Best approach to Update / Delete / Insert

Hi Guys
I was flicking through my HTML DB Oracle University course notes the other day and was reading about onSubmit processes that are carried out after page submission / computations and validations.
The example cited was for an insert statement using form items.
At the bottom there was a warning that this approach should not be used for Updates / Deletes. Why is this?
I have a custom built form that inserts into 3 tables so the out of the box functionality of HTML DB will not suffice. Instead i created an onSubmit processes that performs the inserts using many of the form items and a few sequences etc.
This works fine but I also have to do a similar form for updates across many tables based on the users input.
I was just curious why you should not use an onSubmit process to do updates / deletes? and any best practices that I should be adhering to.
Cheers for any help
Duncan

Hello Duncan,
I believe the warning is not about using what you call onSubmit processes, but how to use them in case of update and delete.
When you are inserting a new data into a table, you don't really need to care about what is going on with the other users of the application. This is not the case when you update or delete a record. Prior to doing that you must verify that other users do not rely on that record in their processes. If they are, you must deal with that. If you are using the built in Automatic DML process it's doing it for you. If you are coding it manually, you must do it yourself.
You should search for "lost update" or "optimistic lock" to learn more about this.
Regards,
Arie.

Similar Messages

What is the best approach to track deleted records

Dear all,
We have build a CMS platform which is based on SQL server 2012 tables structure hosted in Azure.
We have build on top of this some REST API method in order to access data from any type of client application.
The issues we need to solved now is what his the best way to track deleted records in order that client application gets informed through web service about deleted data from our CMS.
We were thinking of 2 path actually :
- having a kind of Ghost table for each of our real table where deleted records will be inserted into ( physical delete ). This would mean adding as many Ghost tables as we have production tables
- Adding a IsDeleted flag to each of our table which will be set to true when a record is deleted from our CMS ( logical delete ). This would means adding an IsDelete field to each of our tables, create and update all our store procedure and web services
in order to taken in account that new filter criteria to fetch our records. Quite huge job
Will there be any other approach ?
We are looking the best solution with minimum impact on our current solution
reagards
Your knowledge is enhanced by that of others.

Hello,
@Tom, based on your question
"The question would be what do you need to do with the deleted records and how long do you need to keep them?"
When records is deleted, then I simply want to delete them and informed any client application about deleted items in order to get data in Sync. I will not have any reporting on deleted data !
The only reason of tracking delete tables items, is simply to informed client application through web service sync about the data to be ignored. Client application have a caching database records for performance reason and is is require to not used data
from that local storage which has been reported as deleted by the SQL server on Aure.
Does this make sense ?
regards
Your knowledge is enhanced by that of others.

How can i display recent update/delete/insert records in form

Hai !!!!
i am new for forms,.......any body tell me, how can i display recent no of records updated or no of records deleted or no of records are inserted in a form. these records count are display in display items....give me detail explination......
Subbu.....

the easiest way is copy and paste the oracle-forms example from the OU.
You need form-level-trigger ON-ERROR + ON-MESSAGE, POST-INSERT, POST-UPDATE, POST-DELETE, three global variables and a procedure:
ON-ERROR
handle_message( error_code, 'ERROR: ' || ERROR_TYPE || '-' || TO_CHAR(ERROR_CODE) ||': '|| ERROR_TEXT );
ON-MESSAGE
handle_message( message_code, MESSAGE_TYPE || '-' || TO_CHAR(MESSAGE_CODE) || ': ' || MESSAGE_TEXT );
PROCEDURE handle_message( message_number IN NUMBER, message_line IN VARCHAR2 ) IS
BEGIN
    IF message_number IN ( 40400, 40406, 40407 )
    THEN
      DEFAULT_VALUE( '0', 'GLOBAL.insert' );
      DEFAULT_VALUE( '0', 'GLOBAL.update' );
      DEFAULT_VALUE( '0', 'GLOBAL.delete' );
      MESSAGE('Save Ok: ' ||
        :GLOBAL.insert || ' records inserted, ' ||
       :GLOBAL.update || ' records updated, ' ||
       :GLOBAL.delete || ' records deleted !!!' );
      ERASE('GLOBAL.insert');
      ERASE('GLOBAL.update');
      ERASE('GLOBAL.delete');
    ELSE
         MESSAGE(message_line );
          END IF;
END;
POST-INSERT
DEFAULT_VALUE('0', 'GLOBAL.insert');
:GLOBAL.insert := TO_CHAR( TO_NUMBER( :GLOBAL.insert ) + 1 );
POST-UPDATE
DEFAULT_VALUE('0', 'GLOBAL.update');
:GLOBAL.update := TO_CHAR( TO_NUMBER( :GLOBAL.update ) + 1 );
POST-DELETE
DEFAULT_VALUE('0', 'GLOBAL.delete');
:GLOBAL.delete := TO_CHAR( TO_NUMBER( :GLOBAL.delete ) + 1 );try it
Gerd

