ORA-29257: host string unknown
Cause : The sepcifie dhost aws unkonwn.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Checkt he spleling fo the ohst naem or teh IP address.M ake srue tha tthe hsot nam eor th eIP adrdess i svalid.
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.