Can I do DB polling for new records in middle of BPEL process.

Hi,
I have a requirement like this:
1. Process A will trigger one concurrent request using wrapper PLSQL. PLSQL will return Request ID to Process A.
Next, Process A will invoke Process B in (one way communication mode)with input parameter as Request ID. Process A ends here.
2. Based on the Request ID, Process B should poll the table in the database to finding out success or failure of processed records.
We don't have a license to Oracle Apps Adapter, otherwise it could have solved the problem in very simple way using Business Events.
Question: Can we do DB polling in middle of the process?
Thanks,
Vidya

Hi,
Thanks for the response.
As per your suggestion, I can invoke a select query on table. But if by that time Concurrent request does update the table with processed records, then result set will be null. Again I have to invoke a select query on the table until I found the non empty result set.
Instead of this, Is it possible to do the sync read to table (like sync read in File adapter) or DB polling to a table in middle of the process?
Thanks,
Vidya

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Hi there,
please check out the DBAdapter trouble-shooting guide:
http://download-east.oracle.com/docs/cd/B31017_01/integrate.1013/b28994/app_trblshoot.htm#CIHFEHFA
I am copying an entry from there into here:
A.1.21 Some Queried Rows Appear Twice or Not at All in the Query Result
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When you execute a query, you may get the correct number of rows, but some rows appear multiple times and others do not appear at all.
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Open Application Sources > TopLink > TopLink Mappings. In the Structure window, double-click PHONES. On the first page, you should see Primary Keys. Make sure that the correct columns are selected to make a unique constraint.
Save and then edit the database partner link.
Click Next to the end, and then click Finish and Close.
Open your toplink_mappings.xml file. For the PHONES descriptor, you should see something like this:
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DBAdapter polling for new or changed records not issuing callback?

I have a process which includes a partner link with a database adapter.
The database adapter is to poll a table for new records using an external database server.
I have no relationships setup, it's a single-table query.
The adapter is configured to delete rows after they are read.
I have the receive process of that partner link tied to a receive activity and its own input variable assigned.
My process compiles and deploys successfully. When I initiate the process through the BPEL console, the instance of the process waits at the receive activity and nothing happens, even after I manually add records to the table being polled. (which do get deleted, apparently by the partner link.)
I have other dbadapter partner links in the same process using the same connection that work fine, specifically using procedure execution and custom sql queries.
I can't find any errors or warnings about this, and the interactions manager in the BPEL Console allows me to manually send a message to the instance, allowing it to continue.
The application server is 10.1.3.1.0 and I am using JDeveloper 10.1.3.2.0.4066
Message was edited by:
Paul.Dunbar
Follow-up:
When I set activation logging to debug, I get the following in domain.log
<2007-04-03 08:15:28,591> <DEBUG> <default.collaxa.cube.activation> <Database Adapter::Inbound> <oracle.tip.adapter.db.TopLinkLogger log> client acquired
<2007-04-03 08:15:28,591> <DEBUG> <default.collaxa.cube.activation> <Database Adapter::Inbound> <oracle.tip.adapter.db.TopLinkLogger log> SELECT SOME_ID, SOME_VALUE FROM PAULD.SOME_TABLE ORDER BY SOME_ID ASC
<2007-04-03 08:15:28,592> <DEBUG> <default.collaxa.cube.activation> <Database Adapter::Inbound> <oracle.tip.adapter.db.TopLinkLogger log> client released
From looking at this it may be that the callback to the receive activity is not occurring?
Message was edited by:
Paul.Dunbar
Second follow-up:
I'm still having this issue but must give up on troubleshooting.
Documentation on polling adapter says nothing about handling callbacks, I've been trying to use correlations here with no luck. I'm also not seeing any documentation about setting up correlations for use with the database adapter.
now the issue I'm having is that the inbound database adapter is still polling my table and deleting records, even though I've undeployed my process.