Number of Rows Updated/Deleted/Inserted

Hi
To audit what rows inserted , deleted and updated in a particular table i am using the below code . However is there a way i can just get the count of rows inserted , updated and deleted based on date or user . Also please tell me how can i get the terminal and machine name of the USER.
PACKAGE:
CREATE OR REPLACE package audit_pkg
as
procedure check_val( l_tname in varchar2,
l_cname in varchar2,
l_new in varchar2,
l_old in varchar2 , action in varchar2);
procedure check_val( l_tname in varchar2,
l_cname in varchar2,
l_new in date,
l_old in date , action in varchar2);
procedure check_val( l_tname in varchar2,
l_cname in varchar2,
l_new in number,
l_old in number , action in varchar2 );
end;
PACKAGE BODY
CREATE OR REPLACE package audit_pkg
as
procedure check_val( l_tname in varchar2,
l_cname in varchar2,
l_new in varchar2,
l_old in varchar2 , action in varchar2);
procedure check_val( l_tname in varchar2,
l_cname in varchar2,
l_new in date,
l_old in date , action in varchar2);
procedure check_val( l_tname in varchar2,
l_cname in varchar2,
l_new in number,
l_old in number , action in varchar2 );
end;
TRIGGER :
/* Formatted on 2010/03/21 01:04 (Formatter Plus v4.8.8) */
CREATE OR REPLACE TRIGGER trigger_emp_up
AFTER UPDATE
ON emp
FOR EACH ROW
BEGIN
audit_pkg.check_val ('EMP', 'EMPNO', :NEW.empno, :OLD.empno, 'UPDATE' );
audit_pkg.check_val ('EMP', 'ENAME', :NEW.ename, :OLD.ename, 'UPDATE');
audit_pkg.check_val ('EMP', 'JOB', :NEW.job, :OLD.job, 'UPDATE');
audit_pkg.check_val ('EMP', 'MGR', :NEW.mgr, :OLD.mgr, 'UPDATE');
audit_pkg.check_val ('EMP', 'HIREDATE', :NEW.hiredate, :OLD.hiredate, 'UPDATE');
audit_pkg.check_val ('EMP', 'SAL', :NEW.sal, :OLD.sal, 'UPDATE');
audit_pkg.check_val ('EMP', 'COMM', :NEW.comm, :OLD.comm, 'UPDATE');
audit_pkg.check_val ('EMP', 'DEPTNO', :NEW.deptno, :OLD.deptno, 'UPDATE');
END;
/* Formatted on 2010/03/21 01:04 (Formatter Plus v4.8.8) */
CREATE OR REPLACE TRIGGER trigger_emp_in
AFTER INSERT
ON EMP
FOR EACH ROW
BEGIN
audit_pkg.check_val ('EMP', 'EMPNO', :NEW.empno, :OLD.empno, 'INSERT');
audit_pkg.check_val ('EMP', 'ENAME', :NEW.ename, :OLD.ename, 'INSERT');
audit_pkg.check_val ('EMP', 'JOB', :NEW.job, :OLD.job, 'INSERT');
audit_pkg.check_val ('EMP', 'MGR', :NEW.mgr, :OLD.mgr, 'INSERT');
audit_pkg.check_val ('EMP', 'HIREDATE', :NEW.hiredate, :OLD.hiredate, 'INSERT');
audit_pkg.check_val ('EMP', 'SAL', :NEW.sal, :OLD.sal, 'INSERT');
audit_pkg.check_val ('EMP', 'COMM', :NEW.comm, :OLD.comm, 'INSERT');
audit_pkg.check_val ('EMP', 'DEPTNO', :NEW.deptno, :OLD.deptno, 'INSERT');
END;
/* Formatted on 2010/03/21 01:03 (Formatter Plus v4.8.8) */
CREATE OR REPLACE TRIGGER trigger_emp_de
AFTER DELETE
ON EMP
FOR EACH ROW
BEGIN
audit_pkg.check_val ('EMP', 'EMPNO', :NEW.empno, :OLD.empno, 'DELETE');
--audit_pkg.check_val ('EMP', 'ENAME', :NEW.ename, :OLD.ename);
--audit_pkg.check_val ('EMP', 'JOB', :NEW.job, :OLD.job);
--audit_pkg.check_val ('EMP', 'MGR', :NEW.mgr, :OLD.mgr);
--audit_pkg.check_val ('EMP', 'HIREDATE', :NEW.hiredate, :OLD.hiredate);
--audit_pkg.check_val ('EMP', 'SAL', :NEW.sal, :OLD.sal);
--audit_pkg.check_val ('EMP', 'COMM', :NEW.comm, :OLD.comm);
--audit_pkg.check_val ('EMP', 'DEPTNO', :NEW.deptno, :OLD.deptno);
END;
Thanks

