How to lock a table when i insert a row

hi, friends,
how to lock a table when i insert a row, then unlock the table

If you want to lock the whole table so that no-one else can do DML then you go LOCK TABLE <table> IN EXCLUSIVE MODE. This lock remains in force until you commit or rollback.
There are less powerful locking modes available, but you can look those up in the OTN online documentation.
APC

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How to add multiple table when creating add on using b1de

Hi all,
Plz help me
How to add multiple table when creating add on using b1de.
Thanks

Hi dns_sap,
Can you explain a little better what you are trying to accomplish? Is it to create UserTables and UserFields in the database, when the addon runs the first time?
If so, you can use the following code
Add User Table
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Regards,
Vítor Vieira

How to hide system tables when using the Oracle SQL Developer?

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Hi,
I would like to know how can I show only the tables that I created under the Tables tree? Your posting is not clear,again tell something more on tables tree,what u want to achieve with it.
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How to lock a table

Hi all,
When I insert a record to a table , how to lock it for
preventing others write the table at the same time?
Thanks.

If you want to use online documentation, go to
http://tahiti.oracle.com
and search for "lock table"

How to lock DB table

Hello, I'm using EclipseLink 1.2 (I hope I've chosen right forum branch). I need to lock a DB table.
I know there are some methods like lock(), refresh(), find() with LockModeType enum parameter. I know that I can lock all rows returned with a query if I use parameter LockModeType. But I need to lock table fully for insert, update and delete. Besides, I need to lock table not from object model only, but to lock it within DB.
Now I'm executing pl/sql procedure in my method start:
CREATE OR REPLACE PROCEDURE TEST_ME (N NUMBER) AS
BEGIN
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/Is this the only way?

Hello,
I'm not sure I understand the reasoning why you want to lock the entire table, or what you mean when you say it needs to be locked within the database. Pessimistic locking though is generally not the prefered option so if what you are looking for is not available in LockModeType, then of course you can execute SQL or a stored procedure to get a lock directly. I do not know of any other ways to get what you describe - I would recommend avoiding pessmistic locking altogether if possible though.
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How to lock a table in a report program

Hi all,
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Hi,
Hope this information will be useful for you.....
The description of an SAP lock to a table is made via the lock condition and the lock mode.
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Write lock (exclusive lock)
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Enhanced write lock (exclusive lock without cumulation)
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tcode or something?
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Hi Enrique,
Thanks for posting in MSDN.
Based on the description, you want to modify the formula for the A1 and B1 cell when you insert a new rows.
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Private Sub Worksheet_SelectionChange(ByVal Target As Range)
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You can more detail about Excel VBA developing from link below:
Getting Started with VBA in Excel 2010
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Hi
I have created a ztable in se11 and maintained table maintenance generator SM30.
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>
deepak thimmegowda wrote:
> Hi
>
> I have created a ztable in se11 and maintained table maintenance generator SM30.
>
> Now i need to insert multiple rows into the table with all fields editable.
>
> How can i achieve this?
>
> Thanks in advance.
Create a Table maintenance generator with One Step .
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I've got some additional info, which I think is a bug.
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It will insert a record into a table. If report generate successfully, it will update the status to completed and vice versa.
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{color:#000000}Begin
INSERT ..........
Some Processing......
Call Report.......
UPDATE the status .......
Exception
When OTHERS THEN
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End{color}
Thanks.

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How oracle locks child table with foreign keys?

I have 3 tables. tab1 , tab2,tab3.
tab2 has FK on tab1.
tab3 has FK on tab2.All the FKs are indexed.
One transaction in my code changes tab3.
One transaction in my code changes tab1,tab2 and tab3.
I am facing deadlock issues on tab3 when both transactions work concurrently.
If I lock tab1 with "for update nowait " at the start of both transaction,will the problem be solved?

Let me elaborate on my problem
TAB1
=====
a1 b1 c1
a2 b2 c2
a3 b3 c3
TAB2
=====
x1 y1 z1 a1
x2 y2 z2 a2
x3 y3 z3 a3
(FK indexed)
TAB3
=====
p1 q1 r1 y1
p2 q2 r2 y2
p3 q3 r3 y3
(FK indexed)
Transaction 1 for session1
select * from TAB1 where col1 = a1 for update nowait;
doing activities on tab2 and tab3 depending on the foreign key joins in loop.
Transaction 2 for session 2
select * from TAB1 where col1 = a2 for update nowait;
doing activities on tab2 and tab3 depending on the foreign key joins in loop.
1) Please let me know whether these sessions can head towards deadlock.
2) If some session try to update TAB3 row of y1 when session 1 is still working , how will system behave?
will it go for blocked session or go for dead lock or get an exception message?
Edited by: user9974355 on Dec 17, 2008 11:58 PM
Edited by: user9974355 on Dec 18, 2008 12:00 AM

How to lock a table when i insert a row

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