select * from v$version;

select * from dba_registry_database;
select dbid, name, open_mode, database_role, platform_name from v$instance;
select dbms_utility.port_string from dual;
set serveroutput on
declare
ver VARCHAR2(100);
compat VARCHAR2(100);
begin
dbms_utility.db_version(ver, compat);
dbms_output.put_line('Version: ' || ver ||' Compatible: ' || compat);
end;
/

select * from dba_registry;

set serveroutput on

declare
inst_tab dbms_utility.instance_table;
inst_cnt NUMBER;
begin
if dbms_utility.is_cluster_database then
dbms_utility.active_instances(inst_tab, inst_cnt);
dbms_output.put_line('-' || inst_tab.FIRST);
dbms_output.put_line(TO_CHAR(inst_cnt));
else
dbms_output.put_line('Not A Clustered Database');
end if;
end;
/

select protection_mode, protection_level, remote_archive, database_role, dataguard_broker,guard_status

from v$database;

conn /as sysdba

archive log list;

select flashback_on from v$database;

select force_logging,supplemental_log_data_min, supplemental_log_data_pk, supplemental_log_data_ui,

supplemental_log_data_fk, supplemental_log_data_all
from v$database;

select * from v$controlfile;

select l.group#, lf.type, lf.member, l.bytes, l.status LOG_STATUS, lf.status LOGFILE_STATUS

from v$log l, v$logfile lf
where l.group# = lf.group#
order by 1,3;

show parameter spfile

create spfile from pfile...
create pfile from spfile;
create spfile from memory;
create pfile from memory;

select instance_name, host_name, status, archiver, database_status, instance_role, active_state

from v$instance;

select name, value from gv$parameter where name = 'resource_limit';

select profile, resource_name, limit from dba_profiles order by 1,2;
select username, profile from dba_users where account_status = 'OPEN' order by 1;
select d.username, u.account_status
from dba_users_with_defpwd d, dba_users u
where d.username = u.username and account_status = 'OPEN'
order by 2,1;

select filename, status, bytes from v$block_change_tracking;

DBMS_FEATURE_USAGE_REPORT

select * from database_properties;

select owner, object_type, COUNT(*)

from dba_objects
where status = 'INVALID'
group by owner, object_type;