Transaction Handling via Multiple Stored Procedure Calls

Hello,
we have the requirement that we call severall stored procedures in a sequence. The problem now is to have one explicit transaction which is only commited in case all calls have been succesful. In case there is an error during one of the calls all already executed stored procedures should be rolled back.
One idea would be to define transactional behavior in BPM within a block but I have some doubts whether this works as I have found the following warning in the SAP XI help section:
"The transaction control mechanism for integration processes is not a central transaction manager for an entire system landscape. The transaction control mechanism cannot roll back any processing steps outside the Integration Server"
Do you have any advice on this issue?
Thanks a lot!

The best solution would be to call the root SP from XI adaptor and handle the transaction commit logic in side this root SP. That way even BPM will not be in picture.
BPM can not handle transaction roll back on external systems.
VJ

Similar Messages

Inserting to a clob field using cx_Oracle via a stored procedure

Hello,
Does anyone have experience using cx_Oracle to call a stored procedure which inserts to a clob field? I have found examples of doing this via straight SQL but I was hoping it was possible to do this via a stored procedure call. Thanks for any help you can provide.
Jason

And cursor.callproc('insert_clob_proc', (clob,))
doesn't work for you?
PrzemekYes - I should have been more clear in my original post. The callproc function works until we have a value which is over 32K. At values over 32K, we get an error message "ORA-01460: unimplemented or unreasonable conversion requested". I believe this is because we are sending the value as a string and so we would need to figure out how to send as a CLOB in cx_Oracle? Here is some code to use to test if interested...
Oracle (Oracle Database 10g Release 10.1.0.4.0 - Production):
CREATE TABLE clob_test (CLOB_FIELD CLOB);
CREATE OR REPLACE PROCEDURE ins_clob_test (v_clob_field IN CLOB)
AS
BEGIN
INSERT INTO clob_test (clob_field) VALUES (v_clob_field);
END ins_clob_test;
Python (2.5):
conn = cx_Oracle.connect(xhash['oraclelogin'])
cursor = conn.cursor()
clob_var = 'Some test data' * 10000
cursor.callproc('ins_clob_test',(clob_var,))
conn.commit()
cursor.close()
conn.close()
I should also mention that I am the Oracle developer and not the Python programmer - my knowledge of Python is very limited. I would like the Python programmers to use the procedures (packages) I have created to do their inserts but this situation has caused them to put the SQL directly in their code.
Thanks again for any assistance you can provide.
Jason

Multiple stored procedures using JDBC Adopter, Synchronous call

Hello Guys,
This is kind of different scenario,
Here is the scenario (SQL Server -> XI -> Legacy)
1.I want to trigger stored procedure (from XI to)
2.Inside the stored procedure we are going to have multiple stored procedures.
-Inside stored procedures
SP1 -> It supposed to select the data from interface control table, if that is success
SP2 -> Call some other stored procedures which can be select/insert/delete from different tables most of the cases it would be select, if that is success
It should give results back (Response) to XI and with some output parameters like (status message, etc)
Next step I want send those results to target system which is legacy. If that is success
Next step I should update entry in the Interface control table(which is in SQL Server) with success entry like (success message, current date, current time, interface name, username.)
If it fails any stage like while selecting data from interface control table which is SP1/ SP2 It should give error message back to XI(output parameters). XI is going to send Alerts/Mails to respective interface owners.
This is my scenario can anybody help me on this what needs to be done to implement this scenario.

Hi Murali,
Anyway , altimately you are going to call one stored procedure and going to get one output. So it will not be a problem I think.
Anyway it is required to introduce BPM here.
<i>Next step I want send those results to target system which is legacy. If that is success</i>
>>>You can make sure that message is recieved by legacy system. Because legacy systems like File systems will not support Application Acknowledgement. So here you can go with Transport Acknowledgement.
From where will get Success messages like (current date etc) are you planning to take XI system date.. If so you can get this. And you can send the message to SQL.
<i>If it fails any stage like while selecting data from interface control table which is SP1/ SP2 It should give error message back to XI(output parameters). XI is going to send Alerts/Mails to respective interface owners.</i>
>>>For application errors like SP2 error etc, you need to get the Error Response from stored procedure itsel.
Second option is you can go with Adapter Alerting, whenever any error in the Sender JDBC adapter.
Anyway design/requirement should be perfect, before start the process here...
Regards,
Moorthy

