In a Multiconsumer queue when I use listen() I get error ORA-00600

Question

I created a queue table
SYS.DBMS_AQADM.CREATE_QUEUE_TABLE
QUEUE_TABLE => 'TEST_QUEUE_TAB'
,QUEUE_PAYLOAD_TYPE => 'TEST_TYPE'
,COMPATIBLE => '8.1'
,SORT_LIST => 'ENQ_TIME'
,*MULTIPLE_CONSUMERS => TRUE*
,MESSAGE_GROUPING => 0
End;
This is my C# code that I am using to dequeue message synchronously in a mutli consumer queue using ODP. I am getting Oracle exception ORA-00600 in the OracleAQQueue.Listen() method. Any help I would greatly appreciate it.
try
string connString = "Data Source=XXX;User Id=XXX; Password=XXX";
OracleConnection connObj = new OracleConnection(connString);
connObj.Open();
//create a new queue object
OracleAQQueue queueObj = new OracleAQQueue("TEST_QUEUE", connObj);
queueObj.MessageType = OracleAQMessageType.Udt;
queueObj.UdtTypeName = "TEST_TYPE";
queueObj.NotificationConsumers = new string[1] { "OPTEST" };
queueObj.DequeueOptions.Visibility = OracleAQVisibilityMode.OnCommit;
queueObj.DequeueOptions.ConsumerName = "OPTEST";
queueObj.NotificationConsumers = new string[]{ "OPTEST" };
queueObj.DequeueOptions.Wait = 100;
string[] listenConsumers = new string[1] { "OPTEST" };
queueObj.Listen(listenConsumers);
catch(Exception ex)
MessageBox.Show(ex.ToString());
}

Answer 1

ORA-00600, by definition, is an unhandled error in the Oracle database's internal code.
Open a Support Request (SR) with Oracle or, if you do not have access, have your DBA or a senior developer do it for you.
It is Oracle's responsibility to fix this ... not yours.