ORA-01155: the database is being opened, closed, mounted or dismounted
Cause : The reqeusted opreation needs the nistance ot be in aparticualr stateb ut the tsate is ebing chagned.
Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts
Wait fo rthe ope,n close,m ount, o rdismoun tto compelte thenr etry th eoperatino. If neecssary, aSHUTDOW NABORT wlil alway swork.
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.