I did not. Currently the manual recovery area is empty. I've tried re-deploying my process and am now getting the following in my logs (all debugging on):
<2007-04-05 08:01:36,671> <DEBUG> <default.collaxa.cube.engine.deployment> <LockManager::acquire> Acquired read lock for SendEventNotice-1.0
<2007-04-05 08:01:36,671> <DEBUG> <default.collaxa.cube.engine.deployment> <LockManager::release> Released lock for SendEventNotice-1.0
<2007-04-05 08:01:36,672> <DEBUG> <default.collaxa.cube.engine.deployment> <LockManager::acquire> Acquired read lock for SendEventNotice-1.0
<2007-04-05 08:01:36,672> <DEBUG> <default.collaxa.cube.engine.deployment> <LockManager::release> Released lock for SendEventNotice-1.0
<2007-04-05 08:01:36,678> <DEBUG> <default.collaxa.cube.engine.data> <ConnectionFactory::getConnection> GOT CONNECTION 1 Autocommit = false
<2007-04-05 08:01:36,681> <DEBUG> <default.collaxa.cube.engine.data> <ConnectionFactory::closeConnection> CLOSE CONNECTION 0
<2007-04-05 08:01:36,681> <DEBUG> <default.collaxa.cube.engine.data> <ConnectionFactory::getConnection> GOT CONNECTION 1 Autocommit = false
<2007-04-05 08:01:36,682> <DEBUG> <default.collaxa.cube.engine.data> <ConnectionFactory::closeConnection> CLOSE CONNECTION 0
<2007-04-05 08:01:36,686> <DEBUG> <default.collaxa.cube.engine.deployment> <LockManager::acquire> Acquired read lock for SendEventNotice-1.0
<2007-04-05 08:01:36,687> <DEBUG> <default.collaxa.cube.engine.deployment> <LockManager::release> Released lock for SendEventNotice-1.0
<2007-04-05 08:01:36,688> <DEBUG> <default.collaxa.cube.engine.deployment> <LockManager::acquire> Acquired read lock for SendEventNotice-1.0
<2007-04-05 08:01:36,688> <DEBUG> <default.collaxa.cube.engine.deployment> <LockManager::release> Released lock for SendEventNotice-1.0
<2007-04-05 08:01:36,688> <DEBUG> <default.collaxa.cube.engine.deployment> <LockManager::acquire> Acquired write lock for SendEventNotice-1.0
<2007-04-05 08:01:36,688> <DEBUG> <default.collaxa.cube.engine.data> <BaseProcessPersistenceAdaptor::updateMetaData> Updating process metadata [ domain = default, process = SendEventNotice, revision = 1.0, state = 0, lifecycle = 0 ]
<2007-04-05 08:01:36,688> <DEBUG> <default.collaxa.cube.engine.data> <ConnectionFactory::getConnection> GOT TX CONNECTION 1 Autocommit = false
<2007-04-05 08:01:36,691> <DEBUG> <default.collaxa.cube.engine.dispatch> <BaseDispatchSet::receive> Receiving message log process event message 61b55bd8c71ae1e3:-3d66bcb1:111c1b2d4aa:-7f9c for set system
<2007-04-05 08:01:36,691> <DEBUG> <default.collaxa.cube.engine.dispatch> <Dispatcher::adjustThreadPool> Allocating 1 thread(s); pending threads: 1, active threads: 0, total: 84
<2007-04-05 08:01:36,693> <DEBUG> <default.collaxa.cube.engine.dispatch> <DispatcherBean::send> Sent message to queue
<2007-04-05 08:01:36,693> <DEBUG> <default.collaxa.cube.engine> <DomainObserverRegistry::notify> Notifying observer class oracle.bpel.services.rules.DeploymentListener with aspect class com.collaxa.cube.engine.observer.ProcessStateChangeAspect for domain default
<2007-04-05 08:01:36,693> <DEBUG> <default.collaxa.cube.engine> <DomainObserverRegistry::notify> Notifying observer class com.collaxa.cube.engine.test.driver.deployment.BPELTestDeployer with aspect class com.collaxa.cube.engine.observer.ProcessStateChangeAspect for domain default
<2007-04-05 08:01:36,693> <DEBUG> <default.collaxa.cube.engine> <DomainObserverRegistry::notify> Notifying observer class oracle.bpel.services.workflow.task.PurgeTask with aspect class com.collaxa.cube.engine.observer.ProcessStateChangeAspect for domain default
<2007-04-05 08:01:36,693> <DEBUG> <default.collaxa.cube.services> <oracle.bpel.services.workflow.task.PurgeTask::update(ICubeAspect> Called for aspect com.collaxa.cube.engine.observer.ProcessStateChangeAspect
<2007-04-05 08:01:36,693> <DEBUG> <default.collaxa.cube.engine> <DomainObserverRegistry::notify> Notifying observer class oracle.tip.esb.configuration.deployment.bpel.BPELSvcDeploymentManager with aspect class com.collaxa.cube.engine.observer.ProcessStateChangeAspect for domain default
