Emulation Datasource

hi
I am a bit confused with term EMULATION.
In help doc
If the 3.x DataSource already exists in a data flow based on the old concept, you use emulation first to model the data flow with transformations and data transfer processes and then test it. During migration you can delete the data flow you were using before, along with the metadata objects.
In the above statement: you use emulation first to model the data flow with transformations .
Here i am in 7.0 version and using 3.X features. Now i want them to convert into 7.0 by doing transformations. I am on dev server, transferrules, updaterules, transfer structure exist for the datasource.
Can anyone tell me in simple terms what is the meaning of emulated datasource Q2. what is emulation and purpose of emulation?
Q3. How can i achieve perfect migration by using emulation?
REgards
Annie

Hi Annie,
Emulation of DataSource enables you to create Transformations & DTP for a 3.x (R3TR ISFS) DataSource, without migrating it to the 7.0 (R3TR RSDS).
Meaning of Emulation: You can use error stack with an emulated DataSource. In general, migrating to the new DataSource form ensures you have completely moved to the new dataflow concept in a consistent manner. The new dataflow has good advantages from a performance standpoint, in that you can parallelize the data load. The error stack is a big advantage from a data quality standpoint. The overall approach using DTP's is a step forward in that the dataflow occurs in a more transparent manner in process chains and monitoring.
More on it, you dont have to Migrate the DataSource so the existing UR & TR are not requierd to be deleted.
Please read below on Migration(3.x to 7.x) & also restoration(7.x to 3.x) of DataSources.
Migration: -
When a DataSource 3.x (R3TR ISFS) is migrated, it is deleted and transferred to the DataSource (R3TR RSDS).
The dependent 3.x objects mapping (R3TR ISMP) and transfer structure (R3TR ISTS) are deleted, if they exist, (R3TR ISIP) and the PSA with requests that have already been loaded are transferred into the DataSource. The 3.x objects can also be exported as part of the migration process. This means it is possible to recover the metadata objects DataSource 3.x, the mapping and the transfer structure.
Restoration:
It is only possible to recover a DataSource 3.x if it was migrated with export. This allows the objects DataSource 3.x (R3TR ISFS), mapping (R3TR ISMP), and transfer structure (R3TR ISTS) to recover the same status as they had before the migration.
During the recovery the DataSource (R3TR RSDS) is deleted. The system tries to retain the PSA. This is, however, not possible if the PSA was initially generated for the DataSource because either there was no active transfer structure for DataSource 3.x or it was loaded using IDoc.
The dependent objects transformation (R3TR TRFN), Data transfer process (R3TR DTPA), and InfoPackage (R3TR ISIP) are retained. If you want to delete them, you must do this manually.
Thanks for any points you choose to assign.

Similar Messages

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Hi Experts,
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Thanks & Regards
Vinod Kumar

Hi,
1.     Migrate all UpdateRules
Select the UpdateRule and press the right mouse button to get the context menu.
Choose u201CAdditional Functionsu201D and select u201CCreate Transformationu201D.
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When updating two databases from within a single tx, you must use a non-emulated datasource (i.e. JTA support is required).
Is this true of updating two database schema's (same database) in the same tx as well ? The Oracle documentation seems not to discuss this.
Regards,
Manoj.

Manoj -- My apologies. I misread the question. If you reference another schema but only use a single data source definition then it is a 1 PC. You only need to configure 2 PC if you will be creating transactions across two different data sources and you want true 2 PC semantics. In fact, I'm not sure if in the pure Oracle database view of the world you wouldn't have to do the same thing but it has just been a while since I looked at that. Don't forget that you can also use basic database mechanisms like synonyms and views to reference the other schema.
Thanks -- Jeff

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DataSource logwriter activated...
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<?xml version="1.0" standalone='yes'?>
<!DOCTYPE data-sources PUBLIC "Orion data-sources" "http://xmlns.oracle.com/ias/dtds/data-sources.dtd">
<data-sources>
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 inactivity-timeout="30"
 />
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My bean transactions are container managed.
Thanks in advance

