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Oracle中获取会话信息的两个函数分享

时间：2021-01-04 11:45 编辑：来源：阅读：
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摘要：Oracle中获取会话信息的两个函数分享

[b]1、 USERENV(OPTION) [/b]　　返回当前的会话信息. 　　OPTION='ISDBA'若当前是DBA角色,则为TRUE,否则FALSE. 　　OPTION='LANGUAGE'返回数据库的字符集. 　　OPTION='SESSIONID'为当前会话标识符. 　　OPTION='ENTRYID'返回可审计的会话标识符. 　　OPTION='LANG'返回会话语言名称的ISO简记. 　　OPTION='INSTANCE'返回当前的实例. OPTION='terminal'返回当前计算机名　　SELECT USERENV('LANGUAGE') FROM DUAL; [b]2、sys_context [/b]

[u]复制代码[/u] 代码如下:

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  

from dual

[b]3.与系统视图v$session组合使用可以获得更多信息(客户端所使用的应用程序等) [/b]

[u]复制代码[/u] 代码如下:

select *

  from v$session se,

       (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

          from dual) base

 where se.AUDSID = base.sessionid;

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