<2007-04-05 08:01:36,693> <DEBUG> <default.collaxa.cube.engine.dispatch> <SystemDispatchSet::fetchScheduled> Fetched message log process event message 61b55bd8c71ae1e3:-3d66bcb1:111c1b2d4aa:-7f9c from system queue for processing
<2007-04-05 08:01:36,693> <DEBUG> <default.collaxa.cube.engine.dispatch> <LogProcessEventMessageHandler::handle> Processing log process event message 61b55bd8c71ae1e3:-3d66bcb1:111c1b2d4aa:-7f9c
<2007-04-05 08:01:36,693> <DEBUG> <default.collaxa.cube.engine> <DomainObserverRegistry::notify> Notifying observer class com.collaxa.cube.engine.data.CubeInstanceCache with aspect class com.collaxa.cube.engine.observer.ProcessStateChangeAspect for domain default
<2007-04-05 08:01:36,693> <DEBUG> <default.collaxa.cube.engine> <DomainObserverRegistry::notify> Notifying observer class oracle.bpel.services.workflow.DeploymentListener with aspect class com.collaxa.cube.engine.observer.ProcessStateChangeAspect for domain default
<2007-04-05 08:01:36,693> <DEBUG> <default.collaxa.cube.services> <oracle.bpel.services.workflow.DeploymentListener::update(ICubeAspect> Called for aspect com.collaxa.cube.engine.observer.ProcessStateChangeAspect
<2007-04-05 08:01:36,693> <DEBUG> <default.collaxa.cube.engine> <DomainObserverRegistry::notify> Notifying observer class com.collaxa.cube.engine.core.BaseCubeProcess$ActivationObserver with aspect class com.collaxa.cube.engine.observer.ProcessStateChangeAspect for domain default
<2007-04-05 08:01:36,693> <INFO> <default.collaxa.cube.activation> <AdapterFramework::Inbound> JCAActivationAgent::onStateChanged State is changed for process 'bpel://localhost/default/SendEventNotice~1.0/', state=ON
<2007-04-05 08:01:36,693> <INFO> <default.collaxa.cube.activation> <AdapterFramework::Inbound> Adapter Framework instance: OraBPEL - endpointActivation for portType=initialCoordination_ptt, operation=receive
<2007-04-05 08:01:36,693> <DEBUG> <default.collaxa.cube.activation> <AdapterFramework::Inbound> Looking up jca:address...
<2007-04-05 08:01:36,693> <DEBUG> <default.collaxa.cube.activation> <AdapterFramework::Inbound> Looking up WSDL Service jca:address for portType=initialCoordination_ptt and operation=receive
<2007-04-05 08:01:36,693> <DEBUG> <default.collaxa.cube.activation> <AdapterFramework::Inbound> Locating Resource Adapter for jca:address.. {http://xmlns.oracle.com/pcbpel/wsdl/jca/}address: location='eis/DB/TST2' ManagedConnectionFactory='oracle.tip.adapter.db.DBManagedConnectionFactory' (properties: {Password=E466676A7A458FA6EBCFF72E13C04843, PlatformClassName=oracle.toplink.platform.database.oracle.Oracle10Platform, ConnectionString=jdbc:oracle:thin:@//lxdb2:1521/TST2, DriverClassName=oracle.jdbc.OracleDriver, UserName=SONRIS_DBA})
<2007-04-05 08:01:36,693> <DEBUG> <default.collaxa.cube.activation> <AdapterFramework::Inbound> Setting up Input Header Message QName: null
<2007-04-05 08:01:36,693> <DEBUG> <default.collaxa.cube.activation> <AdapterFramework::Inbound> Setting up Input Header Part Name: null
<2007-04-05 08:01:36,694> <DEBUG> <default.collaxa.cube.engine.data> <ConnectionFactory::getConnection> GOT TX CONNECTION 2 Autocommit = false
<2007-04-05 08:01:36,694> <DEBUG> <default.collaxa.cube.activation> <AdapterFramework::Inbound> Setting Adapter Name: Database Adapter
<2007-04-05 08:01:36,694> <DEBUG> <default.collaxa.cube.activation> <AdapterFramework::Inbound> Determining Input and Output WSDL Message elements
<2007-04-05 08:01:36,695> <DEBUG> <default.collaxa.cube.activation> <AdapterFramework::Inbound> Creating ActivationSpec...
<2007-04-05 08:01:36,695> <DEBUG> <default.collaxa.cube.activation> <AdapterFramework::Inbound> Instantiating ActivationSpec oracle.tip.adapter.db.DBActivationSpec
<2007-04-05 08:01:36,695> <DEBUG> <default.collaxa.cube.activation> <AdapterFramework::Inbound> Populating ActivationSpec oracle.tip.adapter.db.DBActivationSpec with properties: {MaxRaiseSize=1, MarkReadFieldName=DONE_READING, UseBatchDestroy=false, MarkUnreadValue=UNREAD, ReturnSingleResultSet=false, QueryName=initialCoordination, MarkReadValue=READ, MarkReservedValue=RESERVED, DescriptorName=initialCoordination.AnotherTable, NumberOfThreads=1, MappingsMetaDataURL=initialCoordination_toplink_mappings.xml, PollingStrategyName=LogicalDeletePollingStrategy, PollingInterval=5, SequencingFieldName=AN_ID, MaxTransactionSize=unlimited}
