Exception queue messages

is there anyway to dequeue exception queue messages
my main queue is multiconsumer
Message was edited by:
JAA

i ll answer my question
first set exception queue dequeue enable
BEGIN
dbms_aqadm.start_queue(queue_name => 'aq$_request_qt_e',dequeue => TRUE,enqueue => FALSE);
END;
then dequeue messages with null consumer name ;)

Similar Messages

Consume exception queue messages (Topic)

Hi,
Context : 1 topic - 2 consumers (BPEL consumers) A and B.
If A fails to consume a message, this message is sent to the exception queue even if B managed to consume it.
It's normal.
If I move this message from the exception queue to the original queue, it will be consumed by A and again by B.
Is it normal ?
I expected that the message would be only consumed by A ...
Is it possible ?
Thanks,
romain.

i ll answer my question
first set exception queue dequeue enable
BEGIN
dbms_aqadm.start_queue(queue_name => 'aq$_request_qt_e',dequeue => TRUE,enqueue => FALSE);
END;
then dequeue messages with null consumer name ;)

Message not moving to default exception queue when max retries reached

Hi
I've set up an advanced queue with max retrie of 5 but when the dequing fails the retry count increments but it never goes to the exception queue. The retry count stays at 6, msg_state = READY, deq_txn_id = RETRY_EXCEEDED. Any ideas?
-- drop queue if it exists
exec dbms_aqadm.stop_queue (queue_name => 'AQ$_JY_METER_ENABLE_QTAB_E');
exec dbms_aqadm.stop_queue (queue_name => 'JY_METER_ENABLE_QUE');
exec dbms_aqadm.drop_queue (queue_name => 'JY_METER_ENABLE_QUE') ;
exec dbms_aqadm.drop_queue_table( queue_table => 'JY_METER_ENABLE_QTAB');
-- create the payload for the messages
CREATE TYPE jy_meter_enablement_typ AS OBJECT
request_id                VARCHAR2(30) ,
request_system_code       VARCHAR2(20) ,
business_process_ref      VARCHAR2(20) ,
request_type_ref          VARCHAR2(20) ,
meter_serial_number       VARCHAR2(10) ,
message_request_content   CLOB
-- Create queue table.
-- This one has a sort list so items will be enqueued first based on priority and then based on enq_time
BEGIN
   dbms_aqadm.create_queue_table (queue_table        => 'JY_METER_ENABLE_QTAB',
                                  queue_payload_type => 'JY_METER_ENABLEMENT_TYP',
                                  multiple_consumers => TRUE ,
                                  sort_list          => 'priority,enq_time' ,
                                  comment            => 'Queue table to handle JY Meter Enablement messages');
END;
-- Create Queue based on table
BEGIN
-- retention time set 3600 seconds (ie 1 hour) so the message is kept on the queue for 1 hour after it has been dequeued.
   dbms_aqadm.create_queue (queue_name     => 'JY_METER_ENABLE_QUE',
                            queue_table    => 'JY_METER_ENABLE_QTAB' ,
                            max_retries    => 5 ,
                            retry_delay    => 2 ,
                            retention_time => 3600 ,
                            comment     => 'Queue to handle JY Meter Enablement messages in priority/enq_time order');
END;
-- start the queue
BEGIN
dbms_aqadm.start_queue (queue_name => 'JY_METER_ENABLE_QUE');
END ;
-- Add and register a subscriber to the queue to run the Dequeue procedure
BEGIN
   dbms_aqadm.add_subscriber (queue_name => 'EMO_METER_MGMT.JY_METER_ENABLE_QUE',
                              subscriber => SYS.AQ$_AGENT('JY_METER_ENABLE_QUE_SUBSCRIBER',
                                                          NULL,
                                                          NULL )
    dbms_aq.register (SYS.AQ$_REG_INFO_LIST(SYS.AQ$_REG_INFO('JY_METER_ENABLE_QUE:JY_METER_ENABLE_QUE_SUBSCRIBER',
                                                             DBMS_AQ.NAMESPACE_AQ,
                                                             'plsql://EMO_METER_MGMT.DEQUEUE.dequeue_jy_request',
                                                             HEXTORAW('FF'))),1);
END;
-- start the default exception queue
BEGIN
dbms_aqadm.start_queue(queue_name => 'EMO_METER_MGMT.AQ$_JY_METER_ENABLE_QTAB_E',
                        enqueue => FALSE,
                        dequeue => TRUE);
END ;
/Thanks

Sorry, forgot to add db version
select banner from v$version/
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
PL/SQL Release 11.2.0.2.0 - Production
CORE 11.2.0.2.0 Production
TNS for Linux: Version 11.2.0.2.0 - Production
NLSRTL Version 11.2.0.2.0 - Production
5 rows selected.

