Use of SELECT SINGLE FOR UPDATE

Hello,
Am I missing something with FOR UPDATE addition in Open SQL? When I use it I can't get a lock to appear to SM12. For example, if I select a single record for update from table EKKO it's still possible to effect a normal MEPO update of the releavnt purchase order even before a COMMIT WORK command in my code.
Any ideas?
Thanks,
Chris.

Hello Chris
FOR UPDATE command creates only a database lock,
you can't see database locks in sm12.
You should use related "lock object" to lock entries in table EKKO with sm12
For finding the lock object follow steps below :
- Go to transaction se11
- Write your table EKKO
- Click button : Where Used List
- Choose only "Lock object" in the next popup screen
Every lock object has two function module ENQUEUE_<LOCK OBJ NAME> and DEQUEUE_<LOCK OBJ NAME>
enqueue function creates lock in sm12 and dequeue deletes lock entry from sm12.
And you can display parameters from se37 and use it.
I hope it helps.

Similar Messages

Select single for update not creating lock on entry

Hi All,
I want to update an entry from MARA table so what ii did is
select single for update *   from mara where matnr = 'ZYS'.
The for update is supposed to create a lock for me and the the lock is released after the commit or roll back.
I'm running this prg in debug mode and after the statment
select single for update *   from mara where matnr = 'ZYS''.
I opened MM02 for this material and could change the data which i'm not supposed to be as there is lock on this particular mater from single for update statemnt
or
I even tried from other program
select single *   from mara where matnr = 'ZYS'. in debug mode and it returned a sy-subrc eq 0.
and i don't see a lock in SM12 FOR SELECT * FOR UPDATE.....
Can anyone clarify on this
Thanks
David

Hi All,
I knew we can create a lock object but thought to give a shot without creating lock object.
So i'm just curious to know when we can use select * for update
F1 Help says select * for update creates an E type lock- which will prevent other locks(X AND S type locks) overwriting or even reading that entry
Also ,
can someone throw some light DB lock and SAP Lock ( is this same as SAP LUW and DB LUW)
Thanks
David

When should SELECT ..FOR UPDATE be used?

DB Version:10gR2
This is what 10gR2 PL/SQL documentation says about SELECT...FOR UPDATE
With the SELECT FOR UPDATE statement, you can explicitly lock specific rows of a
table to make sure they do not change after you have read them. That way, you
can check which or how many rows will be affected by an UPDATE or DELETE
statement before issuing the statement, and no other application can change the
rows in the meantime
But i don't see SELECT...FOR UPDATE much in our production codes. Is SELECT ..FOR UPDATE used when huge amount of rows need to be updated?

Its maily used for locking table with differnt node , commely this concpet where used in
ERP products, bcoz different user can acces same table at time and do some DML
operation, using FOR UPDATE will protected ,
before that read this
hb venki

SINGLE FOR UPDATE

Hi,
can anybody tell me the user of "SINGLE FOR UPDATE" keywords in SELECT statement?
Priya

As given by SAP -
... SINGLE [FOR UPDATE]
If SINGLE is specified, the resulting set has a single line. If the remaining additions to the SELECT command select more than one line from the database, the first line that is found is entered into the resulting set. The data objects specified after INTO may not be internal tables, and the APPENDING addition may not be used. The addition ORDER BY can also not be used.
An exclusive <b>LOCK</b> can be set for this line using the FOR UPDATE addition when a single line is being read with SINGLE. The SELECT command is used in this case only if all primary key fields in logical expressions linked by AND are checked to make sure they are the same in the WHERE condition. Otherwise, the resulting set is empty and sy-subrc is set to 8. If the lock causes a deadlock, an exception occurs. If the FOR UPDATE addition is used, the SELECT command circumvents SAP buffering.
LOCK - Lock protected data from being accessed by several users at the same time as a shared lock or as exclusive locks
Regards,
Amit
Reward all helpful replies.

