Help on creating update trigger(urgent)

Hii all,
I have a situation like this
I have 10 different tables like a,b,c,d,e,f
But i have same columns in all tables
like
updated_by,
updated_date
I need to create a procedure and call that procedure in update triggers for all tables
Can anybody help
In creating Procedure and trigger
Thanks

There is nothing wrong with the trigger, but the procedure is another story. You cannot do DML on the table that is firing the trigger inside the trigger, that is the mutating table error.
I am not really sure why you are doing the DML anyway. you have defined a BEFORE UPDATE trigger on k_constituent, and the procedure checks for the existence of a row in the same table where the currt_user_id field is the same as the id of the user making the update. Without knowing anything about the application, this implies one of two things to me. Either you are trying to make sure the row to be updated does exist, or, this is some kind of security check.
If it is the first, then it is unneccessary, since the before update trigger will only fire if the row to be updated exists viz.
SQL> CREATE OR REPLACE TRIGGER jt_bu
2 BEFORE UPDATE ON JTEST
3 FOR EACH ROW
4
5 BEGIN
6     :new.updby := USER;
7     :new.updon := SYSDATE;
8     DBMS_OUTPUT.Put_Line('Trigger fired ok');
9 END;
10 /
Trigger created.
SQL> SELECT * FROM jtest;
        ID DESCR      UPDBY                     UPDON
         1 YES        OPS$ORACLE                24-APR-03
         2 NEWDES     OPS$ORACLE                23-APR-03
         3 ORACLE     OPS$ORACLE                23-APR-03
SQL> UPDATE jtest SET descr = 'NO' WHERE id = 1;
Trigger fired ok
1 row updated.
SQL> UPDATE jtest SET descr = 'NO' WHERE id = 5;
0 rows updated.If you are doing this for security, then you are way too late. The user should not be in the database doing updates if they are not a valid user (whatever valid user means to you).
As a side note, you do realize that if there is more than one record in k_constituent with currt_user_id = updating user, then the procedure will not set update_date and update_by?
TTFN
John

Similar Messages

Help with create a trigger

hello all
i have a 4 tables and i would like to create a trigger in a tables
CREATE TABLE CLIENT_INFO
( CLIENT_NO     VARCHAR2(10) CONSTRAINT CLIENT_INFO_CNO_PK PRIMARY KEY,
CLIENT_NAME   VARCHAR2(50) NOT NULL,
ORDERS_AMOUNT NUMBER(7)
CREATE TABLE STOCK_INFO
( ITEM_NO              VARCHAR2(10) ,
ITEM_DESCRIPTION     VARCHAR2(100),
SELLING_PRICE        NUMBER(6),
QTY_IN_HAND          NUMBER(6)    NOT NULL,
CONSTRAINT ITEM_NUM_SPRICE_PK PRIMARY KEY (ITEM_NO , SELLING_PRICE)
CREATE TABLE ORDER_INFO
( ORDER_NO     VARCHAR2(10) CONSTRAINT ORDER_INFO_ONO_PK PRIMARY KEY,
CLIENT_NO    VARCHAR2(10),
ORDER_DATE   DATE,
ORDER_AMOUNT NUMBER(6),
CONSTRAINT ORDER_INFO_CNO_FK FOREIGN KEY (CLIENT_NO) REFERENCES CLIENT_INFO (CLIENT_NO)
CREATE TABLE ORDER_LINES
( ORDER_NO       VARCHAR2(10),
ITEM_NO        VARCHAR2(10),
LINE_QTY       NUMBER(6),
SELLING_PRICE NUMBER(6),
TOTAL_PRICE    NUMBER(6)
ALTER TABLE ORDER_LINES
ADD CONSTRAINT ORDER_LINES_ONO_FK FOREIGN KEY (ORDER_NO) REFERENCES ORDER_INFO (ORDER_NO);
ALTER TABLE ORDER_LINES
ADD CONSTRAINT ORDER_LINES_INO_FK FOREIGN KEY (ITEM_NO) REFERENCES STOCK_INFO (ITEM_NO);i would like to create this trigger
1-order_amount in table 3 due to any (insert,update or delete ) in total_price in table 4
2-orders_amount in table 1 due to any (insert,update or delete ) in order_amount in table 3
i would like to ask another quotations r this relations in good for tables
thank's all

