Hi, Thank you very much,but the trigger you offered still does not work,i can not capture the dml statment because I always get the exception,I think may this is because the value of ora_sql_txt(sql_text) is null which raise the exception? Any other suggestion?My envirment is Windows XP+ Oracle10.2 ----- Original Message ----- From: Jared Still To: xiaoyezi.xyz@xxxxxxx Cc: oracle-l@xxxxxxxxxxxxx Sent: Tuesday, August 01, 2006 11:51 PM Subject: Re: help about ora_sql_txt(sql_text) I'm not sure what you're attempting to do with that first loop, but both it and the state_sql variable are unneeded. Perhaps a perusal of the docs is in order? http://download-west.oracle.com/docs/cd/B10501_01/appdev.920/a96590/adg14evt.htm#1000872 This trigger works: CREATE OR REPLACE TRIGGER test AFTER insert ON t declare sql_text ora_name_list_t; BEGIN FOR i IN 1..ora_sql_txt(sql_text) LOOP INSERT INTO dml_trace(user_name,ipaddress,audit_time,schema_user,schema_object,ddl_sql) VALUES(sys_context('userenv','session_user'),sys_context('userenv','ip_address'),SYSDATE, ora_dict_obj_owner,ora_dict_obj_name,sql_text(i)); END LOOP; EXCEPTION WHEN OTHERS THEN RAISE_APPLICATION_ERROR(-20333,'There is exception!' ); end test; On 8/1/06, xiaoyan <xiaoyezi.xyz@xxxxxxx> wrote: How to get the sql text when a user executes a dml statment? I wrote a trigger like this:(a triiger on the table 'T' of schema 'TEST') CREATE OR REPLACE TRIGGER test AFTER insert ON test.t declare sql_text ora_name_list_t; state_sql dml_trace.ddl_sql%TYPE; BEGIN FOR i IN 1..ora_sql_txt(sql_text) LOOP state_sql := state_sql||sql_text(i); INSERT INTO t VALUES (i); END LOOP; INSERT INTO dml_trace(user_name,ipaddress,audit_time,schema_user,schema_object,ddl_sql) VALUES(sys_context('userenv','session_user'),sys_context('userenv','ip_address'),SYSDATE, ora_dict_obj_owner,ora_dict_obj_name,state_sql); EXCEPTION WHEN OTHERS THEN RAISE_APPLICATION_ERROR(-20333,'There is exception!' ); end test; but when a user executes a insert on test.t,there is a exception,and through a dbms_output.put_line('ora_sql_txt(sql_text)is'||ora_sql_txt(sql_text)) I found the value of ora_sql_txt(sql_text) is null,then how can I get a dml text? -- Jared Still Certifiable Oracle DBA and Part Time Perl Evangelist