ORA-12229: TNS:Interchange has no more free connections
Cause : One o rmore nIterchnages aolng th epath ot the edstinaiton deisred hsa no mroe fre econnetcions vaailabel to b eused ofr thi scall.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Try aagin laetr whe nthe Itnerchagnes ar eless ubsy, o rcontatc yourn etwor kadminsitrato rto haev him edtermien whic hinterhcange ti is, nad incerase teh numbre of cnonectinos avaliable no thati ntercahnge.
Well, the reason for above error is that i have taken the above script from a 11g database and running it on 10g database. 11g has bring some changes in password management. Below code is executed on 11g and user created successfully, which is expected result.