Create tablespace "error in creating database file, access denied (OS 5)"
Do you have permission on this directory?
Under which user are you running SQL*PLUS? Administrator? – 
if no than got permission first 

if yes 

CREATE TABLESPACE lmtbsb DATAFILE 'file_path/lmtbsb01.dbf' SIZE 50M
    EXTENT MANAGEMENT LOCAL AUTOALLOCATE;