>
plz i need a help to create a trigger
>
Using a trigger won't solve your problem. You are trying to use child table triggers to maintain parent table information.
There is no transaction control to ensure that the parent table will be updated with the correct information.
One process could update child record 1 while another process is updating child record two. Each process will see a different total if they try to compute the sum of all child records since the first process will see the 'old' value for the child record that the second process is updating and the second process will the 'old' value for the child record that the first process is updating.
So the last process to commit could store the wrong total in the parent record withoug an exception ever being raised.
See Conflicting Writes in Read Committed Transactions in the Database Concepts doc
http://docs.oracle.com/cd/E14072_01/server.112/e10713/consist.htm
>
some one ask me this quotation in interview
and im told him i can't understand this structure for database he said just do it
>
And I would tell them that using a trigger is not the right way to accomplish that since it could invalidate the data concurrency and data consistency of the tables.
Sometimes you just have to tell people NO.

Need Help in creating this trigger

I need your help to create this trigger. I need to set the default fl in this table depending on various conditions:
If there is only one indvl with end date as null then set the default_pk column for that indvl as 'Y'
ELSE
If there are multiple indvl_pks in this table with NULL end date then set the default_fl column to 'Y' for the indvl_pk with the earliest start date .
ELSE if there are multiple indvls with same start date then set the dflt_fl to 'Y' with the minimum br_pk
I am unable to get this to work due to the mutating trigger problem.
For example in this one rows with emplt_pk with 1001 and 1003 will be set to 'Y'.
create table emplt
emplt_pk number,
indvl_pk number,
start_dt date,
end_dt date,
lct_fl char(1),
sup_fl char(1),
br_pk number,
nro_pk number,
default_fl
char(1) default 'N' );
INSERT
INTO emplt
values(1001, 101, to_date ('01-01-2005', 'MM-DD-YYYY' ), NULL, 'Y','N' ,123,NULL,NULL );
INSERT INTO emplt values(
1002, 101, to_date ('02-01-2005', 'MM-DD-YYYY' ), NULL, 'Y','N' ,NULL,0001,NULL );
INSERT INTO emplt values(
1003, 102, to_date ('02-01-2005', 'MM-DD-YYYY' ), NULL, 'Y','N' ,NULL,0001,NULL );
Thanks in advance

the Easy Tabs could be useful for your requirement
http://usermanagedsolutions.com/SharePoint-User-Toolkit/Pages/Easy-Tabs-v5.aspx
/blog
twttr @esjord

Basic help needed creating a trigger

I'm completely new to SQL programming altogether, and I'm trying to set up a trigger that will make some checks before adding a new row to a given table. I am trying to do this because I need to enforce a CONSTRAINT that checks whether the dates entered for 'deadline' and 'startDate' are greater than sysdate and less than (sysdate + 365), and I found out that you cannot reference sysdate from a CONSTRAINT. Therefore I am now attempting to do this using a trigger, but I don't really know how to do this. Here is the sql code used to create the table:
-- PLACEMENT TABLE
DROP TABLE placement;
CREATE TABLE placement
contactId Int,
placementId Int,
position VARCHAR(60),
description CLOB,
lengMonths Int,
salary Number(7,2),
deadline DATE,
startDate DATE,
addrLine1 VARCHAR(120),
postCd VARCHAR(10)
And here is my attempt at creating the trigger that will only allow the deadline and startDate to be entered if they satisfy the following check: (sysdate < deadline/startDate <= sysdate+365)
CREATE OR REPLACE TRIGGER trg_deadline_low BEFORE INSERT OR UPDATE OF deadline ON placement
BEGIN
IF :deadline <= SYSDATE THEN
ROLLBACK;
END IF;
END;
CREATE OR REPLACE TRIGGER trg_deadline_high BEFORE INSERT OR UPDATE OF deadline ON placement
BEGIN
IF :deadline > SYSDATE + 365 THEN
ROLLBACK;
END IF;
END;
If possible, I would like for these triggers to display an error rather than just using ROLLBACK, but I'm not sure how! At the moment, these triggers do not work at all; I get an error message "Warning: Trigger created with compilation errors." when I attempt to create the triggers in the first place.
Can anyone tell me why I am seeing this error when trying to implement the triggers? And if anyone could also improve on my amateur attempt at coding a trigger, then that would be great! Thanks for any help!