Hi
I'm not sure but i don't see that you are "auditing" time of the change and user to. You should expand your audit table ( and package )
with time and user atribut .
User , terminal , machine and much other things you can retrieve with sys_context function. For time you can use systimestamp function for example ..
http://www.psoug.org/reference/sys_context.html ( quite good reference )
For auditing things like machine you should be careful , if you are accesing your app through some http server you wil get the machine on which the server runs
and not the "client machine" from which the client has access the application throug that server .
T

Multi-Row insert/update/delete not working via db-link

App. Version: 2.0.0.00.49
DB: Oracle 9i, not sure about the build
Problem: Multirow Update/Insert/Delete doesn't work via db-link.
Error received: ....ORA-1460: unimplemented or unreasonable conversion requested....
Where: Tabular Form generated via Wizard
Side note: It's working properly when local table(s) is/are used, it's not working via db-link or view.
I've encountered this error with single update/insert/delete operations before, but was able to fix it via using temp-variables (v_xyz := :Px_xyz; as the proposed v('Px_xyz') was really slow with my scripts)...but with the automated DML-action I don't see a way to edit it accordingly.
Workaround found:
1a) Use local* collection on HTML-DB-Server, then write single row updates/deletes/inserts to the remote DB via DB-Link
1b) Use local* table on HTML-DB-Server, then write single row updates/deletes/inserts to the remote DB via DB-Link
* Local = on the same server that HTML-DB is running on...
So,...to my questions:
1. Can someone confirm that this is a "known feature" (aka bug)?
2. Can someone tell me if this "known feature" has been eliminated in the newer version of HTML-DB/APEX (> 2.0.0.00.49)?
Thanks.
Ingo

Hi,
Do you have a small test case program that demonstrates this? A JDeveloper project showing what exactly is the problem when trying to use the BDB SQL JDBC driver to insert data into the BDB SQL database? What do you mean by "not working", do you get any errors, you do not get errors but you do not see the data in the database etc?
What are the versions of Java, JDeveloper, ADF and BDB SQL you are using, and on what OS?
Regards,
Andrei

