Distributed transactions, distributed objects

An observation and a conjecture about distributed transactions
and distributed object references:
Distributed non-service object references are persistent, and
a transaction can, in principle, propagate to the distributed
object through a method call from another partition.
However, in order to make the transaction propagate to the
object's partition the object must also have the
isTransactional attribute set to TRUE. The Forté runtime
system apparently uses the isTransactional property not only
for rollback of a distributed object's state, but also to
indicate whether it is desired that transactions propagate to
the object's partition. Thus, the behavior of a distributed
object reference with respect to distributed transactions can
be controlled by the value of the isTransactional attribute
in the same way that the behavior of an environment-visible
service object with respect to distributed transactions can
be controlled by the dialog duration.
Comments?
John Hodgson |Descartes Systems Group Inc.|Tel TBD
Systems Engineer|120 Randall Drive |Fax TBD
|Waterloo, Ontario |www.descartes.com
|CANADA N2V 1C6 |[email protected]
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Similar Messages

Can not commit distributed transaction

Hi
We get error "can not commit distributed transaction" during
commit the transaction in which we have create NEW entities.
Update-transactions on existing enitites work correct.
Our problem is probably due to seauences for object IDs: we are using oracle native sequences:
<sequence name="SeqErrRecObj" strategy="nontransactional" factory-class="native(Sequence=BUYING.SEQ_ERRRECOBJ)"/>
As soon we use strategy="nontransactional" in managed environment,
we get "can not commit distributed transaction" error by creating new instance.
Switching to strategy="transactional" seems to eleminate this problem.
I did not found any hint in about this in documentation.
Can some one confirm our assumption that using nontransactional oracle sequences in manageg (WebLogic 9.2) environment
is responsible for "can not commit distributed transaction" error and "strategy=transactional" is the right solution.
Probably we are completely wrong and tehre is some other explanation for this error ?
kind regards
Andre Teshler

Hi Andre,
It sounds like you have not configured a non-transactional datasource. See section "4.2.1. Managed and XA DataSources" in the <kodo>/docs/jdo/pdf/manual.pdf. Connection is for the managed datasource and Connection2 for the non-transactional.
David Ezzio

Problem: [Microsoft][ODBC SQL Server Driver][SQL Server]The Microsoft Distributed Transaction Coordinator (MS DTC) has cancelled the distributed transaction.

Hi Gurus,
I have this problem in my MS SQL Server 2012 that is running in SQL Server 2008 R2 Enterprise 64 bit.. Not sure why... Here is the full details of the error:
Microsoft OLE DB Provider for ODBC Drivers 80040E14
[Microsoft][ODBC SQL Server Driver][SQL Server]The Microsoft Distributed Transaction Coordinator (MS DTC) has cancelled the distributed transaction.
/Libraries/DBA/DBA.asa, line 717
Line 717 is this:
rs.open destTableName,,,,adCmdTable
Full details of the code:
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Thanks

Still does not work. I have allow MSDSTC in my firewall list.
Hi dudskie,
Have you try to use DTCTester or DTCPing to verify MSDTC functionality over the network? Please refer to the following article:
Troubleshooting Problems with MSDTC:
http://msdn.microsoft.com/en-us/library/aa561924.aspx
Use the DTCTester utility to verify transaction support between two computers if SQL Server is installed on one of the computers. The DTCTester utility uses ODBC to verify transaction support against a SQL Server database. For more information about
DTCTester see How to Use DTCTester Tool.
Use DTCPing to verify transaction support between two computers if SQL Server is not installed on either computer. The DTCPing tool must be run on both the client and server computer and is a good alternative to the DTCTester utility when SQL Server
is not installed on either computer. For more information about DTCPing, see
How to troubleshoot MS DTC firewall issues.
If you have any feedback on our support, please click
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ORA-02074: cannot ROLLBACK in a distributed transaction

