Database Polling in Jdev

Hi,
I have created BPEL process that continuously polling on View present on database at certain interval.
here i am using logical delete operation while polling for new or changed records so that will update certrain field on table.
but my view has only Read permission(Not want to change this) so i can't update the field that's why this polling functionality is not working after deploy on BPEL console.
so can anyone will help me on how i can fire only select query with specified interval of time to read the view data only? is there anyother way around to fire select query at certain interval without updating?
your help will be appreciated.
Thanks
Sagar

I'm not yet familiar with 11g - so forgive me if this is not valid in that release. But for 10.1.3 ...
Another option - if you can't (or just don't want to) affect data in the DB is to use some other mechanism to kick off your BPEL process on a regular time interval - and then just do a normal inbound select operation against your table to search for records to process.
I've been trying out a new scheme - where I use a file adapter as the polling mechanism to kick off the BPEL process (using a polling interval of maybe a minute). The file on the server that its polling for can be anything - as I don't actually use the contents of the file in the process. At the end of the BPEL process, I use another file adapter to place a new file in the polling directory - to be found by the polling file adapter on the next polling cycle. You could also accomplish this in other ways - but this seemed like a pretty simple way to kick off a BPEL process on a regular time interval.
Just an idea ...
I do wish BPEL had a simple way to schedule a process to invoke itself on a set interval. Perhaps in a future release? Or even in 11?
Rod

Similar Messages

Database Poller issues in Clustered env

Hi,
I am running Oracle BPEL 10.1.3.4 on top of Weblogic version 9.x in a clustered env. I created a simple database poller BPEL process (for target table in Oracle database) with below parameters:
Max Raise Size: 1
Max Transaction Size: 2
Polling Interval:30
Distributed Polling is enabled
All other BPEL engine and domain level parameters have default values.
In my clustered env two instances of database poller BPEL process are running on diff nodes. Now I populated my table with 1000 records in one go. According to parameters I expect:
- In each polling interval max 2 record will be processed by database poller BPEL process running on single node. And there will be 2 instances of this bpel process as max raise size is 1. Same I expect for database poller BPEL process running on another node. So overall 4 records should be processed in each polling interval and 4 instances of BPEL processes should be visible in BPEL console. But in actual its always 2.
Is I am missing something here? Won't the load balancer distributes records to BPEL processes on both nodes equally?
Also then I raise Max transaction size to higher value e.g. 20. But in this case after processing nearly 1/3 rd of records, the BPEL process stopped picking up any further records. Is there any known issue where Adapter stops picking any further database records if transaction size limit is higher?
thanks
Ankit
Edited by: AnkitAggarwal on 22-Feb-2010 03:36

Hi Ankit,
I have Oracle BPEL env11.1.1.2.0 clustered over 2 nodes.
I am facing a similar issue. In my scenario I have Bpel (with DB poller) and its deployed on the cluster. And I am connected to DB via Multi data source (MDS-1) with only one datasource (DS-1) configured in it.
So whenever I update the table which is being polled, in some cases I have TWO instances and in some cases I have ONE Instance running. My requirement is to have only one instance running every time the DB poller is initiatied.
Kindly help me out.
Thank You
Best Regards
Prasanth

Database polling performance issues

I am using Database polling to detect database changes for OLTP application.
my doubts are
1) will it affect performance of OLTP application
2) If so what would be the impact on OLTP application
3) How we can improve performance
4) any link to get more idea about this.

1) will it affect performance of OLTP application
No IT WONT AFFECT BECAUSE oltp Aapplication has
Transactions that involve small amounts of data
* Indexed access to data
* Many users
* Frequent queries and updates
* Fast response times
2) If so what would be the impact on OLTP application
N/A
3) How we can improve performance
Do not poll the table for 30 secs interval poll for atleast 45 secs intervals
4) any link to get more idea about this.
N/A

Database polling process

I have created a bpel database polling process to process a single table and use a logical update (mark a column as processed). The table will contain many unprocessed records at any time. I have setup the polling interval 5 Sec and records unlimited for each polling interval and in the process i am calling a stored procedure to insert same data into another database.
My doubts
But It fetches only one record and different instance is created for every Row. Is it normal process?
Why it takes only record after using unlimited option?
why i am asking this means i don't want to call stored procedure for each and every record.
I'm using MS SQL Server 2005.
any one pls let me know what is happening inside.

