Fatal error 9001 in Identity Broker for Frontier chris21

As reported by customer:

We started to have an issue with the Unify Connector on Friday night.

The connection between UMC and IdM has failed with the following error;

30/10/2015 20:42:39        Warning        Adapterrequest to get entity from adapter space failed.        Adapter        "Adapter request to get attribute changes from adapter space 53e85508-7648-409c-bd3a-0737028eba29 failed with reason Warning: Fatal error 9001 occurred at Oct 30 2015  8:42PM. Note the error and time, and contact your system administrator

The rest of the error is listed below. Is this an error that you’ve seen before? Would you know how to resolve this?

We have UNIFY Identity Broker v3.0.6 service running.

Reason: System.Data.SqlClient.SqlException:Warning: Fatal error 9001 occurred at Oct 30 2015  8:42PM. Note the errorand time, and contact your system administrator.   at
System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean
breakConnection)   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject
stateObj)   at
System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand
cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler,
TdsParserStateObject stateObj)   at
System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName,
Boolean async)   at
System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result,
String methodName, Boolean sendToPipe)  at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()   at
Unify.Repository.ChangesItemContext.CreateContext(SqlConnection connection)   at
Unify.Framework.LinqWhereQuery`5.GetEnumerator()   at
System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()   at System.Linq.Enumerable.<DistinctIterator>d__7a`1.MoveNext()   at
Unify.Framework.EnumerableExtensions.<ProduceAutoPages>d__9`1.MoveNext()   at
System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()   at
System.Linq.Enumerable.<SelectManyIterator>d__14`2.MoveNext()   at
Unify.Framework.EnumerableExtensions.<ActionOnLast>d__16`1.MoveNext()   at
Unify.Framework.EnumerableExtensions.<ActionOnFirst>d__1c`1.MoveNext()   at
System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()   at Unify.Framework.ActionOnExceptionEnumerator`1.MoveNext()   at
Unify.Framework.EnumerableExtensions.<ActionOnLast>d__16`1.MoveNext()   at
System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)   at
Unify.Adapters.NovellIdentityManagerIdentityBrokerDriverAdapter.Publish(Guid
adapterId)   at
Unify.Adapters.NovellIdentityManagerIdentityBrokerDriverNotificationDecorator.Publish(Guid
adapterId)   at
Unify.Adapters.NovellIdentityManagerIdentityBrokerDriver.Publish(Guid
adapterId)   at SyncInvokePublish(Object ,
Object[] , Object[] )   at
System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance,
Object[] inputs, Object[]& outputs)   at
System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc&
rpc)   at
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc&
rpc)   at
System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage4(MessageRpc&
rpc)   at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean
isOperationContextSet)"