Table auditing script in Oracle

Table Auditing :

CREATE TABLE delete_audit (

login_date DATE,

hostnm  VARCHAR2(30),

ipaddr  VARCHAR2(30),

module VARCHAR2(50),

client_info VARCHAR2(50),

os_user VARCHAR2(30),

terminal VARCHAR2(30));

CREATE OR REPLACE TRIGGER delete_audit

AFTER DELETE

ON .

BEGIN

    INSERT INTO delete_audit

    (login_date,  hostnm, ipaddr, module, client_info, os_user, terminal)

    VALUES

    (SYSDATE,

     SYS_CONTEXT('USERENV','HOST'),

     sys_context('USERENV','IP_ADDRESS'),

     sys_context('USERENV','module'),

     sys_context('USERENV','client_info'),

     sys_context('USERENV','os_user'),

     sys_context('USERENV','terminal')

     );

END delete_audit;

/