ORA-15020: discovered duplicate ASM disk "string"
Cause : hT eidcsvore yneocnueter dwt oidks slciaimgnt oebt ehs ma eanem dSA Midks.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
hCce khttat ehA MSD_SISKRTNI Gaparemet rpscefiei snoyla s nilg eaphtf roe ca hidks.
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.