Depends on how you define performance. DBs are generally designed for this kind of load so you then need to look at the middleware. The concern I always have is how big can this message get. If it can potentially grow big, I would say over 10MB then you could run into trouble if you haven't tuned for that, 1 10MB file could hang your whole system if not tuned (extreme case to make a point). If you have it running row by row it may take more time but they will go though. Without knowing more about your environment I can't comment too much more, e.g. patterns, hardware, load etc.
Also polling isn't the most effective way long term to invoke a message. If the table is going to grow large I would look at partitioning as that select statement will deteriorate over time as you don't delete the records once read. ( I'm just trying to give you things to think about it may not be relevant your your site)
cheers
James

How to write code to insert record in database programtically in Jdev rel

Hi Experts,
Please tell me how to write code to insert record in database programtically in Jdev rel .2.
Thanks
Shiv Naresh

To insert the record programmatically i will provide you some sample below
ViewObject vo = this.getVoXXXX();
Row vor = vo.getCurrentRow(); // get the current row of the record
ViewObject vo1 = this.getvoYYYY();
Row vor1 = vo1.createNewRow(); //creating new row in the table
vor1.setAttribute("aaaaa",vor.getAttribute("ttttt")) // In this we are getting the current row value of "ttttt" and inserting into "aaaaa"Hope this could help you!

Triggers missing from offline database source in JDev 10.1.3.4/5

Hi,
I cannot copy triggers to offline database source in JDev 10.1.3.4/5.
In a project under Offline Database Source->[Schema Name] -Right Click- Import Database Objects -> Connection-> Filter Types (Triggers are not listed)
Is this a setup issue in JDev or the database or are triggers not supported in this version of JDev?
thanks,
Brenden

Hi,
the BPEL extension is developed and owned by the BPEL group. Please try the BPEL forum at BPEL Note that if they can't provide immediate help for your probem, you may consider customer support for help
Frank

Creating new database schema in jdev

can I create new database schema in jdev.If yes how?
I have checked many links but they are telling how to create connection to an existing database but not to create new databse?
Please help..

I have checked many links but they are telling how to create connection to an existing database but not to create new databse?
Database is required to be installed and a database instance created.
Oracle Database Software Downloads | Oracle Technology Network | Oracle </title><meta name="Title" co…

Can we put multiple Database Polling within the asynchronous process

Hi,
Can we put multiple Database polling within the the same asynchronous BPEL process.
There will be multiple Receive activities to receive the data from the poller.
Saptarishi

Hi Peter,
I am using 10.1.3.4 and cannot use ESB/mediator.
For the 2nd option,
I have tried to put multiple receive's to poll data from a table but it does not work(it waits at the 2nd Receive). Let me try to elaborate the issue a bit.
I have created a table for polling.
The table has 3 columns :- transaction_id, status, is_read
is_read is kept to implement the logical delete strategy of DB polling.
What I need to do is to maintain a single instance of BPEL to maintain a transaction(which is uniquely identified by transaction_id).
The BPEL should track the different stages of the transaction, i.e whenever a new row is inserted in the table with the updated status for a transaction, it must find the correct instance(by co-relating the transaction_id) and go to the next step (wait for the next receive activity) until all the steps of the transaction is completed.
In the code, I created a correlation set consisting of transaction_id(only). The property transaction_id has an alias to the inbound variable's payload.
In the first Receive, I checked the "create instance" checkbox. Also the correlation set is initialized.
From next Receive onwards the correlation set is checked.
The polling frequency is 5 secs.
The first Receive works fine and the process is instantiated. But it waits at the 2nd Receive indefinitely.
It will be very helpful if you can try this once. If you feel this is not the right approach, please guide me.
Thanks and Regards,
Saptarishi