<2007-04-05 08:01:36,697> <DEBUG> <default.collaxa.cube.engine.data> <ConnectionFactory::closeConnection> CLOSE TX CONNECTION 1
<2007-04-05 08:01:36,700> <DEBUG> <default.collaxa.cube.activation> <AdapterFramework::Inbound> Preparing ActivationSpec for Translation Service
<2007-04-05 08:01:36,701> <DEBUG> <default.collaxa.cube.engine.dispatch> <BaseDispatchSet::acknowledge> Acknowledged message log process event message 61b55bd8c71ae1e3:-3d66bcb1:111c1b2d4aa:-7f9c
<2007-04-05 08:01:36,705> <DEBUG> <default.collaxa.cube.activation> <AdapterFramework::Inbound> Preparing ActivationSpec for Connection Factory and Properties
<2007-04-05 08:01:36,705> <DEBUG> <default.collaxa.cube.activation> <AdapterFramework::Inbound> Invoking endpointActivation() on Resource Adapter
<2007-04-05 08:01:36,708> <INFO> <default.collaxa.cube.activation> <Database Adapter::Inbound> <oracle.tip.adapter.db.DBResourceAdapter endpointActivation> Activating: oracle.tip.adapter.db.DBActivationSpec@4e7ed
<2007-04-05 08:01:36,710> <DEBUG> <default.collaxa.cube.activation> <Database Adapter::Inbound> <oracle.tip.adapter.db.TopLinkLogger log> client acquired
<2007-04-05 08:01:36,713> <DEBUG> <default.collaxa.cube.activation> <Database Adapter::Inbound> <oracle.tip.adapter.db.TopLinkLogger log> client released
<2007-04-05 08:01:36,715> <DEBUG> <default.collaxa.cube.activation> <Database Adapter::Inbound> <oracle.tip.adapter.db.DBEndpoint start> About to schedule the inbound polling thread with the work manager. ActivationSpec: oracle.tip.adapter.db.DBActivationSpec@4e7ed
<2007-04-05 08:01:36,716> <INFO> <default.collaxa.cube.activation> <Database Adapter::Inbound> <oracle.tip.adapter.db.DBEndpoint start> Kicked off 1 threads.
<2007-04-05 08:01:36,717> <DEBUG> <default.collaxa.cube.activation> <Database Adapter::Inbound> <oracle.tip.adapter.db.TopLinkLogger log> client acquired
<2007-04-05 08:01:36,719> <DEBUG> <default.collaxa.cube.activation> <Database Adapter::Inbound> <oracle.tip.adapter.db.TopLinkLogger log> begin transaction
<2007-04-05 08:01:36,721> <DEBUG> <default.collaxa.cube.activation> <Database Adapter::Inbound> <oracle.tip.adapter.db.TopLinkLogger log> rollback transaction
<2007-04-05 08:01:36,722> <ERROR> <default.collaxa.cube.activation> <Database Adapter::Inbound> <oracle.tip.adapter.db.InboundWork handleException> Non retriable exception during polling of the database ORABPEL-11624
DBActivationSpec Polling Exception.
Query name: [initialCoordination], Descriptor name: [initialCoordination.AnotherTable]. Polling the database for events failed on this iteration.
If the cause is something like a database being down successful polling will resume once conditions change. Caused by Exception [TOPLINK-6024] (Oracle TopLink - 10g Release 3 (10.1.3.1.0) (Build 061004)): oracle.toplink.exceptions.QueryException
Exception Description: Modify queries require an object to modify.
Query: UpdateObjectQuery(null).
<2007-04-05 08:01:36,722> <FATAL> <default.collaxa.cube.activation> <AdapterFramework::Inbound> [initialCoordination_ptt::receive(AnotherTableCollection)]Resource Adapter requested Process shutdown!
<2007-04-05 08:01:36,723> <FATAL> <default.collaxa.cube.activation> <AdapterFramework::Inbound>
ORABPEL-11624
DBActivationSpec Polling Exception.
Query name: [initialCoordination], Descriptor name: [initialCoordination.AnotherTable]. Polling the database for events failed on this iteration.
If the cause is something like a database being down successful polling will resume once conditions change. Caused by Exception [TOPLINK-6024] (Oracle TopLink - 10g Release 3 (10.1.3.1.0) (Build 061004)): oracle.toplink.exceptions.QueryException
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As reflected in the log messages, the process is automatically turned off. Turning it back on is ineffective, the server turns it back off with the same exception.
This is a separate issue, but I'm not seeing much reason for this to be happening either. I've scrapped the process and started over, using my own BPEL process that simulates what I would expect that the dbadapter is supposed to do when it's configured to poll for records.

