Check Scope for Oracle dba when got an old db

When I got an new Oracle db, I will do following

1. Operation System passwd, Administrator/root/oracle

cat /etc/passwd

Check users in Winnt

2.df -k

3.echo $ORACLE_SID,$ORACLE_HOME,$ORACLE_BASE

cat $ORACLE_HOME/network/admin/tnsnames.ora,

cat $ORACLE_HOME/network/admin/listener.ora

4.cat $ORACLE_BASE/admin/$ORACLE_SID/pfile/init$SID.ora

5. cat $ORACLE_BASE/admin/$ORACLE_SID/bdump/alert_$SID.log

6. ls -l $ORACLE_HOME/dbs

7 cat /etc/sysctl.conf

8. more /etc/proc/sys/shmmax

9.ps -ef|grep lsnr

10. ipcs -mb

11 svrmgrl

connect internal;

select * from v$logfile;

select tablespace_name from dba_tablespaces;

select tablespace_name,file_name from dba_data_files;

select * from dba_temp_files;

select tablespace_name,sum(bytes) from dba_free_space

group by tablespace_name;

select * from v$control_file;

select * from v$recover_file;

archive log list;

select * from v$database;

select * from v$parameter;

select * from v$instance;

select * from v$sess_wait;

select * from v$system_event;

IS it RAC