Database Poller to start the control flow

I am relatively new to BPEL/SOA. I need your help in the design process
I have a design as following:
I have to essentially bring data from DB2 database into Siebel. On the Siebel side I have the Webservices created.
1. rowid, tablename, isTheRowProcessed, timestamp.is the structure of my polling table's structure.
The tablename column will tell me which application table has been updated/inserted with new data.
2. The Database Poller will poll the Polling table every minute and see there is a new row. The BPEL will read the tablename column and fetch the name of the table.
3. Depending on the name of the tablename, a specific Web Service will be invoked which will insert the data into the Siebel system.
for example, if the new row is:
10 TableA NotRead 8/19/2012 10:10:10
The poller should the read above and make it "10 TableA Read 8/19/2012 10:10:10"
Then WebServiceA should be invoked with some data.
Here is My question:
Should it be Async BPEL process or Synchronous process that should have the Poller?
Will Poller kick start sub BPEL processes?

I have a DB poller which has only one row (always just one row) and the Poller would update flag to N from Y.
The DBPoller is set to run every two seconds. I have a flag that is initially set by human to Y. The Poller will flip the value of the flag to N (from Y) and initiate a one-way BPEL process and if the BPEL process will set the Flag back to Y if successful. If the BPEL process fails then the BPEL process will leave the value of the flag to N and the BPEL process sends a mail to the users about the failure. The users after fixing the issue (may be some of the Web Services called by the BPEL are unavailable), will set the flag to Y and the process will continue.
The above intention is supposed to create create an instance id only after entire BPEL is executed. The poller is configured to execute every 2 seconds.
instance_id starttime BPEL Execution time
1 5:00:00 30 seconds
2 5:00:02 20 seconds
3 5:00;04 25 seconds
The above is the scenario is my current execution.
I thought that the second instance would start at 5:00:30 because the flag value would be N from 5:00:00 to 5:00:30 and the BPEL process would set the flag's value to Y at the end of execution of the BPEL process (instance 1). But, to my surprise 2nd instance is starting at 5:00:02 (just because the poller is configured to run every 2 seconds). Even if the poller is configured to run every 2 seconds the poller should not create BPEL process because the Poller at 5:00:02 should see the flag value of N (The poller should only create an instance if the flag's value is Y).
Please clarify this behavior.

Problem with database connection in Jdev 11

Hello,
my jdev version is 11 and i want do really simple task create new database connection to my oracle db.
I open database navigator and click new connection. i want jdbc connection but after i fill this form i pressed test connection button and get this error msg:
Test failed: 4
i think i have correct information but i tried this, i opened my older jdev 10 and copy jdbc url from my old db connection.
In jdev 11 i checked Enter Custom JDBS Url and pasted url from jdev 10 and i get:
Test failed: 4
What is wrong?
Thanks for your advice.
J.

I add new information:
i cant connect to oracle db 8, but i try another db in my company which is 10 and its working fine.
I write java class and try connect to db 8 via jdbc manually:
String url = "jdbc:oracle:thin:@SERVER:1525:SID";
String user = "user1";
String password = "aaa";
Class.forName("oracle.jdbc.driver.OracleDriver");
// DriverManager.registerDriver (new oracle.jdbc.driver.OracleDriver());
Connection conn = DriverManager.getConnection(url, user, password);
and i get this:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 4
     at oracle.jdbc.driver.T4C8TTIdty.marshal(T4C8TTIdty.java:468)
     at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:339)
     at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:621)
     at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:203)
     at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:34)
     at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:501)
     at java.sql.DriverManager.getConnection(DriverManager.java:525)
     at java.sql.DriverManager.getConnection(DriverManager.java:171)
     at project1.Class1.main(Class1.java:31)
i hope this will be more usefull and i know i write this info about db's version little bit late.
J.

