SYS_CONTEXT函数的用法
这个函数在写一些触发器,函数的时候非常有用处。用法:SELECT sys_context('USERENV', '') FROM dual; [@more@]这个函数在写一些触发器,函数的时候非常有用处。用法:SELECT sys_context('USERENV', '') FROM dual; 第二个参数的可选值:AUTHENTICATION_DATA Data being used to authenticate the login user. For X.503 certificate authenticated sessions, this field returns the context of the certificate in HEX2 format. Note: You can change the return value of the AUTHENTICATION_DATA attribute using the length parame