Oracle AQ订阅注册错误？

Question

我创建了以下Oracle队列，订户和注册：

begin
   dbms_aqadm.create_queue_table(
      queue_table => 'test_queue',
      multiple_consumers => true,
      queue_payload_type => 'sys.aq$_jms_map_message',
      compatible => '8.1.3',
      comment => 'Creating test queue table'
   );
   dbms_aqadm.create_queue(
      queue_name => 'test_queue',
      queue_table => 'test_queue',
      comment => 'Test Queue'
   );
   dbms_aqadm.start_queue(queue_name => 'test_queue');

   dbms_aqadm.add_subscriber(
      queue_name => 'test_queue',
      subscriber => sys.aq$_agent('plsql', null, null)
   );
   dbms_aq.register(
      reg_list => sys.aq$_reg_info_list(
         sys.aq$_reg_info(
            'test_queue:plsql',
            dbms_aq.namespace_aq,
            'plsql://p_queue_callback?PR=1',
            null
         )
      ),
      reg_count => 1
   );
end;

给定一个具有未捕获异常的回调过程：

create or replace procedure p_queue_callback (
   context raw,
   reginfo sys.aq$_reg_info,
   descr sys.aq$_descriptor,
   payload varchar2,
   payloadl number
)
is
   l_foo number;
begin
   -- Results in an ORA-01476: divisor is equal to zero runtime exception
   l_foo := 1 / 0;
end;

一旦消息入队并且调用过程，是否在任何地方记录或显示错误？或者回调程序是否会默默地失败？