HT4641 Im trying to print off my cv, page 1 prints off fine but page 2 does not, I'm using the selected template for curriculum vitae why does my page 2 not print?

Im trying to print off my cv, page 1 prints off fine but page 2 does not, I'm using the selected template for curriculum vitae why does my page 2 not print?

Hi @kots
I suspect your question would be better answered in the HP Enterprise Business Community, as your HP Printer is a commercial model.
My technical expertise is with consumer products and software, I am sure the commercial folks would be happy to help if you re-post your question for them to answer. The HP Enterprise Business Community is an HP Forum designed for the Commercial and Enterprise customers to help one another. I am sure you will find some HP folks there to help too.
Click here to view the Printing and Digital Imaging. When the page opens you will see the option to 'Log in' or 'Register Now' on the right. The commercial forums are separate from the consumer boards, thus you will need to register if you don't already have a commercial account.
You may find the HP LaserJet M2727 Multifunction Printer series page helpful while you wait for somebody in the commercial Forum to respond to your inquiry.
Best of luck.
Please click the Thumbs up icon below to thank me for responding.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.
Sunshyn2005 - I work on behalf of HP

When I select "Check for updates..."

Dear Firefox,
When I select "Check for Updates" the pop up screen simply notes that my system is "Downloading update" but nothing ever happens.
Please let me know what I can do to fix this.
Thank you,
Lee

You can download the latest Firefox 4 beta version from http://www.mozilla.com/firefox/all-beta.html
Trash the current Firefox 4.0b7 version and install the latest beta.

Error occuring in SELECT statement FOR UPDATE when using WITH cluase

Hi,
Iam using oracle 11g version
Iam having a query with fetch records for update insid with cluase as
cursor c1 is
With abc as (
SELECT col1,col2 from table1, table2 where < condition>
for update of <col1> skip locked
select * from abc,table3 where <condition>
union all
select * from table4 where id not in (select * from abc)
if i add "for update of <col1> skip locked" this cluase
iam getting error ORA-00907: missing right parenthesis
when i remove "for update of <col1> skip locked" the block is working fine..
can i know why error is occuring i

Hi, first of all, your placing of "for update" clause is wrong. It should be at the end like:
With abc as (
SELECT col1,col2 from table1, table2 where < condition>
select * from abc,table3 where <condition>
union all
select * from table4 where id not in (select * from abc)
for update of <col1> skip locked;Second, if you try to compile it with this syntax then you will get a new error.
ORA-01786:     FOR UPDATE of this query expression is not allowed
Cause:     An attempt was made to use a FOR UPDATE clause on the result of a set expression involving GROUP BY, DISTINCT, UNION, INTERSECT, or MINUS.
Action:     Check the syntax, remove the FOR UPDATE clause, and retry the statement.So, you will not be successful with the union clause in your query.

'Missing select' error for update statement using WITH clause

Hi,
I am getting the below error for update statement using WITH clause
SQL Error: ORA-00928: missing SELECT keyword
UPDATE A
set A.col1 = 'val1'
     where
A.col2 IN (
WITH D AS
SELECT col2 FROM
(SELECT col2, MIN(datecol) col3 FROM DS
WHERE <conditions>
    GROUP BY PATIENT) D2
WHERE
<conditions on A.col4 and D2.col3>

Hi,
The format of a query using WITH is:
WITH d AS
    SELECT ... -- sub_query
SELECT ...   -- main query
You don't have a main query. The keyword FROM has to come immediately after the right ')' that ends the last WITH clause sub-query.
That explains the problem based on what you posted. I can't tell if the real problem is in the conditions that you didn't post.
I hope this answers your question.
If not, post a complete test script that people can run to re-create the problem and test their ideas. Include a little sample data (CREATE TABLE and INSERT statements, relevant columns only) for all the tables involved, and the results you want from that data.
In the case of a DML operation (such as UPDATE) the sample data should show what the tables are like before the DML, and the results will be the contents of the changed table(s) after the DML.
Explain, using specific examples, how you get those results from that data.
Always say what version of Oracle you're using (e.g. 11.2.0.2.0).
See the forum FAQ: https://forums.oracle.com/message/9362002