I have a stored procedure that successfully creates a portal user when I run it with SQLPLUS.
However when I call the same procedure through ODP.Net, I get the following error.
"ORA-20001: ORA-02074: cannot ROLLBACK in a distributed transaction\nORA-06512: at \"PORTAL30.WWSEC_API\", line 1915\nORA-02074: cannot SET SAVEPOINT in a distributed transaction\nORA-06512: at \"PORTAL30.PRO_CREATE_WEB_USER\", line 28\nORA-06512: at line 1"
The portal version is 3.0.9.8.2 The stored proc is in the portal30 schema and I am connecting as portal30 user.
Any help is greatly appreciated...
Thanks.
The following is the code for the stored procedure:-
CREATE OR REPLACE PROCEDURE PORTAL30.PRO_CREATE_WEB_USER (
puser IN varchar2,
puser_last_name IN varchar2,
puser_first_name IN varchar2,
puser_group IN varchar2,
password IN varchar2
) AS
l_group_id number;
l_id number;
e_code number;
begin
l_id := wwsec_api.add_portal_user(p_User_Name => puser,p_Last_Name => puser_last_name,p_First_Name => puser_first_name,p_Portal_User => 'Y');
wwsec_api.activate_portal_user(puser);
portal30_sso.WWSSO_API_USER_ADMIN.CREATE_USER(P_USERNAME=> puser,P_PASSWORD=>password,p_error_code=> e_code);
wwsec_api.add_user_to_list(p_person_id => l_id,p_to_group_id => wwsec_api.group_id (p_name => puser_group),p_is_owner => wwsec_api.NOT_OWNER);
wwsec_api.set_defaultgroup(p_groupid => wwsec_api.group_id (p_name => puser_group),p_username => puser);
commit;
exception
when others then
raise_application_error(-20001,substr(sqlerrm,1,200));
end;
The foll is the code I am using to call the stored proc.
private void createUser()
string retval ;
OracleConnection oraconn = new OracleConnection(Data Source=testdb;User ID=portal30;Password=portal30" );
OracleCommand cmd = new OracleCommand("PRO_CREATE_WEB_USER", oraconn);
cmd.CommandType = CommandType.StoredProcedure;
OracleParameter a_uid = new OracleParameter("puser" ,OracleDbType.Varchar2,20);
a_uid.Direction = ParameterDirection.Input ;
a_uid.Value = (txtUserId.Text).Trim() ;
cmd.Parameters.Add(a_uid);
OracleParameter a_last_name = new OracleParameter("puser_last_name" ,OracleDbType.Varchar2,20);
a_last_name.Direction = ParameterDirection.Input ;
if (( txtLName.Text).Trim() != "" )
a_last_name.Value = (txtLName.Text).Trim() ;
else
a_last_name.Value = " ";
cmd.Parameters.Add(a_last_name);
OracleParameter a_first_name = new OracleParameter("puser_first_name" ,OracleDbType.Varchar2,20);
a_first_name.Direction = ParameterDirection.Input ;
if ((txtFName.Text).Trim() != "")
a_first_name.Value = (txtFName.Text).Trim() ;
else
a_first_name.Value = " ";
cmd.Parameters.Add(a_first_name);
OracleParameter a_type = new OracleParameter("puser_group" ,OracleDbType.Varchar2,20);
a_type.Direction = ParameterDirection.Input ;
a_type.Value = (lstUserType.SelectedValue).Trim() ;
cmd.Parameters.Add(a_type);
OracleParameter a_passwd = new OracleParameter("password" ,OracleDbType.Varchar2,20);
a_passwd.Direction = ParameterDirection.Input ;
a_passwd.Value = (txtPassword.Text).Trim() ;
cmd.Parameters.Add(a_passwd);
try
oraconn.Open();
cmd.ExecuteNonQuery();
lblMsg.ForeColor = System.Drawing.Color.FromName("blue");
lblMsg.Text = "User Created.";
catch(OracleException e)
{ retval = e.Message ;
lblMsg.ForeColor = System.Drawing.Color.FromName("red");
lblMsg.Text = "Error Creating user" ;
finally
oraconn.Close();