Business messages are not pushed back to the aq exception queue in case of errors

Hi,
I have the scenario, where I have configured the business events in ebs and implemented the soa interface which consumes the event message from wf_bpel_q.
SOA interface is able to pickup the messages succesfully and same message will be pushed back to the same queue with the status=READY in case of exceptions as well. Ideally as per default functionality of AQ, in case of errors, messages will be pushed to exception queue.
Please suggest why mesages are not pushed back to exception queue in case of errror scenarios with the status='Errored'. Please let me know what i have been missing here in the setup.
Regards,
Anjana

Hi Anjana,
I am not familiar with the SOA interface, so I can't help you in detail, but take a closer look to the following documents.
Doc ID 1374461.1 , Doc ID 1075611.1 , Doc ID 1356146.1
Maybe you hit a known bug ....
Hope that helps.

Message entering the exception queue instead of regular queue

Hi ,
First of all , hello everyone.
I'm new to streams technology and i found this forum that seem to be very helpful.
I have a problem - I defined a queue XYZ and then built a capture process queue that enters changes on some scheme to this queue.
The problem is that the changes enters the exception queue table aq$XYZ_table instead the regular queue table XYZ_table.
I checked the capture process and it seems working fine.
does anyone has a direction of why this problem happens?
thanks in advance,
Arnon

Hi ,
here is what i found in the trace file.
*** 2008-08-12 18:03:23.129
*** SERVICE NAME:(SYS$USERS) 2008-08-12 18:03:23.128
*** SESSION ID:(205.1) 2008-08-12 18:03:23.128
08/12/2008 18:03:23
*** 2008-08-13 02:01:07.154
knlc_ProcessMVDD-1: MISSING Streams multi-version data dictionary!!!
knlldmm: gdbnm=TEST.EVEN
knlldmm: objn=-40016372
knlldmm: objv=1
knlldmm: scn=3519960438
knlldmm: opnum=7
*** 2008-08-13 02:01:17.308
knlc_ProcessMVDD-1: MISSING Streams multi-version data dictionary!!!
knlldmm: gdbnm=TEST.EVEN
knlldmm: objn=-40016371
knlldmm: objv=1
knlldmm: scn=3519960509
knlldmm: opnum=7
*** 2008-08-14 02:01:33.888
knlc_ProcessMVDD-1: MISSING Streams multi-version data dictionary!!!
knlldmm: gdbnm=TEST.EVEN
knlldmm: objn=-40016358
knlldmm: objv=1
knlldmm: scn=3521410760
knlldmm: opnum=7
*** 2008-08-14 02:01:46.086
knlc_ProcessMVDD-1: MISSING Streams multi-version data dictionary!!!
knlldmm: gdbnm=TEST.EVEN
knlldmm: objn=-40016357
knlldmm: objv=1
knlldmm: scn=3521411166
knlldmm: opnum=7
i checked on this error and i found that i need to run DBMS_CAPTURE_ADM.PREPARE_TABLE_INSTANTIATION in order to fix it but it also didn't help , and the capture process still not working.

BPEL Process for AQ Exception Queue

Is there a way to configure AQ adapter to dequeue message from default exception queue. I have tried doing so but it fails to find the exception queue. If not then what are the better ways of handling exception messages for a multiconsumer queue.
I need to enqueue the messages from exception queue once the issue is resolved.
-AA

Any one who can help me on this ?
-AA

Dequeue from exception queue failing

i'm having trouble dequeueing a message that has been moved to the exception queue. i can 'see' the message by looking at the queue table using Toad, but any attempt to dequeue it using DBMS_AQ.DEQUEUE results in the procedure timing out without dequeuing the message. when i try to dequeue it explicitly, using the ID, the process hangs. either way, there are no error messages.
i'm using the default exception queue, which i have started and enabled for dequeue.
thanks in advance for any help, simon

after banging my head on the wall for three days, a shutdown and restart of the database solved this problem....

Exception queue

How can i tell what caused a message to go to the exception queue.
For instance say i have a message that has reached its expiration period and goes to the exception queue how would i be able to find out that the reason it went to the exception queue is because it had expired?
version 10g
select * from AQ$<queue_table> will show the reason why the message went to the exception queue.
Edited by: user457357 on May 6, 2009 5:37 PM

When you define a queue table and queue, there will be an exception queue there automatically - you can't avoid it being created.