Scenario: Insert update delete into a 3 billion target from a 2 billion source

Both target(3 billion rows) and source (2 billion rows) are SQL server tables partitioned by "Year-month". Now I want Insert update delete from source to target. This is just a scenario that I was thinking about. I was thinking about the best approach
for the load.
With my little knowledge I would write a stored procedure with Merge statement but given the large amount of data will that be the best solution?
Please advise. Thanks in advance for your help.
svk

You need to find out how much data from what dates you need to operate on.
Is it a data sync endeavor?
A few tips: forget about the Lookup, too slow, and the Cache Transform will be a burden.
I would go with the T-SQL MERGE, but may want to do it in chunks, e.g. limit to date ranges.
Arthur My Blog

Stats on Inserts/Updates/Deletes

What's the best way to figure out how many insert/update/delete transactions my 10g Grid is processing over a given period (e.g. an hour) of time?
I want to come up with an automated procedure for collecting these stats (and possibly logging them
to a file).
I have Grid Control running, but in poking around under 'Performance' I don't see any metrics like this.

http://hostname:port/em
(Check $ORACLE_HOME/install/portlist.ini for the port of
Enterprise Manager Console HTTP Port (xadv2) = <port number>)
OEM Database Control:
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View Data:
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Does anyone know of a way to insert/update/delete an Invoice Line item (Non-PO Accounting Invoice - Transaction FB60 or FV60) using a BAPI or Function Module (or set of function modules) using ABAP? I have been trying to find some code to accomplish this and am stuck on a couple of issues.
I have found PRELIMINARY_POSTING_FB01 and PP_CHANGE_DOCUMENT_ENJ but both seem to submit the details to background processes. This is an issue because it gives the user a success message after execution but later delivers the error to Workflow. This is for an interfacing program so the results should be as real time as possible.
Has anyone accomplished this via FM or BAPI and if so would you mind sharing your experiences?
Thank you very much,
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SG- Thank you for the reply.
I have been playing with BAPI_INCOMINGINVOICE_PARK and I'm not sure if it is doing exactly what we want, but it is something that I have considered in the past. I plan on looking into BAPI_ACC_INVOICE_RECEIPT_POST this morning, hopefully that will provide some more for us.
If possible I'd like to avoid BDC sessions because this program could hypothetically interface with multiple SAP systems with different configurations.
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How to find out who made inserts/updates/deletes made to a SQL Table

I want to know WHO MAKES INSERTS/UPDATES/DELETES TO a particular SQL Table. Bascially I want to AUDIT ANY Edites made to a SQL 2008 TABLE. I need info such as WHO AMDE THE Updates i.e. the user first/lastname, When update was made, what row was updated etc...How
can I do that with SQL 2008?

One way to achieve that would be to use triggers to detect when a change is made to the table, and then insert a record into another table/database detailing what changed and who by.
You'd need three triggers, one for insert, update and delete respectively, and for each of those you use the "inserted" and "deleted" tables (system tables maintained by SQL) to retrieve what has been done. To retrieve who made the change you can query IDENT_CURRENT
which returns the last identity value for a specific table.
See :
Triggers -
http://msdn.microsoft.com/en-gb/library/ms189799(v=sql.100).aspx
Inserted & deleted tables -
http://technet.microsoft.com/en-us/library/ms191300(v=sql.100).aspx
INDENT_CURRENT -
http://technet.microsoft.com/en-us/library/ms175098(v=sql.100).aspx
There may be better / more up to date ways to do this, but I've used this method successfully in the past, albeit a long time ago (on a SQL 2000 box I think!).