How to use JNDI datasource instead of database connection settings JDev 10g

Hi,
In order to use the different database from other environments, we are not able to use the JNDI datasource configuration settings, all the time need to configure the database connection settings from JDeveloper by changing the database connectivity settings in the JDeveloper for each environment separately, need a solution on how to make the database connectivity unique using the JNDI datasource name for all the environments for database connectivity settings through the application server console rather than changing the database adapter configuration in JDeveloper.
Please provide the update at the earliest. Your help is greatly appreciated. Thanks in advance..

What are you not clear on?
What you need to do is get your developers to conform to a database naming standard, as stated above, so if you have an oracle database that is for eBusiness Suite you get all developers to create a DB connection in JDev called, ora_esb as an example.
When the developer creates a DB adapter this will create a JNDI name of eis/DB/ora_ebs. When the BPEL project is deployed it looks for the JNDI name in the oc4j-ra.xml file to see its connection details. If they don't exist then they use the developers connection details. The issue with this is that they generally always point to the development DB. It is best practice for the developers to remove the mcf settings in the DB adapter WSDL. This way if the JNDI name has not been configured it will fail.
So when you migrate from dev-test-prod what you have is the JNDI name eis/DB/ora_ebs. The dev points to the dev instance of ebs, test points to the test instance and so on. This means that you don't need to adjust any code in the BPEL projects.
cheers
James

Database Polling: Parent-Child Relation

Hi all,
We are experiencing problem while picking multiple records from child table while polling from the database.
Summary:
Parent table: Temp1 : Columns- Id,Name,Status
Child Table: Temp2 : Columns- Id,Item
Now lets say data present in table are
Temp1 Table :- 1,'abhi','N'
Temp2 Table :- 1,'pen'
1,'pencil'
I have used 1:M Relationship. I have kept a polling on parent table for column status. (Logical Delete)
Problem:
Now what is happening is that, from Child Table (Temp2) only first record got picked up 2 times..and record from Temp1 Table was being picked correctly.....
Can anybody help me how to resolve this issues....its bit urgent.
Thanks in advance.
Thanks,
Abhishek

Hi sunil,
Thanks for the reply. Relationship defined was correct.
I got the solution for this problem. Actually the primary key on child table was not set correctly. For such scenarios we need to have composite key on child table. when I make that, it started working.
Note that the composite key value has to be unique in the childs table.
Wow!!!
Thanks,
Abhishek...
Edited by: Abhishek saurabh on Jul 31, 2009 8:14 PM

Invalid File after Downloading from Database using JSP/JDev 10.1.2

Hi, i got a problem when i download a file from my blobColumn in database.
Well, actually i got no problem in reading the file out of database, but when i download this file, there are 3 more bytes then in the original one in Database...
Here's my java-code in the jsp-page i used as "save as" field:
Hashtable ht = Dokument.createDOK(request);
String dateiname = (String)ht.get("Dateiname");
byte[] fileBytes = (byte[])ht.get("Dokument");
ByteArrayOutputStream ba = new ByteArrayOutputStream();
ba.write(fileBytes);
// RESPONSE
response.setContentType("application/octet-stream");
response.setHeader("Content-Disposition","attachment; filename=\"" + dateiname + "\"");
// DOWNLOAD
OutputStream outs = response.getOutputStream();
ba.writeTo(outs);
outs.flush();
outs.close();
}catch(Exception ex){
ex.printStackTrace();
for testing i used a simple text file with 28bytes:
begin----
Test Zeile 1.
Test Zeile 2.
end-------
after downloading this file it looks like:
begin----
Test Zeile 1.
Test Zeile 2.
end-------
There are 3 bytes 0A(hex) at the beginning...
I dont know why.
after closing "outs" i made system.out for checking the amount of bytes in "fileBytes"-Array, and it was correct, just the 28 bytes like in the file from the Database.
But i actually dont get, why there are 3 more bytes at the beginning after downloading it.
The main problem is, some other files like word or excel documents cannt be opened, because of this 3 bytes at the beginning, and they seem to be invalid.
Would be glad if someone can help me, got really stuck and have no idea any more.
Thanks
Sebastian