Oops!
Nicolas, Thank you for correcting my mistake.
SQL> edit
Wrote file afiedt.buf
1 CREATE TABLE placement
2 (
3 contactId Int,
4 placementId Int,
5 position VARCHAR(60),
6 description CLOB,
7 lengMonths Int,
8 salary Number(7,2),
9 deadline DATE check (deadline between sysdate and sysdate+365),
10 startDate DATE,
11 addrLine1 VARCHAR(120),
12 postCd VARCHAR(10)
13* )
SQL> /
deadline DATE check (deadline between sysdate and sysdate+365),
ERROR at line 9:
ORA-02436: date or system variable wrongly specified in CHECK constraint
SQL> edit
Wrote file afiedt.buf
1 CREATE TABLE placement
2 (
3 contactId Int,
4 placementId Int,
5 position VARCHAR(60),
6 description CLOB,
7 lengMonths Int,
8 salary Number(7,2),
9 deadline DATE check (deadline between to_date('2007-03-21','yyyy-mm-dd') and to_date('2008-03-21','yyyy-mm-dd')
10 startDate DATE,
11 addrLine1 VARCHAR(120),
12 postCd VARCHAR(10)
13* )
SQL> /
Table created.
On the contrary, I think that OP want an error instead of rollback : "I would like for these triggers to display an error rather than just using ROLLBACK"Ah, I had misread additionally. Sorry.

Creating Update Trigger

Hello,
I am pretty sure the problem here is ignorance. I am trying to create a trigger that will put the sysdate in a column called MODIFIED anytime the row is updated.
create or replace trigger "INSP_ER_KEY_MOD"
AFTER
update on "INSP_ER_KEY"
begin
update INSP_ER_KEY set MODIFIED = sysdate;
end;Thank you,
Adam

Hello
What is missing from the code Tony posted is the 'co-relation' name for the column to be updated. By default this is ':new' for the new value of the column.
http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14251/adfns_triggers.htm#sthref1228
CREATE OR REPLACE TRIGGER INSP_ER_KEY_MOD
BEFORE UPDATE
ON INSP_ER_KEY
FOR EACH ROW
BEGIN
-- Update updated_date field to current system date
:new.Modified := sysdate; --- changed
END;varad

Help With creating a trigger

Hello All!
I am writing regarding a trigger I must create. I have a table that has roughly 10 columns. I must insert rows into a 'history' table when any column in the parent table is updated or, of course if there is an insert on the parent table. Is there a way to specify multiple columns in the triggering statement (i.e., UPDATE OF parts_on_hand ON inventory) to insert rows into the child table if any of the columns is updated? I am very new with triggers, and am hoping that someone might be able to offer any suggestions, or maybe sample code if available just to help start me out.
Thanks in advance!
Julie

If you do not include a specific column(s), then the trigger will fire on an update to any column. So, for your case:
create or replace trigger t_trigger
before insert or update on t
for each row
begin
insert into t_history values (:new.c1, :new.c2, ...);
end;
/

Help on Procedure and trigger for updating(urgent please)

