delete database manually

Hi
  I have installed Oracle 9i on solaris but it has some problem in the database 
creation.
When I am trying to startup database it's giving me this error
  ORA-01079: ORACLE database was not properly created, operation aborted
  
I have tried to delete database using dbca tool but its also giving some error
so I want to drop previously created database manually.
   
  Can you send me all the steps for delete database manually?

                
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