ORA-09795: szrbuild: malloc of role structure failed.
Cause : The allocation of memory for an internal structure used to hold a role descriptor failed.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Check the UNIX error number for a possible operating system failure.
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.