SQL> / Table A
CTUT_ID CTUT_COMPANY_NAME CURRT_USER_ID FMIS_ID CREATE_DA UPDATE_BY UPDATE_DATE
1234 A 15-APR-03
2222 B 15-APR-03
3333 C 15-APR-03
4444 D 15-APR-03
5555 E 15-APR-03
6666 F 15-APR-03
150282 G oRACLE 23-APR-03
1 H 15-APR-03
2 I 15-APR-03
3 J 15-APR-03
150343 K TIGER 24-APR-03
150305 L EXAMPLE 23-APR-03
150342 M SCOTT 24-APR-03
sQL >/ Table B
Empno     Empname UPDATE_BY UPDATE_DATE
1 AA
2 BB
3 CC
4 DD
What i need to do is i need to create an update trigger on both tables
like create a procedure
1)In procedure i need to check like
IF TABLEA.CURRT_USER_ID = (SELECT USER FROM DUAL)
THEN
UPDATE_BY = (CURRENT_USER_ID of CTUT_ID)
FOR EXAMPLE CURRENT USER_ID IS SCOTT THEN
UPDATE_BY = 150342
UPDATE_DATE = SYSDATE
ELSIF
UPDATE_BY <=> (CURRENT_USER_ID of CTUT_ID)
THEN
MESSAGE('USER IS NOT IN TABLE);
END IF;
and call that procedure in the update triggers
FOR BOTH TABLES TABLEA,TABLEB
i CREATED A PROCEDURE BUT IT IS NOT WORKING
ANY HELP PLEASE
CREATE OR REPLACE PROCEDURE UPDATE(
UPDATE_DATE out DATE,
UPDATE_BY out VARCHAR2)
IS
Uuser varchar2(20);
Udate date;
Ufound number(1);
BEGIN
SELECT USER,SYSDATE
INTO Uuser,Udate from dual;
SELECT count(*),CTUT_ID into Ufound,Uctut_id
FROM TABLEA
WHERE CURRT_USER_ID = Uuser
Group by Ctut_id;
IF (UFOUND = 1) THEN
UPDATE_DATE := UDATE;
UPDATE_BY := UCTUT_ID;
END IF;
EXCEPTION WHEN NO_DATA_FOUND THEN
RAISE_APPLICATION_ERROR(-20001,'User Does not Exist');
END UPD_CONSTITUENT;
CREATE A TRIGGER :
CREATE OR REPLACE TRIGGER TU
BEFORE INSERT ON TABLEA
FOR EACH ROW
BEGIN
UPDATE(:NEW.update_date,
     :NEW.update_BY);
END IF;
END;
SQL> update TABLEA
2 set CTUT_COMPANY_NAME = 'SCOTT TEST'
3 WHERE FMIS_USER_ID = 'N';
update TABLEA
ERROR at line 1:
ORA-04091: table TABLEA is mutating, trigger/function may not see it
ORA-06512: at "UPDATE", line 12
ORA-06512: at "TU", line 1
ORA-04088: error during execution of trigger 'TU'

Hi Mara,
You are right thats what i want
I have a table A
EmpNo Empname Currtuser_id Update_date Updateby
1 Denis Oracle
2 Scott Scott
3 Mara MMara
1)what i need to do is when any user tries to update the table Table A
Then the Trigger or procedure should check whether user is exits in table A in column currtuser_id
If his user id exits in table A
Then allow him to update the TABLE A
and insert his EMPNO in UPDATE_BY
and SYSDATE in UPDATE_BY
He will do all this process using forms
But i need to have trigger or procedure in database level for table
2) I have another table like 10 tables
Suppose TABLE B
When user tries to update TABLE B
Then the Trigger or procedure should check whether user is exits in table A in column currtuser_id
If his user id exits in table A
Then allow him to update the TABLE B
and insert his EMPNO in UPDATE_BY
and SYSDATE in UPDATE_BY
3) I need to have a common Procedure and call that procedure in all tables in UPDATE TRIGGER
Thanks for your help
Thanks

Help me in creating a Trigger for Insert and Update Options

Hi
Please help me in creating a Trigger .
My requirement is that after insert or update on a Table , i want to fire an event .
I have started this way ,but doesn't know how to fully implement this .
say i have a dept table
CREATE TRIGGER DepartmentTrigger
AFTER INSERT ON Dept
BEGIN
INSERT INTO mytable VALUES("123","Kiran");
END DepartmentTrigger;
Please tell me how can i put the Update option also .
Thanks in advance .