Also note that remote procedure/function calls (e.g. from ODP.NET), do not support distributed transactions (i.e. a SAVEPOINT/ROLLBACK block within the PL/SQL procedure/function) before database version Oracle 9i.
So if you are using say Oracle 817 you must use the "OracleTransaction" object in ODP.NET instead.
See:
http://www.dotnet247.com/247reference/msgs/39/197274.aspx

Database to Middleware distributed transaction control

Hello!
I'm using RMI in a JAVA stored procedure to invoke an external remote object's method (deployed in an application server). Is there any solution to manage the global transaction between database and middleware?
I've the same kind of invocations but from middleware to middleware and in that cases JTA (weblogic transaction manager) manage the transaction.
I've this big challenge in hands. Any idea?
Thanks a lot

Hi Kata,
this won't work as the ALL_TABLES is not a table that exists in your SQl Server - instead it is a "mimicked" table. This means the gateway will check if you have on your SQL Server a table called all_tables and when there's no table it will start an internal mechanism to check out what sort of tables exist in your SQL Server database. So the gateway is starting internally another transaction to get details from the foreign database and DG4ODBC can't participate in distributed transactions at all. Instead of using all_tables you have to use a real SQL Server table like SQ Server sys.objects or sys.tables.
- Klaus

How to implement Distributed Transaction

Hi,
We are using Jsp/Struts/Bc4j application model. JHeadstart 9.0.5.1.
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What is the recommended approach to do that? We can't define AM2 as submodule of AM1, because, when instantiated (in the corresponding doDML method on the entity in AM1), it will try to use the connection of AM1, which is wrong. When (which event), and how to instantiate AM2 (ensure write connection), get corresponding View Object, create the other record, and commit everything in one transaction? Btw, we can not use DB link.
Regards,
Vladimir

Hi Vladimir,
It seems to me that this is a generic BC4J issue, independent of JHeadstart. You could post it at the JDeveloper forum at http://otn.oracle.com/discussionforums/jdev.html.
My suggestion (though I'm not sure it would work) would be to explicitly instantiate AM2 at the time you need it within AM1, with code like this:
String amDef = "test.AM2";
String config = "AM2Local";
ApplicationModule am =
Configuration.createRootApplicationModule(amDef,config);
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// Work with your appmodule and view object here
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Hope this helps,
Sandra Muller
JHeadstart Team
Oracle Consulting

Distributed Transaction Coordinator not displaying remotely on a server core cluster node..

We setup a server core single node cluster (W2012 R2). The MS DTC is running, and the Distributed Transaction Coordinator firewall rules are enabled. I can connect to the firewall rules and compmgmt.msc remotely for this server. When
I attempt to connect to the Component Services Management console with this server, the MS DTC object is not displayed. Only the COM+ applications are displayed. We've setup other server core instances with out clustering and DTC is displayed.

Hi Steve,
We just finished the local test and found this behavior is by design. It’s expected that we can’t see the DTC remotely from component services for a cluster node.
In my lab, 2012R2 node3 is a single node cluster and has DTC role.

Unable to enlist in a distributed transaction (Windows7, Oracle 11G R1)

Hi,
I have a .Net application running on Windows 7 x64 using VisualStudio2008 and Oracle 11G R1 32bit client
In it I call a webservice calling another webservice, this requires to use oramts that interfaces with Microsoft DTC. However I'm getting the following error when calling the service method:
"Unable to enlist in a distributed transaction"
I have checked the following:
- Ora MTS is installed
- DTC is running, the security settings allow AX transactions (in fact I just allowed everything)
- Network services have the permission to access oracle dlls
- The registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSDTC\MTxOCI contains the following: "OracleXaLib"="xa80.dll" "OracleSqlLib"="SQLLib80.dll" "OracleOciLib"="oci.dll" (not sure if this is right)
What is it I'm doing wrong ? Does this version of Oracle work correctly on W7 ?
By the way it works fine on Windows XP !
I've spend quite some time trying to find a resolution..
Thanks!

