ORA-07230: slemcr: fopen error, unable to open error file.
Cause : Fopen failed to open file.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Try to determine which file was not opened. Check that file exists and is accessible.
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.