DML visibility in stored procedures called via JDBC

Hello,
I have two stored procedures, A and B. Proc A inserts Q into table X. Proc B selects Q from table X to insert it into table Y. Neither procedure does a COMMIT.
My Java class executes Proc A and then Proc B within a transaction (autocommit is false). But Proc B fails to select Q from table X with the No Data Found error, apparently unable to see the recently inserted Q.
If these two procedures are called from a SQL*Plus block, everything succeeds.
Does anyone have a clue about what I am missing? All my DML should be visible to my session.
Thank you in advance for any suggestions.
- CJ

Thank you, Joe, for your reply!
To the best of my knowledge, all of my stored procedure calls are being made from the same connection so I can rollback everything if necessary. I have not explicitly closed the connection between calls. The debugger indicates my connection session id never changes across calls.
Do you know of any JDBC trace tools that might help me verify my connections? I've enabled logging with oracle.jdbc.driver.OracleLog.setTrace(true) but it doesn't really give me specific connection information - at least not that I can tell. :)
Thanks!
Cori

How to call multiple stored procedure from same DB Adapter

Hi,
I want to invoke 3 stored procedures from my message flow in BUS . I created a DB adapter and invoked 1 successfully . Now I don't to configure 2 other DB adapters for calling other 2 stored procedures . I want some how to be able to call the other 2 from the first DB adapter only . Somehow I need the flexibility to have procedure names as the operation names in 1 wsdl and be able to configure this in JDeveloper for this at time of DB adapter configuration . I am using 11G . Is it possible ?

You can probably create a DB adapter with operation type selected as Execute Pure SQL and write SQL code to invoke the stored procedures depending on the procedure name (which you can get as one of the parameters of DB Adapter).
However, Even if you were able to do it, the DB Adapter schemas are generated based on stored procedure parameter list and types. If you use Execute Pure SQL type of DB Adapter the schema will be generated based on the parameters which you are using in your custom SQL code within DB Adapter. Which means that if you want to add a new stored procedure as target which has a different name and different parameters then you will need to regenerate the DB adapter and update your custom SQL code. This also means that you will need to do regression testing interfaces to all stored procedures whenever there is any change in this DBAdapter.
Now, my question is why do you want to invoke multiple stored procedures from same DB adapter?
This is not a good way to design integration solutions and makes your services resistance to change as it will take more time to change and test.
If all that you want is to have a web service which can have different operations for different stored procedures then you should create three business services and create a wrapper proxy service which has one operation for each stored procedure, within the proxy transform and call the correct backend service (you can use operational branch). This way you have a modular code where each module (read interface to one stored procedure) can be independently modified and tested.

Stored Procedure call from JDBC sender for Oracle Database

Hi,
I have a requirement to call stored procedure using JDBC sender adapter for retriving data from an Oracle database.
I need to execute first stored procedure call from Querry SQL statement and then trigger second stored procedure call for confirming the succesful retrival of those records from the update SQL statement.
Querries:
1. Can we trigger stored procedure from Update statement of JDBC sender.
2. Can we call stored procedure from Querry statement, since I have read on other sdn threads that stored procedure calls on Oracle database are not allowed. If not possible to have "Execute stored procedure" would the function call (select * from table(function name)) work same as stored procedure.
3. In a JDBC sender the Querry statement and Update statement are executed in same session call and same database connection. What happens if the querry statement was not succesful, would the update be still triggered.
Please note PI does not have direct access to main table and hence the need to have separate stored procedure calls.
The PI version is PI 7.11 sp4.
Appreciate your inputs.
Thanks.
Siddhesh S.Tawate

>1. Can we trigger stored procedure from Update statement of JDBC sender.
I think not possible using update statement.
> Can we call stored procedure from Querry statement, since I have read on other sdn threads that stored procedure calls on Oracle database are not allowed. If not possible to have "Execute stored procedure" would the function call (select * from table(function name)) work same as stored procedure.
Yes using select query you can call stored procedure.
>. In a JDBC sender the Querry statement and Update statement are executed in same session call and same database connection. What happens if the querry statement was not succesful, would the update be still triggered.
No select and update handles in the same session using the same thread so if one transaction fails update should not proceed.

