Host_Var VARCHAR2(200); /* 终端主机名 */
BEGIN
/* 获取登陆用户信息 */
SELECT SYS_CONTEXT('USERENV...','SESSIONID'),
SYS_CONTEXT('USERENV','OS_USER'),
SYS_CONTEXT('USERENV','IP_ADDRESS...'),
SYS_CONTEXT('USERENV','TERMINAL'),
SYS_CONTEXT('USERENV','HOST')
INTO...','SESSIONID'),
SYS_CONTEXT('USERENV','OS_USER'),
SYS_CONTEXT('USERENV','IP_ADDRESS...'),
SYS_CONTEXT('USERENV','TERMINAL'),
SYS_CONTEXT('USERENV','HOST')
INTO