Please tell me how can i put the Update option also .Add "Or Update". ;-)
Here are a few suggestions, but you definitely need to refer to the manual page that the previous poster suggested.
CREATE OR REPLACE TRIGGER DepartmentTrigger
AFTER INSERT Or Update ON Dept
BEGIN
INSERT INTO mytable VALUES(:new.Dept,'DEPT ADDED OR CHANGED');
END DepartmentTrigger;
The "Or Replace" means you can replace the trigger while you're developing without having to type in a drop statement every time. Just change and rerun your script, over and over until you get it right.
Adding "Or Update" or "Or Delete" makes the trigger fire for those events too. Note, you may want seperate triggers in different scripts and with different names for each event. You have to decide if your design really does the same thing whether it's an insert or an update.
:new.Dept is how you would refer to the changed vale of the Dept column (:old.Dept is the prior value). I changed the double quotes on the string in the VALUES clause to single quotes.
Andy

Need help in writin a trigger---Very Urgent

Help me in creating the trigger with below specifications.
"We want to reject record deletions where DATE_APPROVED_PROV is not null or NLA_PROV_DONE is not null
We want to reject updates where (DATE_APPROVED_PROV is not null or NLA_PROV_DONE is not null)
and
(any of CAPEX or RFS or ALLOCATIONS or DEPR_START_DATE is different before update than it would be after update)"
Defination of Table is below :
CREATE TABLE ir_data
(record_id NUMBER(12,0) NOT NULL,
request_title VARCHAR2(255),
cio VARCHAR2(30),
host_country VARCHAR2(20),
ben_project_name VARCHAR2(255),
application VARCHAR2(80),
req_summary VARCHAR2(500),
external_ref VARCHAR2(255),
submitted_by VARCHAR2(60),
approved_by_prov VARCHAR2(60),
date_approved_prov DATE,
approved_by_final VARCHAR2(60),
date_approved_final DATE,
nla_prov_done DATE,
nla_final_done DATE,
cost_alloc_method VARCHAR2(255),
capex NUMBER(12,0) DEFAULT 0,
allocations NUMBER(12,0) DEFAULT 0,
rfs NUMBER(12,0) DEFAULT 0,
ben_budget_id VARCHAR2(20),
delete_flag VARCHAR2(1),
amortisation NUMBER(12,0) DEFAULT 0
depr_start_date DATE,
fy_allocations NUMBER(12,0),
wusys VARCHAR2(1))

Help me in creating the trigger with below
specifications.
"We want to reject record deletions where
DATE_APPROVED_PROV is not null or NLA_PROV_DONE is
not null
We want to reject updates where (DATE_APPROVED_PROV
is not null or NLA_PROV_DONE is not null)
and
(any of CAPEX or RFS or ALLOCATIONS or
DEPR_START_DATE is different before update than it
would be after update)"
Defination of Table is below :
CREATE TABLE ir_data
(record_id NUMBER(12,0) NOT
NULL,
request_title VARCHAR2(255),
cio VARCHAR2(30),
host_country VARCHAR2(20),
ben_project_name VARCHAR2(255),
application VARCHAR2(80),
req_summary VARCHAR2(500),
external_ref VARCHAR2(255),
submitted_by VARCHAR2(60),
approved_by_prov VARCHAR2(60),
date_approved_prov DATE,
approved_by_final VARCHAR2(60),
date_approved_final DATE,
nla_prov_done DATE,
nla_final_done DATE,
cost_alloc_method VARCHAR2(255),
capex NUMBER(12,0) DEFAULT
0,
allocations NUMBER(12,0)
DEFAULT 0,
rfs NUMBER(12,0)
DEFAULT 0,
ben_budget_id VARCHAR2(20),
delete_flag VARCHAR2(1),
amortisation NUMBER(12,0)
DEFAULT 0
depr_start_date DATE,
fy_allocations NUMBER(12,0),
wusys VARCHAR2(1))(any of CAPEX or RFS or ALLOCATIONS or DEPR_START_DATE is different before update than it would be after update)
I think if any of these change during an update do something. Not sure what. Probably reject, because that is what the other 2 requirements are.
Is this for an homework assignment?
Jim P.

Need help with create trigger based on more then 1 table and join.