I want a user to only be able to update/delete the rows they inserted

hi guys,
I have a table 2 users are inserting into. They can also update/delete the rows in the table. However, I do not want them to be able to update/delete the others users row. I only want them to have update/delete at the row level.
how can this be achieved?
thanks

Another idea if you really have just two (or a fixed set of N) users.
Does your table have a generic primary key (PK)?
You could use two (N) sequences having two (N) distinct sets of numbers as e.g user a is using sequences less than 1000000000, the other one values larger or equal to 1000000000.
create sequence <user_a>.pk_seq start with 0;
create sequence <user_b>.pk_seq start with 1000000000;An insert trigger uses <user_a>.pk_seq or <user_b>.pk_seq for generating the PK depending upon the current user for new records.
An update trigger allows updates only, if the PK of the record to be updated is in the range of sequences belonging to the current user.

How to display the result of excutions(insert/update/delete rows)

Hello.
Does anyone know how to display the result of scenario executions just like a scenario executions tab of package (insert/update/delete rows) in other screen (in the intergated operating platform for operators using http)
In additional, I also like to show the hierarchy of scenario in the same view.
So, I need the query using the information of the ODI repository.
If it is possible, I also like to have the decription of the tables in the ODI repository.
Can anyone tell me how can I get the information of the counts of excution?
Thanks in advance.

Hi,
You can get that information from the API getPrevStepLog. Does it work for you?
Download the last API reference manual from:
http://www.oracle.com/technology/products/oracle-data-integrator/10.1.3/htdocs/1013_support.html#docs

Using Case statement to insert,update,delete the tables

Hi All,
I have to check the databse ,
if it is developement then
insert/update/delete values in tables;
if it staging then
insert/update/delete values in tables;
if it is production then
insert/update/delete values in tables;
thers is function available to check the current database
For doing the about i am trying to write CASE statement like this
SELECT function,
case
when fun = 'developement' then insert into table1 values ('abcd','1234')
when fun = 'staging' then insert into table1 values ('abcd','1234')
when fun= 'production' then insert into table1 values ('abcd','1234')
else null
from dual
its throughing me an error
please help
Thanks,

Hi,
You can use CASE staement any place where an expression is expected.
For example, in:
UPDATE table_a
SET     col1 = exp1
,       col2 = exp2
WHERE   exp3 = exp4;all the expressions are labled lke expn.
Note that table_a, col1 and col2 are not expressions: you must hard-code these names, or use dynamic SQL.
So it's okay to say:
UPDATE table_a
SET     col1 = CASE
                   WHEN db = 'development' THEN 0
                   WHEN db = 'staging'      THEN 1
               END
,       col2 = CASE
                   WHEN db = 'development' THEN NULL
                   WHEN db = 'staging'      THEN col2
               END
WHERE   db != 'production';In this example:
in the development database, col1 is set to 0 and col2 is set to NULL
in the staging database, col1 is set to 1 and col2 is unchanged (that is, set to what it already was)
in the production database, nothing is changed (the WHERE condition is always FALSE)

Delete DML statment tales more time than Update or Insert.

i want to know whether a delete statement takes more time than an update or insert DML command. Please help in solving the doubt.
Regards.