Using two cursors, one for updating salary values in the emp table

Using COPIES of the employee and department tables provided by Oracle or using similar taples that provide employee, salary, job and dept in one table and dept number and department name in another table, write the following program. Use the dept table to step through sequentially and bring up the records with the same department from the employee table. Using an IF statement calcuate a new salary based on the job (you decide on the criteria). Update each record on the employee file (this is why you should use copies) with the new salary. In addition, calculate the total salary for each department and create a new table with the department number, the department name and the salary.
I'm able to update the salary values, but I'm not sure how to insert those updated values into an empty table the way this problem is asking me to.
Here's my script so far: any help would be greatly appreciated: )
declare
v_deptno emp.deptno%type;
v_job emp.job%type;
v_sal emp.sal%type;
v_dname dept.dname%type;
v_deptsal totalsal.deptsal%type;
cursor salup_c is
select job,sal
from emp,dept
where emp.deptno = dept.deptno
for update of sal;
cursor totdeptsal_c is
select dname,sal
from emp,dept
where emp.deptno = dept.deptno;
Begin
open salup_c;
loop
fetch salup_c into v_job,v_sal;
exit when salup_c%notfound;
if v_job = 'CLERK' then
v_sal := v_sal + 10;
else
if v_job = 'ANALYST' then
v_sal := v_sal + 20;
else
if v_job = 'MANAGER' then
v_sal := v_sal + 30;
else
if v_job = 'PRESIDENT' then
v_sal := v_sal + 40;
else v_sal := v_sal + 50;
end if;
end if;
end if;
end if;
update emp
set sal = v_sal
where current of salup_c;
open totdeptsal_c;
v_deptsal := 0;
loop
fetch totdeptsal_c into v_dname, v_deptsal;
exit when totdeptsal_c%notfound;
v_deptsal := v_deptsal + v_sal;
insert into totalsal
values(v_deptno,v_dname,v_deptsal);
end loop;
close totdeptsal_c;
end loop;
close salup_c;
end;
/