Hello,
Here i have 3 tables
1. Employee
PERSON_ID
1
1
N
NUMBER
None
ORG_ID
2
N
NUMBER
Frequency
LOC_ID
3
N
NUMBER
Frequency
JOB_ID
4
Y
NUMBER
Height Balanced
FLSA_STATUS_ID
5
Y
NUMBER
Frequency
FULL_NAME
6
N
VARCHAR2 (250 Byte)
Height Balanced
FIRST_NAME
7
N
VARCHAR2 (20 Byte)
Height Balanced
MIDDLE_NAME
8
Y
VARCHAR2 (60 Byte)
Height Balanced
LAST_NAME
9
N
VARCHAR2 (40 Byte)
Height Balanced
PREFERRED_NAME
10
Y
VARCHAR2 (80 Byte)
None
EMAIL
11
Y
VARCHAR2 (250 Byte)
None
MAILSTOP
12
Y
VARCHAR2 (100 Byte)
None
HIRE_DATE
13
N
DATE
None
2. ems_candidate
EMS_CANDIDATE_ID
1
1
N
NUMBER
None
EMS_JOB_ID
2
Y
NUMBER
Frequency
NAME
3
N
VARCHAR2 (255 Byte)
Frequency
EMAIL
4
Y
VARCHAR2 (255 Byte)
None
TELEPHONE
5
Y
VARCHAR2 (25 Byte)
None
EMS_SOURCE_ID
6
Y
NUMBER
Frequency
RECEIVED_DATE
7
Y
DATE
Frequency
COMMENTS
8
Y
VARCHAR2 (4000 Byte)
None
3. employee_resources
EMP_RES_ID
1
1
N
NUMBER
None
PERSON_ID
2
Y
NUMBER
Height Balanced
CANDIDATE_ID
3
Y
NUMBER
Frequency
EMP_START_DATE
4
Y
DATE
None
CUSTOM_RESOURCE_FLAG
5
Y
NUMBER (1)
None
RESOURCE_GROUP_ID
6
N
NUMBER
Frequency
RESOURCE_STATUS_ID
7
N
NUMBER
Frequency
GROUP_LOC_ID
8
N
NUMBER
Height Balanced
ASSIGNED_JIRA
9
Y
VARCHAR2 (250 Byte)
None
REVOKED_JIRA
10
Y
VARCHAR2 (250 Byte)
None
CREATED_DATE
11
Y
DATE
SYSDATE
None
UPDATED_DATE
12
Y
DATE
None
Now i want to create trigger when new record get inserted in employee table wanted to update person_id in employee_resources table.
So i want to match ems_candidate.name with employee.full_name , ems_candidate.ems_job_id with employee.ems_job_id. And if it matched then update person_id in employee_resources table else through an exception and insert record in temp table.
If anybody has an idea can u please help me.
Thanks,
Gayatri.

I created below trigger
CREATE TRIGGER emp_resources_upd_person_id
AFTER INSERT ON ems.employee
FOR EACH ROW
BEGIN
    UPDATE ems.employee_resources
       SET person_id = :new.person_id
     WHERE candidate_id = (SELECT ems_candidate_id
                             FROM ems.ems_candidate cand, ems.employee emp
                            WHERE TRIM(UPPER(emp.first_name)) = TRIM(UPPER(SUBSTR (cand.name, 1, INSTR (cand.name, ' ') - 1)))
                              AND TRIM(UPPER(emp.last_name)) = TRIM(UPPER(SUBSTR (cand.name,INSTR (cand.name, ' ') + 1,DECODE (INSTR (SUBSTR (cand.name, INSTR (cand.name, ' ') + 1), ' '),0,LENGTH (cand.name),(INSTR (SUBSTR (cand.name, INSTR (cand.name, ' ') + 1), ' ') - 1)))))
                              AND emp.person_id = :new.person_id);
EXCEPTION
WHEN OTHERS THEN
    INSERT INTO ems.update_person_id_exception(person_id,first_name,last_name,full_name) VALUES(:new.person_id,:new.first_name,:new.last_name,:new.full_name);
END;
Now when i am trying to insert row in ems.employee table it gives me an error
ORA-04091
table string.string is mutating, trigger/function may not see it
Cause: A trigger (or a user defined plsql function that is referenced in this statement) attempted to look at (or modify) a table that was in the middle of being modified by the statement which fired it.
Action: Rewrite the trigger (or function) so it does not read that table.
Can anybody please help me to come out from these error.
Thanks,
Gayatri.