Dont someone has a solution, or got a similar problem ?
Thought about it could be a bug in the basic java classes of JDev 10.1.2
but i dont really know...
Have no idea left.
Sebastian

Current DateTime in Database polling 'WHERE Clause'

Hi,
I am trying to explore the usage of polling option with Database adapter in SOA Suite 11g.
I am doing a sample process which will poll the data from a database table which has 2 fields, one is ID and the other one is UpdatedDate which is of type TIMESTAMP. I am trying to delete the records after polling, whose UpdatedDate is less than the current date. I am using the where clause in polling option to set the condition of UpdatedDate < CurrentDate.
The problem is I am not getting, how to get the current date in the right side of the expression. To provide the right side option, we have 3 options of Literal, Query and parameter. I have tried will all the options; when I am trying with Literal, the right side is updated with Null value.
Could any one help me to resolve this issue. I need the value of current dateTime as the right side expression of the where clause.
Thanks.

Hi,
You're maybe over complicating this... The DbAdapter should be able to delete processed records automatically for you since you use one of the defined polling strategies...
http://docs.oracle.com/cd/E28280_01/integration.1111/e10231/adptr_db.htm#CHDEFACG
Cheers,
Vlad

Database Polling Fails when target database re-started

Hi
I have a problem with a BPEL process that is polling records from the database. I noticed that no records had been picked up in a while and that no errors were being caught by the process. When i checked the domain log I could see that the error below had occurred and was retrying. I found out that the target SQLServer database had been restarted, but as far as I was aware the connection should refresh once the database restarts.
This is quite a concern for my client who is querying the stability of the SOA suite. they frequently restart their SQL Server database and do not want to have to refresh connections to solve the problem from the application server each time. They are currenlty using 10.1.3.3.0 of the SOA suite software so the connection should be reintiated when the target database is started again.
Does any one have any idea why this error is occuring??
<2008-03-18 18:34:16,987> <INFO> <default.collaxa.cube.activation> <Database Adapter::Inbound> <oracle.tip.adapter.db.exceptions.DBResourceException createEISException> A retriable exception occured. In BPEL you can configure a fault policy (starting with 10.1.3.3) to automatically perform retries. Please configure bpel/domains/<domainName>config/fault-bindings.xml
<2008-03-18 18:34:17,007> <WARN> <default.collaxa.cube.activation> <Database Adapter::Inbound>
ORABPEL-11624
DBActivationSpec Polling Exception.
Query name: [readProjectCodes], Descriptor name: [readProjectCodes.EFolder]. Polling the database for events failed on this iteration. [Caused by: Broken pipe]
If the cause is something like a database being down successful polling will resume once conditions change. Caused by Exception [TOPLINK-4002] (Oracle TopLink - 10g Release 3 (10.1.3.3.0) (Build 070608)): oracle.toplink.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: I/O Error: Broken pipeError Code: 0
Call:SELECT eFolderID, eMapName, eCategory, eStageName FROM dbo.eFolder WHERE ((((eStageName = ?) AND (eMapName = ?)) AND ((eCategory <> ?) OR (eCategory IS NULL))) AND ((eCategory <> ?) OR (eCategory IS NULL))) ORDER BY eFolderID ASC
     bind => [Oracle SOA Finance interface, ProjectCode, SOAProcess, SOARead]
Query:ReadAllQuery(bpel___localhost_default_ReadProjectCodesEworks_1_5__1205248248244.readProjectCodes.EFolder).
     at oracle.tip.adapter.db.exceptions.DBResourceException.createEISException(DBResourceException.java:461)
