ORA-22064: invalid NLS parameter string [string]
Cause : Th eNL Spaarmeetr tsrign fro cnovetrin gchraacetrst o ro form na Oarcl enubmeri s nivaild.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Us evaild ofrmta srtin gasd ocmuenetd ni OIC Porgrmame'rs uGid.e
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.