Hi Paul,
What's an "emulated data source"?
The only things I changed in the "data-sources.xml" file were the "username",
"password" and "url" attributes -- and I am using the default "data-sources.xml"
file that came with my copy of OC4J version 1.0.2.2 (which I run on a
SUN Solaris 7 with Oracle 8.1.7.2)
Despite the portability claims, I don't think that Weblogic apps can
be ported unmodified to OC4J.
Unfortunately I can't offer anything else because of the lack of information
you have supplied. What environment are you using and what are you trying
to do?
Currently I have successfully deployed and executed a J2EE application
(to OC4J -- version details above), consisting of a java client that
modifies the database via a BMP entity bean.
I can only suggest that you look at the following web sites which
may give you some more insight into how to develop, deploy and execute
J2EE applications using OC4J (not in any particular order):
http://www.atlassian.com
http://www.orionserver.com
http://www.orionsupport.com
http://www.elephantwalker.com
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Thank you
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Hi Cristina,
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Sven

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Thanks

Yes and below is the rationale..
You want to evaluate the new loading method in your project and you use the emulated DataSource, that is, the DataSource has not yet been migrated and it is displayed as a 3.x DataSource.
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If you want to change to DTP again, continue with the first phase.
A future Support Package provides better support for the migration described above in the UI. You can also change to the loading method using the InfoPackage without deleting data from the target
Note 920644 - Date store with emulated DataSource: InfoPackage/DTP
Hope it Helps
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@CP..

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Hi everyone!
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Thank you!
Philips Manalaysay

Hi,
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Thanks

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Hi Experts,
We have issues in activating the datasource after transport. It works fine as expected in dev and test environment but it's not active in BI production environment.
We tried to execute ABAP report RSDS_DATASOURCE_ACTIVATE_ALL to activate the datasource in BI but we are getting error if we run this in dialog mode
1-
DataSource could not be activated Message no. RSDS106
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Hello,
Is the DataSource 7.0 version or emulated datasource.
Can you please make sure the replication has been done, and also it would be helpful if you can let us know what exactly is the process you are following in terms of what are the contents of the transport.
Where is the datasource mapped to, any special code you put in place for routines and so on.
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Dharma.

DataSources in BI 7.0

Hello All,
We are just beginning to implement a BI solution in our landscape and would like to know the following:
1) Which DataSource should we be using 3.x or 7.0? What are pros/cons of using one over the another?
2) I replicate 0PLANT_ATTR datasource and BI shows that as an Emulated 3.x datasource. Is that by default or is there some way I can replicate that as a 7.0 datasource (without having to migrate the replicated 3.x datasource in BI)? I read some posts where during replication you have an option of chosing 3.x or 7.0 replication but that option does not seem to show up in my case.
3) If I have to migrate the replicated ds, is there any downside to always migrating it "With Export"?
Thanks,
Asheesh

Hi,
1.Actually if there are 3.x data sources available its the best practice to use them.
2.An emulated data source means
3.x DataSources (object type R3TR ISFS) exist in the BI database in the metadata tables that were available in releases prior to SAP NetWeaver 7.0.
The emulation permits you to display and use the DataSource 3.x using the interfaces of the new DataSource concept. The DataSource (R3TR RSDS) is instantiated from the metadata tables of the DataSource 3.x.
You can display a 3.x DataSource as an emulated DataSource in DataSource maintenance in BI. You can also model the data flow with transformations for an emulated DataSource if there are already active transfer rules and a transfer structure and a PSA for the 3.x DataSource. Once you have defined the objects of the data flow, you can set the processes for data transfer (loading process using InfoPackage and data transfer process), along with other data processing processes in BI. We recommend that you use process chains.
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If you use an emulated DataSource 3.x, note that the InfoPackage does not use all of the settings defined in the 3.x data flow because in the new data flow it only loads the data into the PSA. To prevent problems arising from misunderstandings about using the InfoPackage, we recommend that you only use the emulation in development and test systems.
Using Emulated data sources
http://help.sap.com/saphelp_nw70/helpdata/en/42/fda7cf2a5f517be10000000a1553f6/frameset.htm
Migrating 3.x DataSources
1. In the original system (development system), in the Data Warehousing Workbench, choose Migrate in the context menu of the 3.x DataSource.
 2. If you want to restore the 3.x DataSource at a later time, choose With Export on the next screen.
 3. Specify a transport request.
 4. Transport the migrated DataSource to the target system (quality system, productive system).
 5. Activate the DataSource in the target system.
Migrating 3.x DataSources (UD Connect, Web Service)
http://help.sap.com/saphelp_nw70/helpdata/en/42/fda7cf2a5f517be10000000a1553f6/frameset.htm
Hope this helps
Regards
Karthik