     at oracle.tip.adapter.db.exceptions.DBResourceException.inboundReadException(DBResourceException.java:376)
     at oracle.tip.adapter.db.InboundWork.handleException(InboundWork.java:633)
     at oracle.tip.adapter.db.InboundWork.runOnce(InboundWork.java:576)
     at oracle.tip.adapter.db.InboundWork.run(InboundWork.java:416)
     at oracle.tip.adapter.db.inbound.InboundWorkWrapper.run(InboundWorkWrapper.java:43)
     at oracle.tip.adapter.fw.jca.work.WorkerJob.go(WorkerJob.java:51)
     at oracle.tip.adapter.fw.common.ThreadPool.run(ThreadPool.java:272)
     at java.lang.Thread.run(Thread.java:595)
Caused by: Exception [TOPLINK-4002] (Oracle TopLink - 10g Release 3 (10.1.3.3.0) (Build 070608)): oracle.toplink.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: I/O Error: Broken pipeError Code: 0
Call:SELECT eFolderID, eMapName, eCategory, eStageName FROM dbo.eFolder WHERE ((((eStageName = ?) AND (eMapName = ?)) AND ((eCategory <> ?) OR (eCategory IS NULL))) AND ((eCategory <> ?) OR (eCategory IS NULL))) ORDER BY eFolderID ASC
     bind => [Oracle SOA Finance interface, ProjectCode, SOAProcess, SOARead]
Query:ReadAllQuery(bpel___localhost_default_ReadProjectCodesEworks_1_5__1205248248244.readProjectCodes.EFolder)
     at oracle.toplink.exceptions.DatabaseException.sqlException(DatabaseException.java:290)
     at oracle.toplink.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:581)
     at oracle.toplink.internal.databaseaccess.DatabaseAccessor.executeCall(DatabaseAccessor.java:441)
     at oracle.toplink.threetier.ServerSession.executeCall(ServerSession.java:457)
     at oracle.toplink.internal.sessions.IsolatedClientSession.executeCall(IsolatedClientSession.java:117)
     at oracle.toplink.internal.queryframework.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:117)
     at oracle.toplink.internal.queryframework.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:103)
     at oracle.toplink.internal.queryframework.DatasourceCallQueryMechanism.executeSelectCall(DatasourceCallQueryMechanism.java:174)
     at oracle.toplink.internal.queryframework.DatasourceCallQueryMechanism.selectAllRows(DatasourceCallQueryMechanism.java:481)
     at oracle.toplink.internal.queryframework.ExpressionQueryMechanism.selectAllRowsFromTable(ExpressionQueryMechanism.java:825)
     at oracle.toplink.internal.queryframework.ExpressionQueryMechanism.selectAllRows(ExpressionQueryMechanism.java:803)
     at oracle.toplink.queryframework.ReadAllQuery.executeObjectLevelReadQuery(ReadAllQuery.java:473)
     at oracle.toplink.queryframework.ObjectLevelReadQuery.executeDatabaseQuery(ObjectLevelReadQuery.java:811)
     at oracle.toplink.queryframework.DatabaseQuery.execute(DatabaseQuery.java:620)
     at oracle.toplink.queryframework.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:779)
     at oracle.toplink.queryframework.ReadAllQuery.execute(ReadAllQuery.java:451)
     at oracle.toplink.publicinterface.Session.internalExecuteQuery(Session.java:2089)
     at oracle.toplink.publicinterface.Session.executeQuery(Session.java:993)
     at oracle.tip.adapter.db.inbound.DestructivePollingStrategy.poll(DestructivePollingStrategy.java:347)
     at oracle.tip.adapter.db.InboundWork.runOnce(InboundWork.java:505)
     ... 5 more
Caused by: java.sql.SQLException: I/O Error: Broken pipe
     at net.sourceforge.jtds.jdbc.TdsCore.executeSQL(TdsCore.java:1052)
     at net.sourceforge.jtds.jdbc.JtdsStatement.executeSQLQuery(JtdsStatement.java:465)
     at net.sourceforge.jtds.jdbc.JtdsPreparedStatement.executeQuery(JtdsPreparedStatement.java:777)
     at net_sourceforge_jtds_jdbc_JtdsPreparedStatement_Proxy.executeQuery()
     at oracle.toplink.internal.databaseaccess.DatabaseAccessor.executeSelect(DatabaseAccessor.java:744)
     at oracle.toplink.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:516)