Browsing Exception Queue

Hi there,
I have a JMS messaging arquitecture using the OJMS provider. I created one queue and as I've read, automatically an exception queue was created. I'm trying to browse that exception queue and list the messages in, but despite there are messages, the method getEnumeration() does not retrieve me anything. Anyone knows why?
I'm using Oracle 10.1.0.1.
Thanks in advance.
Carolina Antón
carolina.anton_at_gmail.com

Hi Henry,
Unless your concern is about Microsoft scheduling solution "PROJECT", you should post your thread in the appropriate forum in order to have an helpful hand.
Regards.
Guillaume Rouyre - MBA, MCP, MCTS

How to automatically empty the exception queue?

Hi.
I have an exception queue that contains over 140000 messages. Is there some way of making Oracle empty this queue on a regular basis? I have set "dequeue" to "disabled" because I am not interested in this queue's messages, but the queue just continues to grow larger and larger...
Any help would be very appreciated!
Regards,
-Christer

Is this really not possible? Do I have to make a trigger on the table or manually delete it to stop growing?

Exception Queue cleanup.

hi all,
i am using oracle 9i.
is there a way to automatically remove messages from the exception queue?
if so, what determines when this removal occurs?
Thanks ahead,
Lior.

i ll answer my question
first set exception queue dequeue enable
BEGIN
dbms_aqadm.start_queue(queue_name => 'aq$_request_qt_e',dequeue => TRUE,enqueue => FALSE);
END;
then dequeue messages with null consumer name ;)

Queue messages stalling

We have an oracle advanced queue which stores messages to be sent via email. A process picks them off and sends them onto our mail service. Something in the chain stalls occasionally, and nothing is dequeued to the exception queue. Everything on the queue has a retry count of 1 when it should try 5 times. The state is also set to 1 for all the messages on the queue. An update of the queue table, resetting the state and retry count to 0 kicks the whole thing back into life again.
Can anyone help me or explain what I am doing wrong?
Thanks
Jennifer

mark42324 wrote:
I want all messages to remain in queue until they are scanned for both spam and virus.Added in Messaging Server 6.3:
"Two new values now have meaning for the various SPAMFILTERx_OPTIONAL MTA options: 3 and 4. A value of 3 causes spamfilter failures to accept the message but queue it to the reprocess chanel for later processing. A value of 4 does the same thing but also logs the spam filter temporary failure to syslog."
So you would add spamfilterX_optional=3 to option.dat where X is the number matching the SpamAssassin filter slot (1,2,3... etc.).
Regards,
Shane.

Remove exception queue

I am new to AQ. We are using Oracle 11.2.0.3. We will be implementing Normal single subscriber queue. We will be using exisiting error logging table to hadle exception . So exception queue would be redundant for our workflow.
1) Is is possible to create Queue without exception queue?
2) Can we use queue by disabling its exception queue?
3) How can we remove/expire message from exception queue as soon as it enqueued?
Appreciate your input. Thanks.

Hello,
1) Is is possible to create Queue without exception queue?
When you create a queue table you always get a default exception queue and there should always be at least one exception queue in a queue table. When you create normal queue an exception queue is not created just the normal queue
2) Can we use queue by disabling its exception queue?
I am not clear on what you are asking with regard to this question. If you enqueue a message into a normal queue and it needs to be moved to the exception queue a queue monitor slave process will move the message from the normal queue to the exception queue. You can only enable an exception queue for dequeue. You cannot prevent a message from being placed on the exception queue if it is appropriate for the system to do this.
3) How can we remove/expire message from exception queue as soon as it enqueued?
You can setup AQ PL/SQL Notification to process any messages which are placed in the default exception queue or use DBMS_AQ.Listener to listen for enqueued messages into the exception queue.
Thanks
Peter

How to get Uniform distributed queue message counts with help of JMX

Hi,
Is there any way to get given queue message count, pending message counts using JMX. I can get all queue names and counts using JMX... after that i have to show only selected queue details.
Thanks,
-Som