The script is actually inserting some values into the new table but look at what I'm getting
Here it is: i only want the dept number ,the dept name, and total salary for each department.
SQL> @ sndprob;
PL/SQL procedure successfully completed.
SQL> select * from totalsal;
DEPTNO DNAME DEPTSAL
RESEARCH 1620
SALES 2410
SALES 2060
RESEARCH 3785
SALES 2060
SALES 3660
ACCOUNTING 3260
RESEARCH 3810
ACCOUNTING 5810
SALES 2310
RESEARCH 1910
DEPTNO DNAME DEPTSAL
SALES 1760
RESEARCH 3810
ACCOUNTING 2110
RESEARCH 2460
SALES 3300
SALES 2900
RESEARCH 4625
SALES 2900
SALES 4500
ACCOUNTING 4100
RESEARCH 4650
DEPTNO DNAME DEPTSAL
ACCOUNTING 6650
SALES 3150
RESEARCH 2750
SALES 2600
RESEARCH 4650
ACCOUNTING 2950
RESEARCH 2110
SALES 2950
SALES 2600
RESEARCH 4275
SALES 2550
DEPTNO DNAME DEPTSAL
SALES 4150
ACCOUNTING 3750
RESEARCH 4300
ACCOUNTING 6300
SALES 2800
RESEARCH 2400
SALES 2250
RESEARCH 4300
ACCOUNTING 2600
RESEARCH 3815
SALES 4655
DEPTNO DNAME DEPTSAL
SALES 4305
RESEARCH 6010
SALES 4255
SALES 5855
ACCOUNTING 5455
RESEARCH 6005
ACCOUNTING 8005
SALES 4505
RESEARCH 4105
SALES 3955
RESEARCH 6005
DEPTNO DNAME DEPTSAL
ACCOUNTING 4305
RESEARCH 2110
SALES 2950
SALES 2600
RESEARCH 4305
SALES 2600
SALES 4150
ACCOUNTING 3750
RESEARCH 4300
ACCOUNTING 6300
SALES 2800
DEPTNO DNAME DEPTSAL
RESEARCH 2400
SALES 2250
RESEARCH 4300
ACCOUNTING 2600
RESEARCH 3690
SALES 4530
SALES 4180
RESEARCH 5885
SALES 4180
SALES 5760
ACCOUNTING 5330
DEPTNO DNAME DEPTSAL
RESEARCH 5880
ACCOUNTING 7880
SALES 4380
RESEARCH 3980
SALES 3830
RESEARCH 5880
ACCOUNTING 4180
RESEARCH 3290
SALES 4130
SALES 3780
RESEARCH 5485
DEPTNO DNAME DEPTSAL
SALES 3780
SALES 5360
ACCOUNTING 4960
RESEARCH 5480
ACCOUNTING 7480
SALES 3980
RESEARCH 3580
SALES 3430
RESEARCH 5480
ACCOUNTING 3780
RESEARCH 3830
DEPTNO DNAME DEPTSAL
SALES 4670
SALES 4320
RESEARCH 6025
SALES 4320
SALES 5900
ACCOUNTING 5500
RESEARCH 6040
ACCOUNTING 8020
SALES 4520
RESEARCH 4120
SALES 3970
DEPTNO DNAME DEPTSAL
RESEARCH 6020
ACCOUNTING 4320
RESEARCH 5850
SALES 6690
SALES 6340
RESEARCH 8045
SALES 6340
SALES 7920
ACCOUNTING 7520
RESEARCH 8060
ACCOUNTING 10080
DEPTNO DNAME DEPTSAL
SALES 6540
RESEARCH 6140
SALES 5990
RESEARCH 8040
ACCOUNTING 6340
RESEARCH 2360
SALES 3200
SALES 2850
RESEARCH 4555
SALES 2850
SALES 4430
DEPTNO DNAME DEPTSAL
ACCOUNTING 4030
RESEARCH 4570
ACCOUNTING 6590
SALES 3100
RESEARCH 2650
SALES 2500
RESEARCH 4550
ACCOUNTING 2850
RESEARCH 1920
SALES 2760
SALES 2410
DEPTNO DNAME DEPTSAL
RESEARCH 4115
SALES 2410
SALES 3990
ACCOUNTING 3590
RESEARCH 4130
ACCOUNTING 6150
SALES 2660
RESEARCH 2220
SALES 2060
RESEARCH 4110
ACCOUNTING 2410
DEPTNO DNAME DEPTSAL
RESEARCH 1770
SALES 2610
SALES 2260
RESEARCH 3965
SALES 2260
SALES 3840
ACCOUNTING 3440
RESEARCH 3980
ACCOUNTING 6000
SALES 2510
RESEARCH 2070
DEPTNO DNAME DEPTSAL
SALES 1920
RESEARCH 3960
ACCOUNTING 2260
RESEARCH 3830
SALES 4670
SALES 4320
RESEARCH 6025
SALES 4320
SALES 5900
ACCOUNTING 5500
RESEARCH 6040
DEPTNO DNAME DEPTSAL
ACCOUNTING 8060
SALES 4570
RESEARCH 4130
SALES 3980
RESEARCH 6040
ACCOUNTING 4320
RESEARCH 2120
SALES 2960
SALES 2610
RESEARCH 4315
SALES 2610
DEPTNO DNAME DEPTSAL
SALES 4190
ACCOUNTING 3790
RESEARCH 4330
ACCOUNTING 6350
SALES 2860
RESEARCH 2420
SALES 2270
RESEARCH 4330
ACCOUNTING 2620
196 rows selected.

