How to find Machine Id of a Client Machine.

Question

hi
Is there any way to find MAC ID of a Client Side Machine. because IP_ADDRESS is not Satisfying all the Security requirements.
Please Provide me the Solution or if this type of Thead is already exists in the Forum then Pls Provide me the Link.

Answer 1

As Faust said - this is not possible in Oracle PL/SQL (not supported). The only alternative is to write a custom function to obtain the Mac address.
Such a function will need to be in Java or created as an external procedure (a DLL in Windows or Shared Object lib on Unix).
However - even if you code such a function how can it obtain the Mac address? The external process or Java procedure cannot obtain or access the TCP socket handle that Oracle uses for that client session.
If I'm not mistaken, when dealing with a shared server process, it will not even know what the handle is - as the communication part with the client session is handled by the dispatcher processes. Which means (if I'm correct with this assumption) that the shared server session has no TCP socket handle at all to reference.
Let's assume I'm wrong and in both cases the socket handle exists in the Oracle server - how do you get Oracle to pass that to a Java proc or an external proc? There is no variable available in PL/SQL or SQL that allows you access to that session's client socket handle.
I do not see a feasible solution for what you want to do. The best would be to record this at two levels. At firewall level record Mac address, IP address and time - in Oracle record IP address and time - combine these two logs for marrying the one with the other.