I think I answered my own question
It seems that MSDTC is not supported by Oracle 11G R1 on Windows x64 !
All Oracle Database components are supported on Windows x64 with the following exceptions:
•Oracle Services for Microsoft Transaction Server are not supported on Windows Vista. As a result, all Oracle Windows data access drivers on Windows Vista that use Oracle Services for Microsoft Transaction Server to enlist in Microsoft Distributed Transaction Coordinator (MSDTC) coordinated transactions cannot participate in those coordinated transactions. These data access drivers include Oracle Data Provider for .NET, Oracle Provider for OLE DB, Oracle Objects for OLE, and ODBC. Check OracleMetaLink for up to date information on Oracle Services for Microsoft Transaction Server certification with Windows Vista.
http://download.oracle.com/docs/cd/B28359_01/install.111/b32006/reqs.htm#CHDCEFIJ
Edited by: 845528 on 18 mars 2011 05:05

Using Distributed Transaction with oracle 9i and VB

How to I get distributed transaction to work between a COM + object in VB and oracle using MSDAORA.1 driver? I keep getting the following error:
error number:
-2147168229
error description:
Cannot connect to the transaction manager or the transaction manager is unavailable.

Oracle 9i works great with VB.NET. I would recommend you to use Oracle Data Provider .NET (ODP.NET) as a database driver
http://otn.oracle.com/tech/windows/odpnet/content.html
for better performance and get full advantage of Oracle 9i features.
Regards
Jagriti
OTN Team @IDC

How to configure distributed transaction in Oracle Database Gateway for ODBC? (ORA-02047)

I am connecting from Oracle to another database server (MS SQL Server, DB2 the error message is the same) through an ODBC connection using Oracle SQL Developer. (This is how I set up)
I want to query the schema of a non-Oracle database using the data dictionary mapping of the Oracle Database Gateway for ODBC.
This works well:
select * from all_tables@katimssql;
But this doesn't:
create table alltables_mssql as
select * from all_tables@katimssql;
Output:
Error report:
SQL Error: ORA-00604: error occurred at recursive SQL level 1
ORA-02047: cannot join the distributed transaction in progress
ORA-06512: at "SYS.HS$_DDTF_SQLTABLES", line 58
ORA-06512: at line 1
Does anyone know the solution of this?
Thanks in advance,
Kata
Details:
Oracle Database 11g Express Edition Release 11.2.0.2.0
Microsoft SQL Server 2008 (SP2) - 10.0.4000.0 (X64)
ODBC Driver: SQL Server Native Client 11.0 (32 bit)
initkatimssql.ora:
HS_FDS_CONNECT_INFO=katimssql
HS_FDS_TRACE_LEVEL = ON
HS_TRANSACTION_MODEL = READ_ONLY_AUTOCOMMIT
I tried these, none of them worked, the error message is the same.
HS_FDS_TRACE_LEVEL = off
HS_TRANSACTION_MODEL = SINGLE_SITE
HS_TRANSACTION_MODEL = READ_ONLY_AUTOCOMMIT
HS_TRANSACTION_MODEL = READ_ONLY

Hi Kata,
this won't work as the ALL_TABLES is not a table that exists in your SQl Server - instead it is a "mimicked" table. This means the gateway will check if you have on your SQL Server a table called all_tables and when there's no table it will start an internal mechanism to check out what sort of tables exist in your SQL Server database. So the gateway is starting internally another transaction to get details from the foreign database and DG4ODBC can't participate in distributed transactions at all. Instead of using all_tables you have to use a real SQL Server table like SQ Server sys.objects or sys.tables.
- Klaus