ERROR using SQL Server 2000, FOR UPDATE clause problem

Hi All,
Because our main target for RDBMS mostly SqlServer2000, I try to use ADF BC with one. I successfully run the BC with Tester, scrolling up and down, BUT when i try to make changes and do commit, I receive ERROR, I have tried both JDBC Driver from Microsoft and jTDS, both FAILS.
I have set the 'Default Locking Mode ..' to 'optimistic'
(default is 'pessimistic'), it doesn't help.
Here is the error :
With Microsoft JDBC Driver :
(oracle.jbo.DMLException) JBO-26080: Error while selecting entity for Departments
----- LEVEL 1: DETAIL 0 -----
(java.sql.SQLException) [Microsoft][SQLServer 2000 Driver for JDBC][SQLServer] FOR UPDATE cannot be specified on a READ ONLY cursor.
With jTDS JDBC Driver :
(oracle.jbo.DMLException) JBO-26080: Error while selecting entity for Departments
----- LEVEL 1: DETAIL 0 -----
(java.sql.SQLException) Line 1: FOR UPDATE clause allowed only for DECLARE CURSOR.
Pls any body help...
Thank you,
Krist

Krist,
we added a new SQL Flavor 'SQLServer' in JDeveloper 10.1.2
This was implemented to handle special SQL syntax of SQLServer, different from SQL92 (among others the FOR UPDATE problem you're facing).
For new projects, you can select this flavor during their creation. For projects that were defined with Flavor SQL92, you can switch to SQLServer at runtime by setting the parameter jbo.SQLBuilder=SQLServer (in your Application Module configuration or as a java option -Djbo.SQLBuilder=...)
Regards,
Didier.

How to use At Selection Screen for fields whiledealing with Multiple Blocks

Hi Guys,
            In my requirement i am having 4 blocks.1st block with raduio buttons for activating the opther 3 Blocks.
              In these 3 blocks i am having some fields.
       How to do Validation for these fields.?
I am using At Selection-screen on S-SCAD1. I am getting error"S_SCACD1 is neither a selection screen nor a Parameter"
On the top of this" At Selection-screen on S-SCAD1" I am having"AT SELECTION-SCREEN OUTPUT."
                Can anybody tell me how to solve this error?
Thanks,
Gopi.

If you are using your block name than you should use like:
AT SELECTION-SCREEN ON BLOCK S-SCAD1.
Regards,
Naimesh Patel

"Xcode cannot run using the selected device" for no apparent reason.

EDIT: It was just because I hadn't told Xcode to use my iPhone for development... I thought I had already done that. I also had to wait a few minutes after enabling it for development for it to actually work.
I'm using Xcode 5 and an iPhone 5 for development. I made an app ID with the ID "com.myname.agreementfinder". Then I made a development provisioning profile linked to that app ID. In my developer provisioning profile dashboard, it clearly says that the app ID is "com.myname.agreementfinder". I downloaded the provisioning profile and put it on my iPhone using the Xcode organizer, no problems. So now I have a profile in my organizer that has the app identifier "U2M9******.com.myname.agreementfinder" (part of it censored). Not sure what that weird number at the beginning is, but my other profiles have one too.
I have a project with the bundle identifier "com.myname.agreementfinder" and deployment target iOS 7.0 on iPhone, so it should work with that, right? Actually, the project was renamed from "FBFun". Well Xcode keeps saying that it can't run it on there because "No provisioned iOS devices are available with a compatible iOS version." I wish it would say which, invalid version or no provisioning profile
How should I fix this? It seems like everything is already fine, yet it won't work. Could it be that renaming the project caused problems?

I did. I did "Product -> Clean", it replied : "Clean vog_x20_new: Succeeded" and then I did "Product -> Build", and it replied "Build vog_x20_new: Succeeded".
Ok, so I may have misunderstood my own problem. It's not a compilation problem. But, I still have the same message when I try to run the program (i.e. "Xcode cannot run using the selected destination").
So it seems that I can build the project but I cannot run it.
Here is a screenshot of the error windows
So what should I do next ?
Thanks for you attention and help.

