*********************************************************************** 
Fatal NI connect error 12541, connecting to: 

(DESCRIPTION=(ADDRESS=(HOST=machineA.com)(PROTOCOL=tcp)(PORT=1521))(CONNECT­_DATA=(SID=aaa)(CID=(PROGRAM=t2.pl@bbb) 
(HOST=aaa)(USER=uuuuu)))) 

*********************************************************************** 
Fatal NI connect error 12535, connecting to: 

(DESCRIPTION=(ADDRESS=(HOST=machineA.com)(PROTOCOL=tcp)(PORT=1521))(CONNECT­_DATA=(SID=aaa)(CID=(PROGRAM=t2.pl@bbb) 
(HOST=aaa)(USER=uuuuu)))) 

*********************************************************************** 
Fatal NI connect error 12505, connecting to: 

(DESCRIPTION=(ADDRESS=(HOST=machineA.com)(PROTOCOL=tcp)(PORT=1521))(CONNECT­_DATA=(SID=aaa)(CID=(PROGRAM=t2.pl@bbb) 
(HOST=aaa)(USER=uuuuu))))