创建数据存储表
create table audit_ddl (
opertime timestamp PRIMARY KEY,
ip varchar2(20),
hostname varchar2(30),
operation varchar2(30),
object_type varchar2(30),
object_name varchar2(30),
sql_stmt clob,
db_schema varchar2(30)
);

创建触发器
create or replace trigger trg_audit_ddl
after create or drop or truncate ON DATABASE
DECLARE
PRAGMA AUTONOMOUS_TRANSACTION;
n NUMBER;
stmt clob := NULL;
sql_text ora_name_list_t;
BEGIN
n := ora_sql_txt(sql_text);
FOR i IN 1 .. n LOOP
stmt := stmt || sql_text(i);
END LOOP;
INSERT INTO audit_ddl
(opertime, ip, hostname, operation, object_type, object_name, sql_stmt,db_schema)
VALUES
(systimestamp,
sys_context(‘userenv’, ‘ip_address’),
sys_context(‘userenv’, ‘terminal’),
ora_sysevent,
ora_dict_obj_type,
ora_dict_obj_name,
stmt,
user
);
COMMIT;
END;
/

查询审计信息
select * from audit_ddl;