JDBC callableStatement stored procedure call cancellation?

up vote0down votefavorite
I have a very complex oracle stored procedure that searches and retrieves some data. The procedure returns an output parameter - an oracle cursor. I execute the procedure by JDBC:
CallableStatement stmt = conn.prepareCall("{call myprocedure(?,?,?,?}");
The problem is, the queries can sometimes take quite long (few minutes) and i would like user to be able to cancel the query anytime by clicking button. I have reference to stmt object, but unfortunatelly calling stmt.cancel() (from other thread) has NO EFFECT.
On the other hand when i change the CallableStatement sql to some query like:
CallableStatement stmt = conn.prepareCall("select * from all_objects");
i get "java.sql.SQLTimeoutException: ORA-01013: user requested cancel of current operation" after calling stmt.cancel() - so thats the right reaction.
Does that mean than i cannot cancel stored procedure call via jdbc, but only simple select statements? Does anyone else had and resolved similar problem?
I guess i could cancel the query by oracle kill session, but i use connection pooling (jboss) and i have plenty of sessions for the same user existing.
Database Product Version is Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit Production JDBC Driver Version is 11.2.0.4.0
any help will be appreciated.

This property didnt help, still no reaction after statement.cancel().
I could not cancel the statment from the db size , so i decided to spawn new java thread and run the statement in that thread, and when user clicks cancel button i just cancel the thread, some snipper of code below:
               AtomicBoolean userCanceled - this must be AtomicBoolean or volatile variable, so other threads would see the change of variable after clicking button
               try{
                MyCallableQuery callable = new MyCallableQuery(rs,stmt,this,rsh,outParameter);
                FutureTask<T> queryTask = new FutureTask<T>(callable);
                ExecutorService executor = Executors.newFixedThreadPool(1);
                executor.execute(queryTask);
                while (!queryTask.isDone()){         //stil processing statement
                 Thread.sleep(100);
                      if (userCanceled)){               //user decided to cancel
                       futureTask1.cancel(true);
                       executor.shutdown();
                       throw new SQLException("User decided to cancel procedure call");
                 result = futureTask1.get();
                 //here the code after the resultset has been processed without cancelation
               catch (SQLException e}{
               //here the code when user decided to cancel like clearing the datatable
and my callable class is like:
public class MyCallable<T> extends ProcRunner implements Callable<T> {
    private ResultSet rs;
    private CallableStatement stmt;
    private ProcRunner procRunner;
    private ResultSetHandler<T> rsh;
    private Integer outParameter;
    public MyCallable(ResultSet rs,CallableStatement stmt,ProcRunner procRunner,ResultSetHandler<T> rsh,Integer outParameter){
        this.rs = rs;
        this.stmt = stmt;
        this.procRunner = procRunner;
        this.rsh = rsh;
        this.outParameter = outParameter;
    @Override
    public T call() throws Exception {
       T result = null;
      stmt.executeUpdate();
       rs = (ResultSet) stmt.getObject(outParameter);
       rs = this.wrap(rs);
       result = rsh.handle(rs);
    return result;

Multiple stored procedure run across clusters

Hi there,
Currently we are having a single Oracle 11g instance. All our stored procedures are run on this database either directly from within the database (DBMS_JOB) or called externally from front-end java web apps.
The question is we now have to cater for scenarios where there will lot more avenues (other java apps) calling the stored procedure and we want to provision for such scenarios without impacting the performance or agreed upon throughput back to the calling application.
One option I read was about clustering (RAC) and how this can be configured at the database level to transparently cater to a huge volume of stored procedure calls to the database without affecting (requiring changes on the calling entities). So the java front end apps will only refer to a single database but Oracle RAC configured for the database will handle the heavy load scenario in seamless and transparent fashion across the clusters
We don't want to split the execution of one single stored procedure run into multiple process for performance we have that part covered with optimizing the queries of the stored procedure
but we want to provision for a scenario where multiple apps can spawn calls to the stored procedures simultaneously and the database is efficient about handling these parallel stored procedure invocations and does not overwhelm under the pressure of large volume of stored procedure run causing degradation of stored procedure runtime/response time.
Please provide your thoughts.

If those stored procedures are making DML calls against more-or-less the same data, you will be introduce contention.
In a single instance (non-RAC) contention is within the SGA (buffer_cache, shared_pool, latches, enqueues). If the application is not scalable within the single instance, you will likely make performance worse when running it in RAC.
So, you must first evaluate how it works (or would work) in a single instance database -- find out if it scalable merely by adding hardware. If it is scalable but your current hardware is limited, you can consider RAC. If it is not scalable and you have serialisation or contention, performance would be worse in RAC.
Hemant K Chitale

