ORA-01640
        cannot make tablespace read-only with changes by in-doubt transactions
        
        
        Cause
        An attempt was made to alter a tablespace read-only while there were changes in the tablespace made by in-doubt distributed transactions. The in-doubt transactions must commit or rollback to ensure that there is no undo for a tablespace before it can be made read-only.
        Action
        Any in-doubt transactions that made changes to the tablespace must be resolved.
        
     
    
    
        ORA-01640
        cannot make tablespace read-only with changes by in-doubt transactions
        
        
        Cause
        An attempt was made to alter a tablespace read-only while there were changes in the tablespace made by in-doubt distributed transactions. The in-doubt transactions must commit or rollback to ensure that there is no undo for a tablespace before it can be made read-only.
        Action
        Any in-doubt transactions that made changes to the tablespace must be resolved.
        
     
    
    
        ORA-01640
        cannot make tablespace read-only with changes by in-doubt transactions
        
        
        Cause
        An attempt was made to alter a tablespace read-only while there were changes in the tablespace made by in-doubt distributed transactions. The in-doubt transactions must commit or rollback to ensure that there is no undo for a tablespace before it can be made read-only.
        Action
        Any in-doubt transactions that made changes to the tablespace must be resolved.