I agree: the amount of ROLLBACK (called UNDO) and ROLLFORWARD (called REDO) information written by the various statement has a crucial impact on the speed.
I did some simple benchmarks for INSERT, UPDATE and DELETE using a 1 million row simple table. As an alternative to the long UPDATEs and DELETEs, I tested also the usual workarounds (which have only partial applicability).
Here are the conclusions (quite important in my opinion, but not to be taken as universal truth):
1. Duration of DML statements for 1 million rows operations (with the size of redo generated):
--- INSERT: 3.5 sec (redo: 3.8 MB)
--- UPDATE: 24.8 sec (redo: 240 MB)
--- DELETE: 26.1 sec (redo: 228 MB)
2. Replacement of DELETE with TRUNCATE
--- DELETE: 26.1 sec (rollback: 228 MB)
--- TRUNCATE: 0.1 sec (rollback: 0.1 MB)
3. Replacement of UPDATE with CREATE new TABLE AS SELECT (followed by DROP ols and RENAME new AS old)
--- UPDATE: 24.8 sec (redo_size: 240 MB)
--- replacement: 3.5 sec (rollback: 0.3 MB)
-- * Preparation *
CREATE TABLE ao AS
    SELECT rownum AS id,
          'N' || rownum AS name
     FROM all_objects, all_objects
    WHERE rownum <= 1000000;
CREATE OR REPLACE PROCEDURE print_my_stat(p_name IN v$statname.NAME%TYPE) IS
    v_value v$mystat.VALUE%TYPE;
BEGIN
    SELECT b.VALUE
      INTO v_value
      FROM v$statname a,
           v$mystat   b
     WHERE a.statistic# = b.statistic# AND lower(a.NAME) LIKE lower(p_name);
    dbms_output.put_line('*' || p_name || ': ' || v_value);
END print_my_stat;
-- * Test 1: Comparison of INSERT, UPDATE and DELETE *
CREATE TABLE ao1 AS
    SELECT * FROM ao WHERE 1 = 2;
exec print_my_stat('redo_size')
*redo_size= 277,220,544
INSERT INTO ao1 SELECT * FROM ao;
1000000 rows inserted
executed in 3.465 seconds
exec print_my_stat('redo_size')
*redo_size= 301,058,852
commit;
UPDATE ao1 SET name = 'M' || SUBSTR(name, 2);
1000000 rows updated
executed in 24.786 seconds
exec print_my_stat('redo_size')
*redo_size= 545,996,280
commit;
DELETE FROM ao1;
1000000 rows deleted
executed in 26.128 seconds
exec print_my_stat('redo_size')
*redo_size= 783,655,196
commit;
-- * Test 2: Replace DELETE with TRUNCATE *
DROP TABLE ao1;
CREATE TABLE ao1 AS
    SELECT * FROM ao;
exec print_my_stat('redo_size')
*redo_size= 807,554,512
TRUNCATE TABLE ao1;
executed in 0.08 seconds
exec print_my_stat('redo_size')
*redo_size= 807,616,528
-- * Test 3: Replace UPDATE with CREATE TABLE AS SELECT *
INSERT INTO ao1 SELECT * FROM ao;
commit;
exec print_my_stat('redo_size')
*redo_size= 831,525,556
CREATE TABLE ao2 AS
    SELECT id, 'M' || SUBSTR(name, 2) name FROM ao1;
executed in 3.125 seconds
DROP TABLE ao1;
executed in 0.32 seconds
RENAME ao2 TO ao1;
executed in 0.01 seconds
exec print_my_stat('redo_size')
*redo_size= 831,797,608

Delete DML statment takes more time than Update or Insert.

i want to know whether a delete statement takes more time than an update or insert DML command. Please help in solving the doubt.
Regards.

i do not get good answers sometimes, so, i ask again.I think Alex answer to your post was quite complete. If you missed some information, continue the same post, instead of opening a new thread with the same subject and content.
You should be satistied with the answers you get, I also answered your question about global indexes, and I do think my answer was very complete. You may ask more if you want, but stop multiposting please. It is quite annoying.
Ok, have a nice day

As i am fresher Please share the doc of ECMA script using java script in SharePoint 2013 also how we can insert,update,delete records in list using ECMA script.

As i am fresher Please share the doc of ECMA script using java script in SharePoint 2013 step by step also how we can insert,update,delete records in list using ECMA script.
Thanks and Regards, Rangnath Mali

Hi,
According to your post, my understanding is that you want to use JavaScript to work with SharePoint list.
To create list items, we can create a ListItemCreationInformation object, set its properties, and pass it as parameter to the addItem(parameters) function
of the List object.
To set list item properties, we can use a column indexer to make an assignment, and call the update() function so that changes will take effect when you callexecuteQueryAsync(succeededCallback,
failedCallback).
And to delete a list item, call the deleteObject() function on the object.
There is an MSDN article about the details steps of this topic, you can have a look at it.
How to: Create, Update, and Delete List Items Using JavaScript
Thanks & Regards,
Jason
Jason Guo
TechNet Community Support

Best approach to Update / Delete / Insert

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