SBL-OMS-00203: Error (null) invoking method "(null)" for Business Service "(null)"

We recently implemented Siebel and keep running into a few SBL errors now and then. We were being bugged by a SBL-OMS-00203 and here is a solution that worked for SBL-OMS-00203

ORA-06512

ORA-06512 or ORA 6512 is a common error faced by oracle users and administrators alike during the operations of an oracle database. The ORA-06512 error in itself does not indicate the actual issue or an exception code.

ORA-00904 and ORA-01722 calls from developers

I am surprised that many of the developers cannot even solve simple oracle errors like ORA-00904 and ORA-01722. These errors are caused by issues in your code, do not google and call your dba asking if the server is still up or if its running into some issue.

If you are a newbie PL/SQL developer, spend some time on ORA-06550 while you are reading through the above 2 errors