ORA-03113: end-of-file error inconsitently from Oracle AQ operation

Question

Hi
Here is the weird error we get when we use any Oracle AQ operation. This is very very inconsistent. This is the final pl/sql level code called from sqlplus. Exact code works sometimes and fails other times. We have no explanation why or what we are doing wrong. Any help/ideas from anyone will help
Thanks
sqlplus details:
SQL*Plus: Release 9.2.0.1.0 - Production on Wed Jul 23 14:37:56 2003
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to:
Oracle9i Enterprise Edition Release 9.2.0.1.0 - Production
SQL> connect txg/xxxxxx@joep2k
Connected.
SQL> declare
2
3 enqueue_options DBMS_AQ.enqueue_options_t;
4 message_properties DBMS_AQ.message_properties_t;
5 message_handle RAW(16);
6 message pt_transaction;
7
8 BEGIN
9
10 -- Message := pt_transaction(0,
11 -- p_trans_type, p_country, p_account_id, p_io_id,
12 -- p_core_obj_id, p_orig_trans_id);
13
14 message := pt_transaction(0,
15 2, 'US', 5, 131811,
16 1639956, 0);
17
18 message_properties.priority := 40;
19
20 begin
21 DBMS_AQ.ENQUEUE(queue_name => 'txg.tg_q_transaction',
22 Enqueue_options => enqueue_options,
23 Message_properties => message_properties,
24 Payload => message,
25 Msgid => message_handle);
26 end;
27
28 END;
29 /
declare
ERROR at line 1:
ORA-03113: end-of-file on communication channel

Answer 1

I don't think this would help, but we experienced similar strange behavior on 9.2.0.3 running on HP unix. We were simply not able to stop queue: issuing command dbms_admadm.stop_queue(... resulted in error "Not connected". Seems to me like AQ daemon problem - restart of something. We didn't check logs and since user tests are running and queue itself works, even didn't restart database.
But you can check logs and tracefiles for any weird messages.
Also these two database options comes in mind:
-- setup "aq_tm_processes" at least to 4 (because of some bug)
-- same applies to "job_queue_processes" (also at least 4)
Let me know if it works.
Myrra