1. SQL> Shutdown immediate
2. $ cp /oracle/maxprd1/system01.dbf to /oracle/maxprd1/maxlive/system01.dbf
3. SQL> startup mount
4. SQL> alter database rename file '/oracle/maxprd1/system01.dbf' to '/oracle/maxprd1/maxlive/system01.dbf';
5. SQL> alter database open.
6. $ rm /oracle/maxprd1/system01.dbf

and do RTFM and STFW before asking.