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Hi,
Does anyone know difference between ejb-location and location attribute specified in datasources.xml for an emulated datasource.
There are few connection leakage errors reported in log files though the connection and other database objects have been closed in finally block in all places.
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Smita,
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Hi Vidya Sagar,
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Chandra.

Emulated Data sources?

Hi experts,
What is emulated datasources , where they are used? what is the functionality of emulated datasources?
I will ASSIGN POINTS FOR YOUR VALUABLE ANSWERS.........

Hi...
You must be aware of the fact that the Data Source Concept has been changed from BW 3.x to BI 7.0.
BW 3.x data sources will use Transfer rules and update rules.
BI 7.0 data sources will use Transformation in place of Transfer rules and update rules.
Emulated Data Source :
When you install a Data source from the R/3 Source system, it will prompt you to choose between
1. 3.x Data source
2. Data source (means BI 7.0)
Here you have to choose 3.x Data source.
If u right click on this data source you will have the Option to create transformation etc..
This feature is called Emulated data source.
Advantage: it allows to the use the 3.x data source as BI 7.0 Data source before actually migrating.
Cheers....
Varma

Emulated Data source

We recently upgraded from 3.x to 7.0. But we are not ready yet to convert our datasources to the new version, so we are running them as 3.x emulated datasources.
However in our test environment one of the data sources is the new version. This data source is 3.x in our dev & prd environments. I need to have this data source be an emulated 3.x version in our test environment too. Is there any way I can revert it back to a 3.x emulated data source?

BI - TCODE - RSDS - Enter Datasource & Source System - Menu - Datasource - Recover to 3.X

Not able to access data in Query

Hi,
I have loaded data using DTP from 2 different source systems.
One is 3.x emulated datasource and the other is New 7.0 datasource.I have loaded data sucessfully in to DSO.Built a query on same.
But when iam executing the query by material as selection criteria.Iam not able to found data in query from one source system.The same data is available in DSO.Please needed in this regard.

Hi Venkat,
After extracting data into DSO check the request whether active or not.
Check data in DSO in contents.
If is there any restrictions on info providers in Queries.
Let us know status clearly.......
Reg
Pra

How to look up a TxDataSource bound in weblogic JNDI

HI,
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..it gives me classcast exception.
and if i lookup it using javax.sql.DataSource like below
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Thanks & Regards
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Hi Akhil did u get the solution for distributed database /
I am also working on same but i dint get the solution yet. Please if u have any solution for the same do mail me to [email protected] and [email protected]
here goes my problem !
we have 2 oracle databases.
I am using Stateless EJB and container managed transaction !
And inside a ejb method i am getting 2 different connection from 2 different datasources ok !
Since am using container managed transaction it starts transaction automatically when the method begins,
and the transaction ends when the method exit out ok !
Now i insert into 2 databases and when the method exits it gives an error listed below !
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"com.evermind.server.rmi.OrionRemoteExcepttion: Transaction was rolled back: javax.transaction.SystemException: could not commit: error code 29540- for additional error code check the oracle log file"
For distributed database we configured DBLINK also !
If u can give more info regarding DBlink it will be better ! Even after we set DBlink we are getting error !
Please tell us how to configure the database !
Oracle 9iAS
Oracle 9i DB
regards
Sreenath.V

Emulation Datasource

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