     ... 23 more
Caused by: java.net.SocketException: Broken pipe
     at java.net.SocketOutputStream.socketWrite0(Native Method)
     at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92)
     at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
     at java.io.DataOutputStream.write(DataOutputStream.java:90)
     at net.sourceforge.jtds.jdbc.SharedSocket.sendNetPacket(SharedSocket.java:671)
     at net.sourceforge.jtds.jdbc.RequestStream.putPacket(RequestStream.java:560)
     at net.sourceforge.jtds.jdbc.RequestStream.flush(RequestStream.java:508)
     at net.sourceforge.jtds.jdbc.TdsCore.executeSQL(TdsCore.java:1039)
     ... 28 more
<2008-03-18 18:34:47,265> <INFO> <default.collaxa.cube.activation> <Database Adapter::Inbound> <oracle.tip.adapter.db.exceptions.DBResourceException createEISException> A retriable exception occured. In BPEL you can configure a fault policy (starting with 10.1.3.3) to automatically perform retries. Please configure bpel/domains/<domainName>config/fault-bindings.xml
<2008-03-18 18:34:47,270> <WARN> <default.collaxa.cube.activation> <Database Adapter::Inbound>
ORABPEL-11624
DBActivationSpec Polling Exception.
Query name: [readProjectCodes], Descriptor name: [readProjectCodes.EFolder]. Polling the database for events failed on this iteration. [Caused by: Invalid state, the Connection object is closed.]
If the cause is something like a database being down successful polling will resume once conditions change. Caused by Exception [TOPLINK-4002] (Oracle TopLink - 10g Release 3 (10.1.3.3.0) (Build 070608)): oracle.toplink.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: Invalid state, the Connection object is closed.Error Code: 0
Call:SELECT eFolderID, eMapName, eCategory, eStageName FROM dbo.eFolder WHERE ((((eStageName = ?) AND (eMapName = ?)) AND ((eCategory <> ?) OR (eCategory IS NULL))) AND ((eCategory <> ?) OR (eCategory IS NULL))) ORDER BY eFolderID ASC
     bind => [Oracle SOA Finance interface, ProjectCode, SOAProcess, SOARead]
Query:ReadAllQuery(bpel___localhost_default_ReadProjectCodesEworks_1_5__1205248248244.readProjectCodes.EFolder).
     at oracle.tip.adapter.db.exceptions.DBResourceException.createEISException(DBResourceException.java:461)
     at oracle.tip.adapter.db.exceptions.DBResourceException.inboundReadException(DBResourceException.java:376)
     at oracle.tip.adapter.db.InboundWork.handleException(InboundWork.java:633)
     at oracle.tip.adapter.db.InboundWork.runOnce(InboundWork.java:576)
     at oracle.tip.adapter.db.InboundWork.run(InboundWork.java:416)
     at oracle.tip.adapter.db.inbound.InboundWorkWrapper.run(InboundWorkWrapper.java:43)
     at oracle.tip.adapter.fw.jca.work.WorkerJob.go(WorkerJob.java:51)
     at oracle.tip.adapter.fw.common.ThreadPool.run(ThreadPool.java:272)
     at java.lang.Thread.run(Thread.java:595)
Caused by: Exception [TOPLINK-4002] (Oracle TopLink - 10g Release 3 (10.1.3.3.0) (Build 070608)): oracle.toplink.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: Invalid state, the Connection object is closed.Error Code: 0
Call:SELECT eFolderID, eMapName, eCategory, eStageName FROM dbo.eFolder WHERE ((((eStageName = ?) AND (eMapName = ?)) AND ((eCategory <> ?) OR (eCategory IS NULL))) AND ((eCategory <> ?) OR (eCategory IS NULL))) ORDER BY eFolderID ASC
     bind => [Oracle SOA Finance interface, ProjectCode, SOAProcess, SOARead]
Query:ReadAllQuery(bpel___localhost_default_ReadProjectCodesEworks_1_5__1205248248244.readProjectCodes.EFolder)
     at oracle.toplink.exceptions.DatabaseException.sqlException(DatabaseException.java:290)
     at oracle.toplink.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:581)
     at oracle.toplink.internal.databaseaccess.DatabaseAccessor.executeCall(DatabaseAccessor.java:441)
     at oracle.toplink.threetier.ServerSession.executeCall(ServerSession.java:457)
