.carbon.user.core.common.DefaultRealm} -  Cannot create
org.wso2.carbon.user.core.authorization.JDBCAuthorizationManager
{org.wso2.carbon.user.core.common.DefaultRealm}
java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
        at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
        at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
        at
org.wso2.carbon.user.core.common.DefaultRealm.createObjectWithOptions(DefaultRealm.java:329)
        at
org.wso2.carbon.user.core.common.DefaultRealm.initializeObjects(DefaultRealm.java:288)
        at
org.wso2.carbon.user.core.common.DefaultRealm.init(DefaultRealm.java:104)
        at
org.wso2.carbon.user.core.common.DefaultRealmService.initializeRealm(DefaultRealmService.java:223)
        at
org.wso2.carbon.user.core.common.DefaultRealmService.getTenantUserRealm(DefaultRealmService.java:170)
        at
org.wso2.carbon.registry.core.session.UserRegistry.init(UserRegistry.java:266)
        at
org.wso2.carbon.registry.core.session.UserRegistry.<init>(UserRegistry.java:226)
        at
org.wso2.carbon.registry.core.session.UserRegistry.<init>(UserRegistry.java:205)
        at
org.wso2.carbon.registry.core.jdbc.EmbeddedRegistryService.getUserRegistry(EmbeddedRegistryService.java:427)
        at
org.wso2.carbon.registry.core.jdbc.EmbeddedRegistryService.getRegistry(EmbeddedRegistryService.java:447)
        at
org.wso2.carbon.registry.core.jdbc.EmbeddedRegistryService.getRegistry(EmbeddedRegistryService.java:464)
        at
org.wso2.carbon.registry.indexing.IndexingManager.getRegistry(IndexingManager.java:208)
        at
org.wso2.carbon.registry.indexing.ResourceSubmitter.submitResource(ResourceSubmitter.java:119)
        at
org.wso2.carbon.registry.indexing.ResourceSubmitter.run(ResourceSubmitter.java:95)
        at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
        at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
        at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
        at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.IllegalStateException: The cache status is not STARTED
        at
org.wso2.carbon.caching.impl.CacheImpl.checkStatusStarted(CacheImpl.java:312)
        at org.wso2.carbon.caching.impl.CacheImpl.put(CacheImpl.java:359)
        at
org.wso2.carbon.user.core.authorization.PermissionTree.updatePermissionTree(PermissionTree.java:927)
        at
org.wso2.carbon.user.core.authorization.JDBCAuthorizationManager.isRoleAuthorized(JDBCAuthorizationManager.java:126)
        at
org.wso2.carbon.user.core.authorization.JDBCAuthorizationManager.addInitialData(JDBCAuthorizationManager.java:974)
        at
org.wso2.carbon.user.core.authorization.JDBCAuthorizationManager.<init>(JDBCAuthorizationManager.java:110)
        ... 25 more
TID: [0] [AM] [2015-02-20 02:03:32,156] ERROR
{org.wso2.carbon.user.core.common.DefaultRealmService} -  Cannot initialize
the realm. {org.wso2.carbon.user.core.common.DefaultRealmService}
org.wso2.carbon.user.core.UserStoreException: nullType class
java.lang.reflect.InvocationTargetException
        at
org.wso2.carbon.user.core.common.DefaultRealm.createObjectWithOptions(DefaultRealm.java:370)
        at
org.wso2.carbon.user.core.common.DefaultRealm.initializeObjects(DefaultRealm.java:288)
        at
org.wso2.carbon.user.core.common.DefaultRealm.init(DefaultRealm.java:104)
        at
org.wso2.carbon.user.core.common.DefaultRealmService.initializeRealm(DefaultRealmService.java:223)
        at
org.wso2.carbon.user.core.common.DefaultRealmService.getTenantUserRealm(DefaultRealmService.java:170)
        at
org.wso2.carbon.registry.core.session.UserRegistry.init(UserRegistry.java:266)
        at
org.wso2.carbon.registry.core.session.UserRegistry.<init>(UserRegistry.java:226)
        at
org.wso2.carbon.registry.core.session.UserRegistry.<init>(UserRegistry.java:205)
        at
org.wso2.carbon.registry.core.jdbc.EmbeddedRegistryService.getUserRegistry(EmbeddedRegistryService.java:427)
        at
org.wso2.carbon.registry.core.jdbc.EmbeddedRegistryService.getRegistry(EmbeddedRegistryService.java:447)
        at
org.wso2.carbon.registry.core.jdbc.EmbeddedRegistryService.getRegistry(EmbeddedRegistryService.java:464)
        at
org.wso2.carbon.registry.indexing.IndexingManager.getRegistry(IndexingManager.java:208)
        at
org.wso2.carbon.registry.indexing.ResourceSubmitter.submitResource(ResourceSubmitter.java:119)
        at
org.wso2.carbon.registry.indexing.ResourceSubmitter.run(ResourceSubmitter.java:95)
        at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
        at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
