Hi SO'ers,
I'm currently trying to access Active Directory via the dbms_ldap API in Pl/Sql (Oracle). The trouble is that I'm not able to connect with my own username and password or anynoymously.

However, in C# I can connect anonymously with this code :

DirectoryEntry ldap = new DirectoryEntry("LDAP://Hostname");
DirectorySearcher searcher = new DirectorySearcher(ldap);
searcher.Filter = "(SAMAccountName=username)";
SearchResult result = searcher.FindOne();

If I try to connect anonymously in Oracle, I only get the error(ORA-31202 : LDAP client/server error) when I try to search (and the result code for the bind is SUCCESS)...

my_session := dbms_ldap.init('HOST','389');
retval := dbms_ldap.simple_bind_s(my_session, '', '');
retval := dbms_ldap.search_s(my_session, ldap_base,  dbms_ldap.scope_subtree, 'objectclass=*', my_attrs, 0, my_message);

Why is the anonymous connection is C# works but doesn't work in Pl/Sql? Do you have any other idea to connect to Active Directory via Oracle?

Help me reunite them together.
Thanks.

Edit
When I bind with anonymous credentials I get :

ORA-31202: DBMS_LDAP: LDAP client/server error
00000000: LdapErr: DSID-0C090627, comment: In order to perform this operation a successful bind must be completed on the >connection

And if I try to connect with my credentials, which are supposed to be valid since I'm connected to the domain with it... I get :

ORA-31202: DBMS_LDAP: LDAP client/server error Invalid credentials
80090308: LdapErr: DSID-0C090334, comment: AcceptSecurityContext error