Distributed transactions with container-managed MDBs

          I have built a framework that employs a high rate of code reuse while abstracting
          the complexities of inter-application communication. This allows application
          developers to focus on solving their business needs and not worry about "the plumbing"
          between the applications.
          At this point, the framework is using container-managed MDBs for Topic destinations.
          MDBs were chosen because of their concurrent nature for processing JMS messages.
          Now that I have this framework up and running, I am trying to add distributed
          transaction support and am having trouble understanding what I need to do. Here
          is how the framework works:
          The MDB will recieve a message, unmarshall it into a business object, and then
          route that object to the appropriate business class where it is then processed
          accordingly. In most cases, the processing of this message object will require
          database interaction. If any error should occur while processing the message,
          all XAResources within the transaction should rollback and ultimately, the JMS
          message will be redelivered later.
          Here is what I'm trying to find out:
          1. When control is passed to an application and it gets a DB connection, will
          that DB resource be dynamically enlisted with the transaction?
          2. Must the DB connection come from the WLS DB pool to be enlisted with the transaction?
          I ask this because the current standard at this company is to use a home-grown
          DB connection pool for getting DB connections. This is due to the fact that not
          all applications here run in a WLS environment and they wanted a standard way
          of retrieving a DB connection across applications. They also sited problems with
          WLS 4.5.1 connection pool.
          3. The documentation states that only one database may be involved in a transaction.
          If a connection to another database is required, but not needed in the current
          transaction, will WLS ignore enlisting the 2nd DB resource, or throw an exception?
          4. Where can I find <B>detailed</B> information about this subject? Everything
          that I have read so far has barely scratched the surface for this specific topic.
          Thanks,
          Bob.


          Hi Bob,
          If you are using WLS's XA connection pool, then the XAResource associated with
          the XA connections are enlisted with the transaction transparently for you. Enlistments
          actually occur not at getConnection, but on demand when the JDBC objects are actually
          used.
          If you are not using WLS connection pools, then you would need to enlist the XAResource
          associated with the XA connections yourself. You can obtain the transaction associated
          with the current thread by calling weblogic.transaction.TxHelper.getTransaction(),
          and then call enlistResource on the transaction.
          Weblogic has provisions that allow one (and only one) non-XA connection pool to
          participate in a distributed transaction. In this case, you will get a SQLException
          when you try to obtain a connection from a second connection pool in the same
          distributed transaction. However, if you are using real XA connection pools,
          there is no limitation and any number of XA connection pools can participate in
          the same distributed transaction.
          We will try to incorporate more info in our online docs in the future.
          -- Priscilla Fung, BEA Systems, Inc.
          "Bob Peroutka" <[email protected]> wrote:
          >
          >I have built a framework that employs a high rate of code reuse while
          >abstracting
          >the complexities of inter-application communication. This allows application
          >developers to focus on solving their business needs and not worry about
          >"the plumbing"
          >between the applications.
          >
          >At this point, the framework is using container-managed MDBs for Topic
          >destinations.
          > MDBs were chosen because of their concurrent nature for processing JMS
          >messages.
          >
          >Now that I have this framework up and running, I am trying to add distributed
          >transaction support and am having trouble understanding what I need to
          >do. Here
          >is how the framework works:
          >
          >The MDB will recieve a message, unmarshall it into a business object,
          >and then
          >route that object to the appropriate business class where it is then
          >processed
          >accordingly. In most cases, the processing of this message object will
          >require
          >database interaction. If any error should occur while processing the
          >message,
          >all XAResources within the transaction should rollback and ultimately,
          >the JMS
          >message will be redelivered later.
          >
          >Here is what I'm trying to find out:
          >
          >1. When control is passed to an application and it gets a DB connection,
          >will
          >that DB resource be dynamically enlisted with the transaction?
          >
          >2. Must the DB connection come from the WLS DB pool to be enlisted with
          >the transaction?
          >
          >I ask this because the current standard at this company is to use a home-grown
          >DB connection pool for getting DB connections. This is due to the fact
          >that not
          >all applications here run in a WLS environment and they wanted a standard
          >way
          >of retrieving a DB connection across applications. They also sited problems
          >with
          >WLS 4.5.1 connection pool.
          >
          >3. The documentation states that only one database may be involved in
          >a transaction.
          > If a connection to another database is required, but not needed in the
          >current
          >transaction, will WLS ignore enlisting the 2nd DB resource, or throw
          >an exception?
          >
          >4. Where can I find <B>detailed</B> information about this subject?
          > Everything
          >that I have read so far has barely scratched the surface for this specific
          >topic.
          >
          >Thanks,
          >
          >Bob.

