Takes in an object owner and name and tries to follow synonym links to find out the real owner and name.
Then verifies that the base object exists. RETURNs TRUE if the base object exists, else FALSE
driacchelp.do_syn(
p_objtype IN VARCHAR2,
p_owner IN OUT VARCHAR2,
p_object IN OUT VARCHAR2,
p_func IN OUT VARCHAR2,
p_link IN OUT VARCHAR2)
RETURN BOOLEAN;