很变态的问题： 如何通过SQL语句获得数据库服务器的IP地址和名称？

Question

好象在系统v$session表中。
desc v$session;
select * from v$session;   /*address,hostname*/

Answer 1

SQL> select SYS_CONTEXT('USERENV','IP_ADDRESS'),sys.login_user from dual;SYS_CONTEXT('USERENV','IP_ADDR                                                   LOGIN_USER
-------------------------------------------------------------------------------- --------------------------------------------------------------------------------
172.31.10.22                                                                     ECSQUERY

Answer 2

SYS_CONTEXT獲取的是用戶的ip地址，而不是服務器的ip地址。

Answer 3

其實用戶不用去關心具體ip地址是多少，而且不好記憶。
name server把ip地址和服務器名對應起來，客戶端聯接了服務器不用去關心ip，而且當服務器的ip地址變化后，客戶端也不需要進行重新配置。

Answer 4

给使用的每台机起个易记的名称,
col machine format a40;
select machine from v$session;

Answer 5

//===获取系统信息
insert into drop_log
     (session_id,
     drop_time,
     ip_address,
     object_owner,
     object_name,
     object_type,
     drop_by_user)
     values(USERENV('SESSIONID'),
     sysdate,
     SYS_CONTEXT('USERENV','IP_ADDRESS'),
     sys.dictionary_obj_owner,
     sys.dictionary_obj_name,
     sys.dictionary_obj_type,
     sys.login_user);
//

Answer 6

v$instance可以获取到数据库名称，数据库主机地址就没太在意

Answer 7

set serveroutput on size 400000
set feedback offdeclare   cursor c_ctx is select 
          SYS_CONTEXT('USERENV','TERMINAL') terminal,
          SYS_CONTEXT('USERENV','LANGUAGE') language,
          SYS_CONTEXT('USERENV','SESSIONID') sessionid,
          SYS_CONTEXT('USERENV','INSTANCE') instance,
          SYS_CONTEXT('USERENV','ENTRYID') entryid,
          SYS_CONTEXT('USERENV','ISDBA') isdba,
          SYS_CONTEXT('USERENV','NLS_TERRITORY') nls_territory,
          SYS_CONTEXT('USERENV','NLS_CURRENCY') nls_currency,
          SYS_CONTEXT('USERENV','NLS_CALENDAR') nls_calendar,
          SYS_CONTEXT('USERENV','NLS_DATE_FORMAT') nls_date_format,
          SYS_CONTEXT('USERENV','NLS_DATE_LANGUAGE') nls_date_language,
          SYS_CONTEXT('USERENV','NLS_SORT') nls_sort,
          SYS_CONTEXT('USERENV','CURRENT_USER') current_user,
          SYS_CONTEXT('USERENV','CURRENT_USERID') current_userid,
          SYS_CONTEXT('USERENV','SESSION_USER') session_user,
          SYS_CONTEXT('USERENV','SESSION_USERID') session_userid,
          SYS_CONTEXT('USERENV','PROXY_USER') proxy_user,
          SYS_CONTEXT('USERENV','PROXY_USERID') proxy_userid,
          SYS_CONTEXT('USERENV','DB_DOMAIN') db_domain,
          SYS_CONTEXT('USERENV','DB_NAME') db_name,
          SYS_CONTEXT('USERENV','HOST') host,
          SYS_CONTEXT('USERENV','OS_USER') os_user,
          SYS_CONTEXT('USERENV','EXTERNAL_NAME') external_name,
          SYS_CONTEXT('USERENV','IP_ADDRESS') ip_address,
          SYS_CONTEXT('USERENV','NETWORK_PROTOCOL') network_protocol,
          SYS_CONTEXT('USERENV','BG_JOB_ID') bg_job_id,
          SYS_CONTEXT('USERENV','FG_JOB_ID') fg_job_id,
          SYS_CONTEXT('USERENV','AUTHENTICATION_TYPE')
authentication_type,
          SYS_CONTEXT('USERENV','AUTHENTICATION_DATA')
authentication_data,
          SYS_CONTEXT('USERENV','CURRENT_SQL') current_sql,
          SYS_CONTEXT('USERENV','CLIENT_IDENTIFIER') client_identifier,
          SYS_CONTEXT('USERENV','GLOBAL_CONTEXT_MEMORY')
global_context_memory
   from dual;

Answer 8

机器名：
SQL> connect system/manager@bbb
Connected.
SQL> select machine from v$session;