Registering Oracle Location

Question

Hi,
I need to connect to table/view in, say schema A. I don't have direct access to A.
But I have Login/Password for another schema, say B. Schema B has read (select) grant from A ( I can access the data through Toad).
I have registered the Oracle location to A. But I am getting the following error when
I am trying to deploy the mapping.
ORA-06550: line 17, column 24:
PL/SQL: ORA-00942: table or view does not exist
How do I register the location, to get the access to table/view in B through A?
Thanks,
Harsha

Answer 1

Hi Harsha
I have no problem for the access by set the source schema and dblink in mapping's configuration. My situation is exactly as same as yours. Let me explain in detail.
Firat of all, my data source is also in a different database, even in differenet machine from the DW machine. So for sure, we have to access the data source by database link. Let's call the data source as Database S.
Second, my data sources cross four schemas in Database S. I don't have direct access to all those four schemas, let's call them as Schema A, B, C, and D. Instead, Schema E is created in Database S, which is granted SELECT privilleges on all the talbles in A, B, C and D.
Third, on your target DB, create the database link, e.g. named as DBLNK_DW_ACCESS, by using Schema E, point to Database S.
Now, what's done in my OWB client
1. I have 4 source modules created corresponding to A, B, C and D. All of them are registered as Schema Name, E.
2. In my mapping, the source table is dragged from the source module.
3. In the configuration, for the source table only, set the actual schema name and dblink. For example, Schema A, DBLNK_DW_ACCESS.
Everything is fine for my EDW running, which has be on Client side for more than one year.
If you still have some problem. Check the Generated Scripts by doing this:
In Deployment Manager, right click your mapping, set the action as Create and then do the deployment. But not really do the deployment, instead just save the generated script when the deploy windoe popup. Then cancle the deployment and Reset the action.
Now, take a look your saved script. Focus on the SELECT statement in the Cursor. The FROM clause should look like : SchemaName.TableName@DblnkNmame. For example: A.TableName@DBLNK_DW_ACCESS.
If not, the access doesn't work for you. I had this problem on one of my server and cann't figure why. But the problems gone when I unregister the location in Audit Browser and do the register again.
Hope this help.
Good luck,
Daming