        at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
        at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
        at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
        at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
        at
org.wso2.carbon.user.core.common.DefaultRealm.createObjectWithOptions(DefaultRealm.java:329)
        ... 20 more
Caused by: java.lang.IllegalStateException: The cache status is not STARTED
        at
org.wso2.carbon.caching.impl.CacheImpl.checkStatusStarted(CacheImpl.java:312)
        at org.wso2.carbon.caching.impl.CacheImpl.put(CacheImpl.java:359)
        at
org.wso2.carbon.user.core.authorization.PermissionTree.updatePermissionTree(PermissionTree.java:927)
        at
org.wso2.carbon.user.core.authorization.JDBCAuthorizationManager.isRoleAuthorized(JDBCAuthorizationManager.java:126)
        at
org.wso2.carbon.user.core.authorization.JDBCAuthorizationManager.addInitialData(JDBCAuthorizationManager.java:974)
        at
org.wso2.carbon.user.core.authorization.JDBCAuthorizationManager.<init>(JDBCAuthorizationManager.java:110)
        ... 25 more
TID: [0] [AM] [2015-02-20 02:03:32,156] ERROR
{org.wso2.carbon.user.core.common.DefaultRealmService} -  Cannot initialize
the realm. {org.wso2.carbon.user.core.common.DefaultRealmService}
org.wso2.carbon.user.core.UserStoreException: Cannot initialize the realm.
        at
org.wso2.carbon.user.core.common.DefaultRealmService.initializeRealm(DefaultRealmService.java:231)
        at
org.wso2.carbon.user.core.common.DefaultRealmService.getTenantUserRealm(DefaultRealmService.java:170)
        at
org.wso2.carbon.registry.core.session.UserRegistry.init(UserRegistry.java:266)
        at
org.wso2.carbon.registry.core.session.UserRegistry.<init>(UserRegistry.java:226)
        at
org.wso2.carbon.registry.core.session.UserRegistry.<init>(UserRegistry.java:205)
        at
org.wso2.carbon.registry.core.jdbc.EmbeddedRegistryService.getUserRegistry(EmbeddedRegistryService.java:427)
        at
org.wso2.carbon.registry.core.jdbc.EmbeddedRegistryService.getRegistry(EmbeddedRegistryService.java:447)
        at
org.wso2.carbon.registry.core.jdbc.EmbeddedRegistryService.getRegistry(EmbeddedRegistryService.java:464)
        at
org.wso2.carbon.registry.indexing.IndexingManager.getRegistry(IndexingManager.java:208)
        at
org.wso2.carbon.registry.indexing.ResourceSubmitter.submitResource(ResourceSubmitter.java:119)
        at
org.wso2.carbon.registry.indexing.ResourceSubmitter.run(ResourceSubmitter.java:95)
        at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
        at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
        at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
        at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:744)
Caused by: org.wso2.carbon.user.core.UserStoreException: nullType class
java.lang.reflect.InvocationTargetException
        at
org.wso2.carbon.user.core.common.DefaultRealm.createObjectWithOptions(DefaultRealm.java:370)
        at
org.wso2.carbon.user.core.common.DefaultRealm.initializeObjects(DefaultRealm.java:288)
        at
org.wso2.carbon.user.core.common.DefaultRealm.init(DefaultRealm.java:104)
        at
org.wso2.carbon.user.core.common.DefaultRealmService.initializeRealm(DefaultRealmService.java:223)
        ... 17 more
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
        at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
        at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
        at
org.wso2.carbon.user.core.common.DefaultRealm.createObjectWithOptions(DefaultRealm.java:329)
        ... 20 more
Caused by: java.lang.IllegalStateException: The cache status is not STARTED
        at
org.wso2.carbon.caching.impl.CacheImpl.checkStatusStarted(CacheImpl.java:312)
        at org.wso2.carbon.caching.impl.CacheImpl.put(CacheImpl.java:359)
        at
org.wso2.carbon.user.core.authorization.PermissionTree.updatePermissionTree(PermissionTree.java:927)
        at
org.wso2.carbon.user.core.authorization.JDBCAuthorizationManager.isRoleAuthorized(JDBCAuthorizationManager.java:126)
        at
org.wso2.carbon.user.core.authorization.JDBCAuthorizationManager.addInitialData(JDBCAuthorizationManager.java:974)
        at
org.wso2.carbon.user.core.authorization.JDBCAuthorizationManager.<init>(JDBCAuthorizationManager.java:110)
        ... 25 more

Thanks

-- 
*Yashira Perera*
*Software Engineer *
*WSO2, Inc : * http://wso2.com
lean.enterprise.middleware

Mobile: +9471 716 6797
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