How to create conditional update trigger in sql server

How to create conditional update trigger in sql server

You cant create a conditional update trigger. Once you create an update trigger it will get called for every update action. However you could write logic inside it to make it do your activity based on your condition using IF condition statement
Say for example if you've table with 6 columns and you want some logic to be implemented on update trigger only if col3 and col5 are participating in update operation you can write trigger like this
CREATE TRIGGER Trg_TableName_Upd
ON TableName
FOR UPDATE
AS
BEGIN
IF UPDATE(Col3) OR UPDATE (Col5)
BEGIN
....your actual logic here
END
END
UPDATE() function will check if column was involved in update operation and returns a boolean result
Please Mark This As Answer if it helps to solve the issue Visakh ---------------------------- http://visakhm.blogspot.com/ https://www.facebook.com/VmBlogs

Learning Pl/SQL here: Help creating a trigger

Hello everyone.
I am just learning PL/SQL here and have tasked with creating at trigger. The trigger basically needs to fire off a email when any records are updated on a specific table.
So far, I was going to use the built in procedure utl_smtp. I have that part configured, but where I am struggly is how to tell the trigger work when the table is updated with new data.
I am a little lost here so any help is greatly appreciated.
Thanks,
JW

Hello! I have following code for a trigger that fires when some record inserted in the table. However I got following error. Like this for example "ERROR at line 38: PL/SQL: Statement ignored". What is wrong whith the code?
CREATE OR REPLACE TRIGGER "SPEAKERS_T2"
AFTER
insert on "SPEAKERS"
for each row
declare
sender varchar2(80) := '[email protected]';
recipient varchar2(80) := '[email protected]';
smtpHost varchar2(80) := 'smtp.hotmail.com';
smtpUser varchar2(256) := 'someusername';
smtpPassword varchar2(256) := '<password>';
mail_conn utl_smtp.connection;
separator varchar2(1) := ' ';
content_charset varchar2(8) := 'utf8';
procedure send_header(name in varchar2, header in varchar2) as
begin
utl_smtp.write_raw_data(mail_conn, UTL_RAW.cast_to_raw(name||': '||header||utl_tcp.CRLF));
end;
begin
mail_conn := utl_smtp.open_connection(smtpHost, 25);
utl_smtp.helo(mail_conn, smtpHost);
-- If Authentication required for SMTP
-- After upgrade to Oracle 9i, replace demo_base64.encode
-- with the native utl_encode.base64_encode for better performance.
utl_smtp.command(mail_conn, 'AUTH LOGIN');
utl_smtp.command(
mail_conn, utl_raw.cast_to_varchar2(
utl_encode.base64_encode(utl_raw.cast_to_raw(smtpUser))
utl_smtp.command(
mail_conn, utl_raw.cast_to_varchar2(
utl_encode.base64_encode(utl_raw.cast_to_raw(smtpPassword))
utl_smtp.mail(mail_conn, sender);
utl_smtp.rcpt(mail_conn, recipient);
utl_smtp.open_data(mail_conn);
send_header('From', sender);
send_header('To', recipient);
send_header('CC', recipient);
send_header('Subject', 'Test');
send_header('MIME-Version', '1.0');
send_header('Content-Type', 'text/plain; charset="utf8"');
utl_smtp.write_raw_data(
mail_conn, utl_raw.cast_to_raw(utl_tcp.CRLF||' ')
utl_smtp.close_data(mail_conn);
utl_smtp.quit(mail_conn);
end;

Regarding before insert and update trigger...Urgent!!

i have written a trigger to trim N upper the 1st field and trim N upper N replace period(.) for second field2 for future records.
When i compile, it says "complied with errors" is gives error as "insuffecient privlages"
Can anyone please figure out what problem is this??? And is my code correct?? if any changes to be done please let me know????
create or replace trigger TRG_test
before insert or update on test
for each row
declare
begin
:new.field1 := trim(upper(:new.field1));
:new.field2 := trim(upper(replace(:new.field2,'.' )));
end;
Urgent please!!!
Thank you in advance.