Hi,
Following is the WLS snippet from an upcoming WLS JMS message management white paper that you can use to get the message statistics for a given destination.
With appropriate command line parameters, this script can be used to poll and dump the statistics of any destination on a specified interval.
Note that the WLST uses JMX API under the cover, so you can easily convert this into a pure JMX java program.
Hope this helps.
Kats
WebLogic JMS Message Statistics Script for weblogic.WLST
This script can be used for dumping message statistics of a given JMS Destination.
Based on the arguments, the script creates can print out message statistics
Usage: java weblogic.WLST msg_statistics.py [options]
Options:
username=...           username to connect to WebLogic Server       - defaults to "weblogic"
password=...           password to connect to WebLogic Server       - defaults to "weblogic"
url=...                Provider URL of the Administration Server    - defaults to "t3://localhost:7001"
wlsServerName=...      WebLogic Server Name                         - defaults to "examplesServer"
jmsServerName=...      JMS Server Name that hosts the destination   - defaults to "examplesJMSServer"
jmsModuleName=...      JMS Module Name that defines the destination - defaults to "examples-jms"
jmsDestinationName=... JMS Destination name to get the statistics   - defaults to "exampleQueue"
pollingIntervalInSeconds=... Time interval between statistics dump - defaults to "60 secs"
redirectStdout=...     File name to redirect the stdout of WLST     - defaults to no redirect and the results wil be printed out to stdout.
help                   Prints out this usage help
Note that all the defaults are set based WebLogic Examples domain that is part of WebLogic Server installation.
The "examples" server can be started from "C:/Oracle/Middleware/wlserver_10.3/samples/domains/wl_server" using startWebLogic.sh
To try this script OOTB, start the "examples" server and run the JMS sample as described below.
cd :/Oracle/Middleware/wlserver_10.3/samples/domains/wl_server/bin
. ./setDomainEnv.sh
cd $WL_HOME/samples/server/examples/src/examples/jms/queue
javac -d . *.java
export CLASSPATH=".;$CLASSPATH"
java examples.jms.queue.QueueSend t3://localhost:7001
Follow the prompts to populate the queue
Examples:
msg_statistics.py - Dump the message statistics of the exampleQueue for every 1 min
msg_statistics.py user=weblogic pass=weblogic url=t3://localhost:7001
                      wlsServerName=examplesServer jmsServerName=examplesJMSServer
                jmsModuleName=examples-jms jmsDestinationName=exampleQueue
                pollingIntervalInSeconds=30
For more details on JMS Message Management using WLST, see "WebLogic JMS Message Management In a Nutshell" whitepaper.
from weblogic.jms.extensions import JMSMessageInfo
from weblogic.messaging.kernel import Cursor
from javax.jms import TextMessage
from javax.jms import DeliveryMode
from java.io import ByteArrayOutputStream
from java.io import StringBufferInputStream
from java.util import Properties
from java.util import Date
from java.lang import *
import jarray
import sys
# shows_messages() definition
def dump_statistics(wlsServerName, jmsServerName, jmsModuleName, jmsDestinationName, pollingIntervalInSeconds):
pollingIntervalInMillis = long(pollingIntervalInSeconds) * 1000L
domainRuntime()
cd ('ServerRuntimes')
spath = wlsServerName + "/JMSRuntime/" + wlsServerName +".jms"
cd (spath)
fullDestName=jmsServerName+'/Destinations/'+jmsModuleName +'!'+jmsDestinationName
cdPathForDestName='JMSServers/'+ fullDestName
cd (cdPathForDestName)
while 1:
    print "========================================================================================================================"
    print "Messages     Messages      Messages      Messages      Bytes        Bytes        Bytes           Bytes    "
    print "Current      Pending      High          Received      Current      Pending      High           Received "
    print "Count         Count         Count         Count         Count        Count        Count           Count    "
    print "========================================================================================================================"
    s = "%8d     %8d     %8d     %8d     %8d     %8d     %8d     %d" % (cmo.getMessagesCurrentCount(), cmo.getMessagesPendingCount(), cmo.getMessagesHighCount(), cmo.getMessagesReceivedCount(), cmo.getBytesCurrentCount(), cmo.getBytesPendingCount(), cmo.getBytesHighCount(), cmo.getBytesReceivedCount())
    print s
    print ''
    Thread.sleep(long(pollingIntervalInMillis))
# Function to handle script arguments of the variety 'n=v', where
# arguments are placed into a dictionary of nv pairs and returned
# to the caller
def argsToDict(args):
d = {}
for arg in args:
    #print "arg: " + arg
    pair = arg.split('=', 1)
    #print "pair: " + str(pair)
    if len(pair) == 2:
      # binary argument, store as key pair
      key = pair[0]
      val = pair[1]
      d[key] = val
    else:
      # Unary argument, story with empty (non-null) key
      d[arg] = ''
print "Arguments: " + str(d)
return d
# Returns the value found in the provided map, at the location
# specified by 'key'; if no entry exists in the map for 'key',
# the provided default is returned.
def getValue(dict, key, default=None):
ret = default
if dict is not None:
    try:
      ret=dict[key]
    except KeyError:
      pass
return ret
# Connect to the target server specified in the provide args
def connectIfNecessary(argsDict=None):
# connect if necessary
if connected == "false":
    user=getValue(argsDict, "user", "weblogic")
    passwd=getValue(argsDict, "pass", "weblogic")
    url=getValue(argsDict, "url", "t3://localhost:7001")
    print "Connecting with [" + user + "," + passwd + "," + url + "]"
    connect(user,passwd,url)
# Retrieve a positional argument if it exists; if not,
# the provided default is returned.
# Params:
# pos   The integer location in sys.argv of the parameter
# default The default value to return if the parameter does not exist
# returns the value at sys.argv[pos], or the provided default if necesssary
def getPositionalArgument(pos, default):
value=None
try:
    value=sys.argv[pos]
except:
    value=default
return value
# Main
argsDict = argsToDict(sys.argv)
redirectOutputFileName = getValue(argsDict, "redirectStdout")
if redirectOutputFileName is None:
pass
else:
redirect(redirectOutputFileName, 'false')
print "The output from this program gets written into file " + redirectOutputFileName
sys.stdout = open(redirectOutputFileName, "w")
isHelp = getValue(argsDict, "help")
if isHelp is None:
pass
else:
print __doc__
exit()
connectIfNecessary(argsDict)
wlsServerName = getValue(argsDict, "wlsServerName", "examplesServer")
jmsServerName = getValue(argsDict, "jmsServerName", "examplesJMSServer")
jmsModuleName = getValue(argsDict, "jmsModuleName", "examples-jms")
jmsDestinationName = getValue(argsDict, "jmsDestinationName", "exampleQueue")
pollingIntervalInSeconds = getValue(argsDict, "pollingIntervalInSeconds", "60")
dump_statistics(wlsServerName, jmsServerName, jmsModuleName, jmsDestinationName, pollingIntervalInSeconds)
disconnect()
print 'End of script ...'
exit()

