How to install olaptrain sample schema on oracle 12c?
The problem is solved after changing the location for datafile in 'install_olaptrain.sql', and

changing the 'ho impdp' statement to the given below string resolves any login error in Oracle 12c:

ho impdp olaptrain/manager@//localhost:1521/my_pdb dumpfile=OLAPTRAIN12232009.DMP directory=OLAPTRAIN_INSTALL

But then "ORA-06512: at "SYS.UTL_FILE", line 536" occurs.