The owner of the tables is User 2 and i am creating the trigger in user1 N i m calling this table from user2...as User2.TEST ...
User 1 as has previliges to acess the user 2 tables, since user2 tables are listed under user1 table section...
Do you system privilages????
I m using PL/SQL devloper tool....

ADF BC: Creating updatable VO based upon DB View with "instead of" trigger

Hello all,
I have got an interesting issue. I have an Oracle DB view that is used to hide some complexity in the underlying DB design (it does some unions). This view is updatable because we have created an "instead of" update trigger to update the correct table when a row is updated. This is working fine in SQL.
Next, we have created an ADF Entity object based upon the view, specifying an appropriate PK for the DB View. Then, we have created an updatable VO based upon the EO. All well and good so far. The issue we have is in trying to commit changes to the DB - because the ADF BC framework is trying to lock the row to update (using SELECT ... FOR UPDATE), it's not working because of ORA-02014 - cannot select FOR UPDATE from view with DISTINCT, GROUP BY, etc.
This leads me to thinking about overridding doSelect() on the EO as hinted here http://radio.weblogs.com/0118231/stories/2005/07/28/differenceBetweenViewObjectSelectAndEntityDoselectMethod.html
As a temporary test, we have over-ridden the EO's doSelect to call super.doSelect(false) and it does work, although we will have lost update issues as detailed in Steve's article.
My questions:
1). Is overriding doSelect() the correct thing here? Perhaps there is a better way of handling this problem? I do have a base EO class from which all of the EO's extend, so adding this behavior should be straightforward.
2). Does anyone have example doSelect implementation? I am thinking of overriding doSelect for my EO and calling super.doSelect (lock=false), but then I need to deal with some possible exceptions, no?
Kind regards,
John

Hi John,
I have exactly the same issue as you experienced back in January. I have a complex data modelling requirement which requires the need to pivot rows into columns using ROW_NUMBER() and PARTITION clauses. To hide the complexity from the middle tier, I have created a database view and appropriate INSTEAD OF triggers and mapped my EO to the view. I have overriden the lock() method on the EO implementation class (to avoid ORA-02014) and would like to try the same solution you used with the pl/sql call to lock the record.
My question is, how did you manage the release of the lock if the transaction was not rolled back or committed by your application i.e. if the user closed the browser for instance.
In my naivity, I would like to think that the BC4J framework would release any locks for the database session when it found the servlet session to be terminated however my concern is that the lock would persist and cause complications.
Any assistance greatly appreciated (if you would be willing to supply your lock() method and pl/sql procedure logic I would be even more grateful!).
Many thanks,
Dave
London

Help needed in creating a trigger

hi,
I am creating a Trigger which keep track of the updates of a particular table.
Whenver a col value is updated i want to insert a row into newtable, with colname,old value and new value.
How do we get to know which col value is changed in a table?
Thanks

I have seen the approach you propose (1 row for each column changed) and it is tedious and prone to maintenance headaches. You have to write code for each column, doing compares (remembering to consider NULLs), dealing with different datatypes, etc. You also have to decide how to record inserts and deletes.
An easier trigger-based solution is to create a history table for the table you want to track, with all of the columns from the original, plus whatever else you need for housekeeping. Write an After Insert/Update/Delete trigger on your base table, and populate/insert rows into the history table:
- For inserts, populate and insert row from the :new. values
- For deletes, populate and insert a row from the :old. values
- For updates, popualte and insert a row from the :old. values and another from the :new. values
I would also have a column to designate whether this is an Insert, Delete, Update-Old or Update-New row.
Once you have done one example, the rest are easy. If you were sufficiently motivated (I have not yet been), you could probably write a script to query DBA_TAB_COLS and generate the code.

Help on creating update trigger(urgent)

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