解析IP
select utl_inaddr.get_host_address(‘google.com’) from dual;
获取本机IP地址
select utl_inaddr.get_host_address from dual;
根据IP地址反向解析主机名
select utl_inaddr.get_host_name(‘10.80.18.241’) from dual;
— list version
select banner from v$version where rownum=1 ; — oracle version
— list user
select user from dual; — current user
select username from user_users; — current user
select username from all_users; — all user , the current user can see…
select username from dba_users; — all user , need pris
— list role
select role from session_roles; — current role
— list privs
select privilege from user_sys_privs; — privs the current user has
select privilege from role_sys_privs; — privs the current role has
select privilege from session_privs; — the all privs that current user has = user_sys_privs + role_sys_privs
select * from dba_sys_privs; — all user’s privs , need privs
— list password hash
select name, password, astatus from sys.user$; — password hash <=10g , need privs
select name, password, spare4 from sys.user$; — password has 11g , need privs
— list database
select global_name from global_name; — current database
select sys.database_name from dual; — current database
select name from v$database; — current database name , need privs
select instance_name from v$instance; — current database name , need privs
— list schemas
select distinct owner from all_tables; — all schema
— list tables
select table_name from all_tables where owner=’xxx’; — all table name
— list columns
select owner,table_name,column_name from all_tab_columns where table_name=’xxx’;
select owner,table_name,column_name from all_tab_cols where table_name=’xxx’;