Multiple Stored Procedures - One at a time

Hello everyone!
I´m going to start an interface that requires me to call multiple Stored Procedures, but they will not be called at the same time.
The legacy system has 3 stored procedures to be called, like this:
1 - SP number 1: it says to the legacy system that some data is going to come up and clean the previous data
2 - SP number 2: input data into the legacy system
3 - SP number 3: for each line above, more lines will be inserted - sort of header/line cenario
My question is: should I be able to achieve this goal using only PI 'normal' components or will I have to use BPM?
Thanks!
Ricardo Sancio Lóra
Brazil

Hi Ricardo,
According to my knowledge not required to use the BPM.
In that first stored procedure you can call the another stored procedure, internally database can take the all necessary actions.
Check this links
http://www.sommarskog.se/share_data.html
http://bytes.com/topic/sql-server/answers/79780-stored-procedure-calling-another-stored-procedure_
Regards
Ramesh

Having multiple Stored procedure in a single Business Service in OSB

Hi,
Please let me know is it possible to have multiple Stored Procedure inside one business service in OSB.
Regards,
Abdul

Hello Abdul,
It is not possible to serve multiple stored procedures/functions with one business service because one business service can be based on one adapter only and one DB adapter can interface one DB component only. You may have one stored procedure which internally makes call to all other procedures as per your requirement and from OSB, call this single stored procedure using one business service.
Regards,
Anuj

Response from one stored proc. to another stored procedure call in JDBC

Hi,
I have to call 2 stored procedures, where the response from first stored procedure ( an id) is mapped as a parameter to the second stored procedure call.
My question is that can this be achieved without using BPM?
Can we somehow map the response from the stored procedure 1 to stored procedure 2 parameter w/o using BPM?
I have to insert multiple rows using the stored procedure.
Should I use STATEMENT unbounded times ( which means stored procedure is called multiple times) or should I use the parameter as unbounded ( like an array, maybe define the parameter as an array in the stored procedure)?
From the performance standpoint, which approach is better?
Please suggest.

Hi Ardent !
I think you could use 2 mapping programs (message mapping objects) in your interface mapping. The first one, executes and returns the ID to a message type defined by you for internal use only between both stored procedure executions. The second ones uses that message type as source message and the XML required by the JDBC for the second stored procedure execution as target message type. This can be done without BPM.
Regards,
Matias.

Can a SQL Server stored procedure call an SAP function module?

Can a SQL Server stored procedure call an SAP function module.? The stored procedure will be called via a trigger when data records are added to a Z table.

You have two options:
- the other software can use the RFC SDK and call directly in the system
- the other software can use a database connect
Markus

Reading using Stored Procedure Calls

Hi All,
I have a scenario where I need to read data froma table and post it to ECC. A stored procedure call is used to generate the data from the database. How do I handle this in sender JDBC adapter?
XIer

Hey
there are some restrictions on executing stored procedures for Oracle,anyways have a look at the following blog
/people/jegathees.waran/blog/2007/03/02/oracle-table-functions-and-jdbc-sender-adapter
Thanx
Aamir suhail

Remote Stored Procedure Call Dispatcher WEB WERVICE

Hello all,
Environment: Windows OS, Oracle 10g, mod_plsql
I am looking for solutions to the following problem:
A way to dispatch calls to stored procedures from client to server with a minimal impact on performance.
We are looking at two possible solutions:
1) Making a call to a Remote Stored Procedure Call Dispatcher (RSPCDispatcher) stored procedure through mod_plsql.
2) Making a call to a Remote Stored Procedure Call Dispatcher (RSPCDispatcher) stored procedure through a web service.
Solution 1) is not the preferred one as you may already know that mod_plsql will not be supported starting 12g.
Solution 2) is the one we prefer as we believe that web services will be ever more supported in the future. When we move to 11g we may turn this web service into a native one (avoiding overhead in the OC4J for hosting the web service etc.).
We are looking for code examples and information pointers of how we could implement this dispatcher as a stored procedure in a DB package. We know that the implementation should be similar to the one done for mod_plsql in the OWA schema but the code there is obfuscated, so we could not borrow ideas from there.
We are not sure how to deal with the generalization of the above stated problem. We need to be able to pass to this dispatcher the stored procedure package and name we are invoking, ordered list of parameters (or parameters map), and the transport strategy (XML, JSON, etc.).
Basically, we are notsure how to deal with the USING clause of the EXECUTE IMMEDIATE statement. We can dynamically generate the SQL statement corresponding to the stored procedure we want to call, but we are not sure how to bind the parameters we are passing?
Also, we know that EXECUTE IMMEDIATE may be slow sometimes. So if could avoid it, this could further improve performance.
Perhaps the run-time generalized stored procedure execution may not be what we are looking for?! Perhaps we should include several design-time steps?! What about a script that given a package name (or just a single stored procedure) would generate a wrapper package which stored procudures' names would correspond to their respective counterparts in the given package which would take two parameters - the list of parameters in some sort of format, and the transport (content delivery strategy) and would return the result in the given content delivery strategy?! This script may also define the XSD of the XML message a stored procedure is called with (the parameter map) as well as the XSD of the XML result the stored procedure returns. Also the script could generate client code with the given language strategy (Java, .NET, etc.) for calling the RSPCDispatcher web service.
We request the following from the Oracle community folks:
a) Please, give us any relevant information that could be helpful to resolve this problem.
b) Any resource of how to inspect stored procedures in a package, its parameters, parameter types and direction (IN, OUT, or INOUT), etc.
Thank you very much in advance.
Regards,
Georgi