DatabaseError: ORA-02049: timeout: distributed transaction waiting for lock

Hi all
There is script running in my database 'A' that will select some data from tables in other database through DBLINK and update some tables too. The script which 6 I am running for the past 6 monts succesfully. Yesterday I got error saying that,
DatabaseError: ORA-02049: timeout: distributed transaction waiting for lock
ORA-02063: preceding line from test
I have tested the Link and its active no issues in DBLINk
I understand the objects which I am accessing the table in locked mode,
SQL> select OBJECT_ID,SESSION_ID,PROCESS,LOCKED_MODE from v$locked_object where
SESSION_ID=121;
OBJECT_ID SESSION_ID PROCESS LOCKED_MODE
77391 121 21394 3
i
I killed the session 121 and in v$session status is Killed, but I am getting the same error repeating while running the script. And the session_id is still in locked_mode.
Could please add some light on this?
-Thanks
Antony

Hi,
I have killed the session which caused blocking and the status is KILLED for the past two days. But still the object is in locked mode
SQL> select OBJECT_ID,SESSION_ID,PROCESS,LOCKED_MODE from v$locked_object where
SESSION_ID=121;
OBJECT_ID SESSION_ID PROCESS LOCKED_MODE
77391 121 21394 3
How would I resolve this any idea
-Thanks & Cheers
Antony

Is there any sample RMI-IIOP application using distributed transactions

Hi,
Based on the links below:
http://e-docs.bea.com/wls/docs61/jta/trxrmi.html#1018506
http://e-docs.bea.com/wls/docs61/jta/gstrx.html#1067532
It appears that is possible to have distributed transactions across RMI-IIOP
clients and RMI-IIOP applications (servers).
I am surprised by the note:
Note: These code fragments do not derive from any of the sample applications
that ship with WebLogic Server. They merely illustrate the use of the
UserTransaction object within an RMI application.
The above note suggests that there is no sample code available.
Is there any sample code that illustrates RMI-IIOP applications (servers)
participating in distributed transactions?
Regards,
Dan Cimpoesu

Transaction examples for IIOP are in the works for the next release.
"Dan Cimpoesu" <[email protected]> wrote:
Hi,
Based on the links below:
http://e-docs.bea.com/wls/docs61/jta/trxrmi.html#1018506
http://e-docs.bea.com/wls/docs61/jta/gstrx.html#1067532
It appears that is possible to have distributed transactions across RMI-IIOP
clients and RMI-IIOP applications (servers).
I am surprised by the note:
Note: These code fragments do not derive from any of the sample applications
that ship with WebLogic Server. They merely illustrate the use of the
UserTransaction object within an RMI application.
The above note suggests that there is no sample code available.
Is there any sample code that illustrates RMI-IIOP applications (servers)
participating in distributed transactions?
Regards,
Dan Cimpoesu

