1、 USERENV(OPTION)
返回當(dāng)前的會話信息.
OPTION='ISDBA'若當(dāng)前是DBA角色,則為TRUE,否則FALSE.
OPTION='LANGUAGE'返回數(shù)據(jù)庫的字符集.
OPTION='SESSIONID'為當(dāng)前會話標(biāo)識符.
OPTION='ENTRYID'返回可審計的會話標(biāo)識符.
OPTION='LANG'返回會話語言名稱的ISO簡記.
OPTION='INSTANCE'返回當(dāng)前的實(shí)例.
OPTION='terminal'返回當(dāng)前計算機(jī)名
SELECT USERENV('LANGUAGE') FROM DUAL;
2、sys_context
代碼如下:
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
3.與系統(tǒng)視圖v$session組合使用可以獲得更多信息(客戶端所使用的應(yīng)用程序等)
代碼如下:
select *
from v$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;