Oracle Client Identifier, Web, JPA

Question

I am working on a Web application that uses Struts along with EJB3. I want to user Oracle Virtual Private Database to restrict access to data based on the current user.
Is there any way to set the Client_Identifier based on the Principal currently using the connection? I am looking to see if there are perhaps any Interceptors I could use or some function of JPA that allows me access to the connection just before it is actually used. Any idea?

Answer 1

865496 wrote:
Hello,
in my java web app running on Weblogic which uses connection pooling, I am calling an Oracle Stored Proc that sets client identifier to userid using dbms_session.set_identifier
I then retrieve it in triggers attached to db tables to capture before-after image
I must have missed a step because this is what I find (testing locally):
1. I login to my app as USER1 and update some data
2. I check the audit tables and sure enough last_updated_by is set to USER1
3. Without logging out, I start a different browser (Firefox, in step 1 I used Chrome) and login as USER2
4. I now switch to USER1 session in Chrome browser (still logged in as USER1) and update some data
5. This time I see that the audit tables show last_updated_by as USER2 (instead of USER1)
What am I missing?
Many thanks!since Connection Pooling is being used, do you acknowledge that both USER1 & USER2 could actually use the same Oracle session to execute SQL?
At what point in time is the Stored Procedure that sets Client Identifier actually called?
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