     at oracle.toplink.internal.sessions.IsolatedClientSession.executeCall(IsolatedClientSession.java:117)
     at oracle.toplink.internal.queryframework.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:117)
     at oracle.toplink.internal.queryframework.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:103)
     at oracle.toplink.internal.queryframework.DatasourceCallQueryMechanism.executeSelectCall(DatasourceCallQueryMechanism.java:174)
     at oracle.toplink.internal.queryframework.DatasourceCallQueryMechanism.selectAllRows(DatasourceCallQueryMechanism.java:481)
     at oracle.toplink.internal.queryframework.ExpressionQueryMechanism.selectAllRowsFromTable(ExpressionQueryMechanism.java:825)
     at oracle.toplink.internal.queryframework.ExpressionQueryMechanism.selectAllRows(ExpressionQueryMechanism.java:803)
     at oracle.toplink.queryframework.ReadAllQuery.executeObjectLevelReadQuery(ReadAllQuery.java:473)
     at oracle.toplink.queryframework.ObjectLevelReadQuery.executeDatabaseQuery(ObjectLevelReadQuery.java:811)
     at oracle.toplink.queryframework.DatabaseQuery.execute(DatabaseQuery.java:620)
     at oracle.toplink.queryframework.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:779)
     at oracle.toplink.queryframework.ReadAllQuery.execute(ReadAllQuery.java:451)
     at oracle.toplink.publicinterface.Session.internalExecuteQuery(Session.java:2089)
     at oracle.toplink.publicinterface.Session.executeQuery(Session.java:993)
     at oracle.tip.adapter.db.inbound.DestructivePollingStrategy.poll(DestructivePollingStrategy.java:347)
     at oracle.tip.adapter.db.InboundWork.runOnce(InboundWork.java:505)
     ... 5 more
Caused by: java.sql.SQLException: Invalid state, the Connection object is closed.
     at net.sourceforge.jtds.jdbc.ConnectionJDBC2.checkOpen(ConnectionJDBC2.java:1634)
     at net.sourceforge.jtds.jdbc.ConnectionJDBC2.prepareStatement(ConnectionJDBC2.java:2328)
     at net_sourceforge_jtds_jdbc_ConnectionJDBC3_Proxy.prepareStatement()
     at oracle.toplink.internal.databaseaccess.DatabaseAccessor.prepareStatement(DatabaseAccessor.java:1216)
     at oracle.toplink.internal.databaseaccess.DatabaseAccessor.prepareStatement(DatabaseAccessor.java:1170)
     at oracle.toplink.internal.databaseaccess.DatabaseCall.prepareStatement(DatabaseCall.java:591)
     at oracle.toplink.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:491)
     ... 23 more
<2008-03-18 18:35:17,633> <INFO> <default.collaxa.cube.activation> <Database Adapter::Inbound> <oracle.tip.adapter.db.exceptions.DBResourceException createEISException> A retriable exception occured. In BPEL you can configure a fault policy (starting with 10.1.3.3) to automatically perform retries. Please configure bpel/domains/<domainName>config/fault-bindings.xml

I work with ditchTwentyThree. We are still getting this problem.
To clarify, the situation is that when we use the BPEL Database Adapter to Poll a SQL Server Database we get the behaviour that if the database is not available, the retry policy is referenced and the polling retries every 30 seconds. All good so far. However, when the Database becomes available again the polling still fails in the same way - until the SQL Server Database Connection is manually refreshed through EM. The behaviour we would expect is for the Polling to reinitiate as soon as the SQL Server becomes available without any manual intervention.
We have configured the DB Adapter retry policies in the same way as we have done for polling an Oracle database (all this works well with Oracle).
Can anyone help or confirm that this has been successfully achieved on other projects with the DB Adapter accessing MS SQL Server.
Any tips appreciated.
Thanks,
Mark.

Database Polling in Jdev

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