When I try to select "Check for update" (iPhone 4s - iOS 5.0.1), Error message 1630 appear. What is wrong with my iphone or itune?

I am using iPhone 4s with iOS 5.0.2.
Just updated to the lastest iTune 10.5.1.
When i click Check for Update on the iTune, the above error shown:
"iTunes could not check for an update to the carier settings for your iphone. Unknow error occured (1630)"

Also, Settings > General > About > Diagnostics & Usage is FULL of error reports relating to Twitter. :/

Iphone using wrong apple id for updates

This has been working in the past but today it is not. I have updated to iOS software 7.1 (11D167) but I don't know if that caused this problem. I only know that I have successfully installed software updates in the past but when I tried today I could not.
I have 5 apps showing as needing updates. They are Bing Search, Lose It!, Yellow Pages and Ancestry. When I try to update all or even each one individually, it prompts me to sign in to iTunes Store and asks for the apple ID password and shows my apple id. What is showing is a very old ID and not my full email address. When I put my apple ID password in it does not recognize it.
I then decided to try and install a new app and see if the app store would have the correct apple ID. When I selected to install the new app, it prompted me for my apple ID password and had the correct apple ID (my full email address showing). I entered my apple ID and the install proceeded successfully.
I saw on another post that there might be old apple IDs in settings for messages, itunes store, etc. so I checked those settings and all of them have my correct full email address for the apple ID.
What's mostly frustrating is that these apps were free to start with so why do I have to enter in a password at all for the updates?
Does anyone know why my phone has reverted to an old apple ID for app updates only, and why now when it was working before? Is there a way I can get apple to destroy any reference to my old unused (and now unacceptable format) apple ID so that it won't pop up to haunt me again?
Thanks for any guidance...

Delete the apps from the phone and re-download or re-purchase them with the ID you intend to use.

Use of Select stmts with Update stmts

Hi,
I want to execute the following update stmt...
UPDATE Test1_tab a
SET a.invpln_seq_no = (SELECT b.seq_no
FROM Test2_tab b
WHERE b.contract_id = a.contract_id
AND b.date_from = a.period_from_date)
WHERE a.invpln_seq_no != (SELECT b.seq_no
FROM Test2_tab b
WHERE b.contract_id = a.contract_id
AND b.date_from = a.period_from_date)
Here the problem is I have used 'SELECT b.seq_no FROM Test2_tab b WHERE b.contract_id = a.contract_id AND b.date_from = a.period_from_date' twice, one in the SET clause and the other one in WHERE clause...But it is the same SELECT stmt...So this same Select stmt runs twice when I run the whole update stmt I guess. Is there a way to do the above update, where it runs the SELECT stmt only once...
Any input is highly appreciated...
Thanks And Best Regards,
/Dinesh...

Then you can use Merge statement instead.
try this
merge into test1_tab t1
using
(SELECT a.rowid,b.seq_no SEQ_DEST
FROM test1_tab a,test2_tab b
WHERE b.contract_id = a.contract_id
AND b.date_from = a.period_from_date
AND a.invpln_seq_no != b.seq_no) t2
ON (t1.rowid=t2.rowid)
WHEN MATCHED THEN
UPDATE SET t1.invpln_seq_no=t2.seq_destor if you are sure that sno is a unique key with out any duplicates and if you are going to perform one time manual update then you can use an undocumented hint /*+ bypass_ujvc */ to do this.
*DO NOT include this code if you are about to add it in a production procedure or a function
UPDATE /*+ bypass_ujvc */ (SELECT a.invpln_seq_no SEQ_SRC,b.seq_no SEQ_DEST FROM test1_tab a,test2_tab b
WHERE b.contract_id = a.contract_id
AND b.date_from = a.period_from_date
AND a.invpln_seq_no != b.seq_no)
SET SEQ_SRC = SEQ_DESTRegards,
Prazy

Use of SELECT SINGLE FOR UPDATE

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