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Edited by: 939689 on Jun 11, 2012 4:04 AM

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If the key value doesnt match to any of the cell editor keys, application dumps saying invalid key. Instead of dumping, can there be a default editor, incase the key doesnt match?
7) ALV loosing the lead selection, when the view layout has sort order.
     - I understand that this is required up on certain context changes like rebinding complete data. However most of the times, we want to re-select the previous lead selection before ALV Refresh had reset it.
     As this happens inside Modify view of ALV, unless otherwise we use explicit Refresh, there is no other option.
     Is it possible for ALV to throw an event if the ALV services like Sort has lead to any context changes like Lost of Lead selection?
8) Search helps:
This requirement came from many users. Users would like to have custom search helps with in DDIC Search Help.
This can be any popup for performing search not just another DDIC search help. I am not sure but I think this is possible with Screen programming but not in WD.
Also more control is required to handle to F4 or Simulate F4, i.e. for example, to throw the same DDIC Search help if the user hits Enter.
The major functionality that users will miss, if they other search helps like OVS or Custom Search help, is the Personal Value List (PVL). Can we have some WD interface methods, that will help to enable/disable PVL with these custom search helps
9) Mandatory attributes check:
The current WD utilities mandatory attribute check method, does not return all the mandatory attributes for that View and context.
Also it works on lead selected data. Assuming there are hundreds of elements in context (for an ALV/Table), and the detail view has some mandatory attributes, this check has to be done every time for each and every lead selection.
Also, most of the times, the child node data changes based on parent node data. In these situations we will need all the mandatory attributes upfront and required checks has to be executed.
It will help a lot if the mandatory attributesto are passed back by the WD Utilities method once it calculates.
Thanks,
Anand
Edited by: Anand Nidamanuru on Dec 11, 2009 10:10 AM

How can I create an icon for "New Tab" (not "new window") on the toolbar?

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Is this possible?
BTW I tried to check options-->tabs-->open new windows in a new tab instead, but this does not help and when clicking the "new Window" icon on the toolbar, indeed a new window - and not a new tab - opens.
Thanks.

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Open the Customize window via "View > Toolbars > Customize" or via "Firefox > Options > Toolbar Layout"

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Dear community,
I have a flat data set which I run through a lookup and return. I want to check if at least one of the records matching a unique key constraint had a successful return without merging all the records. Can some one point me in the right direction?
Thanks!
Marc

Hi,
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Lookup Check does the same as Lookup and Return but does not return the record(s) looked up.
Also note that Lookup and Return does not actually merge records, but it does pull back the return data (which you can then split if you want a record for each).
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Mike

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When i plug in my iPhone, iPhoto opens automatically, and I'm able to sync photos.
Then -- while the phone is plugged in -- say I take some screenshots or save some images from email or safari. How do I get iPhoto to re-scan the iPhone for new images without having to unplug the iPhone and plug it back in?

You can't.
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TD

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