捕获某表dml操作触发器：
CREATE OR REPLACE TRIGGER tr_capt_sql
BEFORE DELETE OR INSERT OR UPDATE
ON 表名
DECLARE
sql_text ora_name_list_t;
state_sql capt$sql.sql_text%TYPE;
BEGIN
FOR i IN 1..ora_sql_txt(sql_text) LOOP
state_sql := state_sql || sql_text(i);
END LOOP;
INSERT INTO capt$sql(login_user,capt_time,ip_address,audsid,owner,table_name,sql_text)
VALUES(ora_login_user,sysdate,sys_context('USERENV','IP_ADDRESS'),
userenv('SESSIONID'),'MANAGER','TEST',state_sql);
EXCEPTION
WHEN OTHERS THEN
dbms_output.put_line('Capture DML Exception:'||SQLERRM);
END tr_capt_sql;
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