Hello all,
Environment: Windows OS, Oracle 10g, mod_plsql
I am looking for solutions to the following problem:
A way to dispatch calls to stored procedures from client to server with a minimal impact on performance.
We are looking at two possible solutions:
1) Making a call to a Remote Stored Procedure Call Dispatcher (RSPCDispatcher) stored procedure through mod_plsql.
2) Making a call to a Remote Stored Procedure Call Dispatcher (RSPCDispatcher) stored procedure through a web service.
Solution 1) is not the preferred one as you may already know that mod_plsql will not be supported starting 12g.
Solution 2) is the one we prefer as we believe that web services will be ever more supported in the future. When we move to 11g we may turn this web service into a native one (avoiding overhead in the OC4J for hosting the web service etc.).
We are looking for code examples and information pointers of how we could implement this dispatcher as a stored procedure in a DB package. We know that the implementation should be similar to the one done for mod_plsql in the OWA schema but the code there is obfuscated, so we could not borrow ideas from there.
We are not sure how to deal with the generalization of the above stated problem. We need to be able to pass to this dispatcher the stored procedure package and name we are invoking, ordered list of parameters (or parameters map), and the transport strategy (XML, JSON, etc.).
Basically, we are notsure how to deal with the USING clause of the EXECUTE IMMEDIATE statement. We can dynamically generate the SQL statement corresponding to the stored procedure we want to call, but we are not sure how to bind the parameters we are passing?
Also, we know that EXECUTE IMMEDIATE may be slow sometimes. So if could avoid it, this could further improve performance.
Perhaps the run-time generalized stored procedure execution may not be what we are looking for?! Perhaps we should include several design-time steps?! What about a script that given a package name (or just a single stored procedure) would generate a wrapper package which stored procudures' names would correspond to their respective counterparts in the given package which would take two parameters - the list of parameters in some sort of format, and the transport (content delivery strategy) and would return the result in the given content delivery strategy?! This script may also define the XSD of the XML message a stored procedure is called with (the parameter map) as well as the XSD of the XML result the stored procedure returns. Also the script could generate client code with the given language strategy (Java, .NET, etc.) for calling the RSPCDispatcher web service.
We request the following from the Oracle community folks:
a) Please, give us any relevant information that could be helpful to resolve this problem.
b) Any resource of how to inspect stored procedures in a package, its parameters, parameter types and direction (IN, OUT, or INOUT), etc.
Thank you very much in advance.
Regards,
Georgi

How to use Stored Procedure Call in Sender JDBC adapter

Hi All,
Could someone send me a blog on how to use Stored Procedure call in Sender JDBC adapter?
Xier

Hi Xler
refer these links
/people/yining.mao/blog/2006/09/13/tips-and-tutorial-for-sender-jdbc-adapter
http://help.sap.com/saphelp_nw04/helpdata/en/2e/96fd3f2d14e869e10000000a155106/content.htm
Also, you can check Sriram's blog for executing Stored Procedures,
/people/sriram.vasudevan3/blog/2005/02/14/calling-stored-procs-in-maxdb-using-sap-xi
/people/jegathees.waran/blog/2007/03/02/oracle-table-functions-and-jdbc-sender-adapter
This blog might be helpfull on stored procedures for JDBC
JDBC Stored Procedures
/people/siva.maranani/blog/2005/05/21/jdbc-stored-procedures
Please go through these threads and see if it helps...
Re: How to execute Stored Procedure?
Re: Problem with JDBC stored procedure
Thnaks !!

Transaction Handling via Multiple Stored Procedure Calls

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