Is there any way to configure storage queue message encoding for Web Job's QueueTrigger?

We have a web job that listens to Azure storage queue via QueueTrigger. The queue messages are not encoded when they are added to the queue:
CloudStorageAccount account = CloudStorageAccount.Parse("...");
CloudQueueClient client = account.CreateCloudQueueClient();
CloudQueue queue = client.GetQueueReference("test1");
queue.EncodeMessage = false;
queue.AddMessage(new CloudQueueMessage("hello world"));
And in the web job, we use the below method to listen to the queue.
public static Task ProcessQueueMessageAsync([QueueTrigger("test1")]string message)
And the web job crashes when it gets a message, with the below output. Unfortunately we cannot control the encode setting of the coming messages. So, our question is, is there any way to configure queue message encoding for Web Job's QueueTrigger?
Thank you for any help and/or suggestion.
Found the following functions:
WebJobTest1.Functions.ProcessQueueMessageAsync
Job host started
Unhandled Exception: System.FormatException: Invalid length for a Base-64 char array or string.
at System.Convert.FromBase64_Decode(Char* startInputPtr, Int32 inputLength, Byte* startDestPtr, Int32 destLength)
at System.Convert.FromBase64CharPtr(Char* inputPtr, Int32 inputLength)
at System.Convert.FromBase64String(String s)
at Microsoft.WindowsAzure.Storage.Queue.CloudQueueMessage.get_AsString()
at Microsoft.Azure.WebJobs.Host.Storage.Queue.StorageQueueMessage.get_AsString()
at Microsoft.Azure.WebJobs.Host.Queues.StorageQueueMessageExtensions.TryGetAsString(IStorageQueueMessage message)
at Microsoft.Azure.WebJobs.Host.Queues.QueueCausalityManager.GetOwner(IStorageQueueMessage msg)
at Microsoft.Azure.WebJobs.Host.Queues.Listeners.QueueTriggerExecutor.<ExecuteAsync>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.WebJobs.Host.Queues.Listeners.QueueListener.<ProcessMessageAsync>d__11.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at Microsoft.Azure.WebJobs.Host.Timers.BackgroundExceptionDispatcher.<>c__DisplayClass1.<Throw>b__0()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
Press any key to continue . . .

Hi,
Thanks for posting here.
I am not too sure if the storage queue messages can be encoded before the webjob listens to it.
I am currently researching to gather more information with regards to your request.
I shall revert back to you with an update at the earliest.
Sincerely appreciate your patience.
Regards,
Shirisha Paderu

Exception queue messages

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