Distributed transactions and connection pooling

Hi,
We have a problem with the enlistment of connections in distributed transactions.
The following very simple C# program does not work correctly (a simple form with one button and a class hosted in COM+). If you put a breakpoint on "cnOraTx.Close();" you will see that the inserted record is already visible in the database although the transaction has not commited yet.
If you comment out the lines between //START and //END everything works as expected.
Also, if we use "Pooling=false" in the connection string, everything works fine again, but since we are writing a web application, we really need the connection pooling.
We are using ODP.NET 9.2.0.2.102 (I also tried with the ODP.NET 9.2.0.4.0 BETA) and an oracle 8.1.7 database.
Best Regards,
Piet
private void button1_Click(object sender, System.EventArgs e)
//When commenting the following lines the connection is enlisted in the distributed transaction
//START
OracleConnection cnOraTx;
cnOraTx = new Oracle.DataAccess.Client.OracleConnection("Data Source=ECOMP532;User ID=USER;Password=PWD");
cnOraTx.Open();
cnOraTx.Close();
cnOraTx.Dispose();
//END
OpenOraTransConn obj = new OpenOraTransConn();
obj.Connect();
//This class is going to be hosted within COM+
[Transaction(TransactionOption.Required)]
public class OpenOraTransConn: ServicedComponent
private OracleConnection cnOraTx;
private OracleCommand cmd;
internal void Connect()
cnOraTx = new OracleConnection("Data Source=ECOMP532;User ID=USER;Password=PWD");
cnOraTx.Open();
cmd = new OracleCommand();
cmd.Connection = cnOraTx;
cmd.CommandText = "INSERT INTO SYSADM.PERSON (PE_KEY) VALUES(130000)";
cmd.ExecuteNonQuery();
cnOraTx.Close();
cnOraTx.Dispose();
ContextUtil.SetComplete();

Hello:
We are experiencing the exact same problem. INSERT, UPDATE or DELETE statements that should roll back because an exception is being thrown from inside our ServicedComponent-derived class (which is set to TransactionOption.Required and uses AutoComplete) are not -- and instead are being committed to the database.
Were you able to figure out why this is happening, and what can be done to get around it? We too were able to avoid the problem by setting Pooling=False to our connect string, but for a variety of reasons we want to use connection pooling ...!

Distributed transactions across RMI-IIOP client to RMI-IIOP server do not work

Hi,
          Based on the links below:
          http://e-docs.bea.com/wls/docs61/jta/trxrmi.html#1018506
          http://e-docs.bea.com/wls/docs61/jta/gstrx.html#1067532
          It appears that is possible to have distributed transactions across RMI-IIOP
          clients and RMI-IIOP applications (servers).
          I followed up the "Transactions Sample RMI Code" section but it appears that
          the transaction context is not propagated from client to server. I am also
          surprised by the note:
          Note: These code fragments do not derive from any of the sample applications
          that ship with WebLogic Server. They merely illustrate the use of the
          UserTransaction object within an RMI application.
          The above note suggests that there is no sample code available.
          Is there anyone who successfully had RMI-IIOP applications (servers)
          participating in distributed transactions?
          Is there any sample code that illustrates RMI-IIOP applications (servers)
          participating in distributed transactions?
          If anyone thinks that this should work I will post my code that does not
          work.
          Regards,
          Dan Cimpoesu


But if you look to the diagram:
http://e-docs.bea.com/wls/docs61/jta/gstrx.html#1040200
it suggests that transactional context is passed from clients to RMI-IIOP
servers.
Am I wrong?
Dan
"Andy Piper" <[email protected]> wrote in message
news:[email protected]..
"Dan Cimpoesu" <[email protected]> writes:
Transactions over IIOP are not supported or implemented in WLS 6.1 or
previous. This is a feature of WLS 7.0. In 7.0 we implement OTS.
andy
Hi,
Based on the links below:
http://e-docs.bea.com/wls/docs61/jta/trxrmi.html#1018506
http://e-docs.bea.com/wls/docs61/jta/gstrx.html#1067532
It appears that is possible to have distributed transactions across
RMI-IIOP
clients and RMI-IIOP applications (servers).
I followed up the "Transactions Sample RMI Code" section but it appearsthat
the transaction context is not propagated from client to server. I amalso
surprised by the note:
Note: These code fragments do not derive from any of the sampleapplications
that ship with WebLogic Server. They merely illustrate the use of the
UserTransaction object within an RMI application.
The above note suggests that there is no sample code available.
Is there anyone who successfully had RMI-IIOP applications (servers)
participating in distributed transactions?
Is there any sample code that illustrates RMI-IIOP applications(servers)
participating in distributed transactions?
If anyone thinks that this should work I will post my code that does not
work.
Regards,
Dan Cimpoesu

Distributed transactions, distributed objects

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