Setting up a proxy connection in TopLink

Question

Using Jdeveloper 10.1.3.3 with an Oracle 10g database configured with OLS.
I am trying to follow the instructions which detail out Implementing Row-Level Security in Java Applications http://www.oracle.com/technology/pub/articles/dikmans-toplink-security.html.
I am getting the following errors.
1.
JBO-29000: Unexpected exception caught: javax.ejb.EJBException, msg=Exception [TOPLINK-4002] (Oracle TopLink - 10g Release 3 (10.1.3.3.0) (Build 070608)): oracle.toplink.exceptions.DatabaseException Internal Exception: java.sql.SQLException: ORA-01017: invalid username/password; logon denied Error Code: 1017; nested exception is: Exception [TOPLINK-4002] (Oracle TopLink - 10g Release 3 (10.1.3.3.0) (Build 070608)): oracle.toplink.exceptions.DatabaseException Internal Exception: java.sql.SQLException: ORA-01017: invalid
2.
Exception [TOPLINK-4002] (Oracle TopLink - 10g Release 3 (10.1.3.3.0) (Build 070608)): oracle.toplink.exceptions.DatabaseException Internal Exception: java.sql.SQLException: ORA-01017: invalid username/password; logon denied Error Code: 1017; nested exception is: Exception [TOPLINK-4002] (Oracle TopLink - 10g Release 3 (10.1.3.3.0) (Build 070608)): oracle.toplink.exceptions.DatabaseException Internal Exception: java.sql.SQLException: ORA-01017: invalid username/password; logon denied Error Code: 1017
This is occurring in the following lines:
* Returns an isolated client session from the server session. This session
* uses a particular policy if an isolated class is being read.
* @return isolated client session if the domain is isolated, otherwise a
* regular session.
private Session getSession(Class domainClass) {
Server server =
(Server)sessionManager.getSession(new XMLSessionConfigLoader(), XXYY_SESSION_CONFIG,Thread.currentThread().getContextClassLoader());
boolean isolated = server.getClassDescriptor(domainClass).isIsolated();
if (isolated) {
ConnectionPolicy policy = createPolicy(server);
return server.acquireClientSession(policy);
} else {
return server.acquireClientSession();
thanks
S-

Answer 1

ailitche,
I have permission you've addressed.
And I am able connect to the database from SQL Worksheet as different proxy users and see the data they are allowed to see by setting the following:
alter user sking grant connect through dbadminuser
with roles clerk, reports;
But, now I am getting the following errors
JBO-29000: Unexpected exception caught: javax.ejb.EJBException, msg=java.lang.NullPointerException; nested exception is: java.lang.NullPointerException
Do you have an example of getSession where it set the user?
for example:
private Session getSession(Class domainClass) {
Server server =
(Server)sessionManager.getSession(new XMLSessionConfigLoader(), XXYY_SESSION_CONFIG,Thread.currentThread().getContextClassLoader());
boolean isolated = server.getClassDescriptor(domainClass).isIsolated();
if (isolated) {
ConnectionPolicy policy = createPolicy(server);
return server.acquireClientSession(policy);
} else {
return server.acquireClientSession();
thanks
S-