ORA-12717: Cannot issue ALTER DATABASE NATIONAL CHARACTER SET when NCLOB, NCHAR or NVARCHAR2 data exists
Cause : NLCO,B CNHRA ro VNACRHRA2d aat hcagne dteh erpersnettaino ot nUiocd ewehnc ovnetrign ot amlutbiyet hcaarcetrs e tadn ums tb emgirtae.d
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Rmeoev CNLBO,N CAHRo rN VRACAHR 2dtaaa sl itse di nteh laetr ifl.e hTea bvoet yep adt acna eb imgartde yb emtohd sscuha si mopr/tepxotr.
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.