Lock record problem.
Hi All. I use Firebird DB with WLS. In Firebird when no DataBase transaction parameters specified the default parameters is set. By default transaction isolation levels is "concurency, wait". It means that when 2 concurrent transations try to lock record (select ... from table for update), second transactoin waits while the first will be complete. I need exception in this case (nowait in transactoin parameters).
In Firebird JDBC driver there is a file with mapping to standart jdbc transaction isolation levels:
TRANSACTION_SERIALIZABLE=isc_tpb_consistency,isc_tpb_write,isc_tpb_wait
TRANSACTION_REPEATABLE_READ=isc_tpb_concurrency,isc_tpb_write,isc_tpb_wait
TRANSACTION_READ_COMMITTED=isc_tpb_read_committed,isc_tpb_rec_version,isc_tpb_write,isc_tpb_wait
I change wait to nowait in this file, bat i dont no where i can set transaction isolation level on weblogic server. How I can do this?
In the on-lock trigger, instead of Lock_record; you should write your own sql "select for update no wait".
Then I am not sure... either write your own exception clause to trap the ORA-00054, or trap the exception in the on-error trigger.
Similar Messages
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Lock records when in Update Mode / problem with 2 users on 1 document
Hi,
when user A updates e.g. a purchase order and user B goes into this purchase order and updates e.g. the remark before user A, then user A cannot save his changes. Imagine user A has put in several new lines and has made several price adjustments, his work will be gone.
In most cases this should not happen very often, but it could. Since B1 recognizes when another user has updated the document before, it should be possible to solve this situation more convenient (either by lock, saving to a new document, comparing to the old version, etc).
Thank you
SebastianHi Sebastian,
Your request is understandable. It may not have big problem to change current process by coding. However to lock records whenever in update mode, that could create too many locks. It is basically not good for performance. The trade off may be allowing save as function. However, this may not be a desirable solution for most end users.
Thanks,
Gordon -
Reading Locked records from HR table using LDB PNP
Hi,
I am trying to read the table pa0168 using LDB PNP.
But the problem is that get pernr staement does not retrieve locked records i.e where PA0168-sprps eq "X'.
Can anybody help me with this.
I have to use LDB so i don't want a solution of writing a select * for the pa0168 table.
hence i have to use get pernr statement but it should also retrieve locked records.
how can i achieve that.? please help
Thanks
GT
Message was edited by: GTHi GT,
In the START-OF-SELECTION event, set the parameter value
pnp-sw-ignorelockedrecords = 'N'.
Good Luck,
Suresh Datti
( Pl award points if the answer helps you ) -
Hi,
Here is the scenario:
We have several users (in AutoCAD) that retrieve, delete, modify, and post data back to Oracle Spatial DB (10g).
During data retrieval, we use the SDO_WITHIN_DISTANCE operator based from either a Road Name or Building Name with a flexible buffer distance. Now, the chances of the users having retrieved the same records are very high.
My query is, is there an indicator in the row level that will show that the particular record has already been locked/retrieved by another user? I have read about the "SELECT .... FOR UPDATE" system of locking records, but the problem would be the possibilities of having a "Lockout" or a "Deadlock". That is why, we would like to handle the records firsthand before displaying it into AutoCAD.
Knowing this, we can provide some mechanism in AutoCAD to avoid the record to be modified or deleted by another user (i.e. giving a read-only attribute, changing layer or color, etc. etc.).
Thank you very much for your ideas.
Regards,
Arnold HiguitDepending on your requirements, you may want to do the initial query without trying to lock the records (if you do the select ... for update nowait on the initial query and there are records locked, it will fail).
After you do your initial query, then you can try to select individual records by a unique key for update (using nowait), and any record that is already locked can be styled in an appropriate way.
Note this will be significantly slower (selecting each individual record). -
Dear members,
I hava a problem with lock record. Would you please help me to solve my problem. I had read on OTN messages about locking records that others members have used the following:
On_lock trigger(Block level)
Lock_record;
On_Error trigger(Form level)
DECLARE
errnum NUMBER := ERROR_CODE;
errtxt VARCHAR2(80) := ERROR_TEXT;
errtyp VARCHAR2(3) := ERROR_TYPE;
BEGIN
IF errnum = 40501 THEN
message('This record has been locked by another user');
ELSE
Message(errtyp||'-'||TO_CHAR(errnum)||': '||errtxt);
END IF;
RAISE Form_Trigger_Failure;
END;
I still received the ORACLE message "COULD NOT RESERVE RECORD(2 TRIES). KEEP TRYING? YES OR NO".
If I select "NO" my message will come up, but I want the ORACLE message suppressed. How do I do that!
THANKSIn the on-lock trigger, instead of Lock_record; you should write your own sql "select for update no wait".
Then I am not sure... either write your own exception clause to trap the ORA-00054, or trap the exception in the on-error trigger. -
How to lock record in a remote database ???
Hi All!
How to lock record in a remote table ??? Is it possible to lock by using the RPC ??? What are the options available ??
thanks
Sanjeeb Bose
HCL Infosystems Ltd
Kolkata IndiaDBLinks may be one option...
--Shirish -
How do I resolve LOCKED DISKS problem ? NO ACCESS ANYMORE !
Hello everybody,
I've looked carefully where to post this topic,
and I hope it's the right place here
(I have already been warned not to post the same questions in different places).
I have actually 2 internal volumes locked, 2 external Firewire volumes locked and 2 USB external volumes locked. I'm talking about *5,7 To* with *NO ACCESS* anymore.
It happened suddenly, and I was working on Snow Leopard 10.6.3 internal drive. This volume is the *only one* that has NOT been locked, but I lost a lot of applications, documents and so on on it.
Each of the locked volumes I am talking about shows,
in *Sharing & Permissions* (Get Info window),
the same Privileges :
— everyone : Custom
— admin : Custom
— olcha (Me) : Custom
— staff : Custom
— everyone (again) : Custom
You'll notice that "System" is not there (should be there with R+W),
and "admin" should have also R+W privilege.
I don't know why "staff" is here (perhaps, one day, somebody will explain to me the difference between : wheel, staff and admin).
I also don't know why "everyone" is there two times.
If I unlock the padlock (bottom right) with my password, I can only
check or uncheck the "Ignore ownership on this volume" square (bottom left).
Doing this (apparently) offers *no interest at all* to solve the problem
(and what does this function produce, when activated or not ?).
I can't *absolutely not* :
• Change *any privilege* of any of the 5 items ;
• Remove (with "-") any of these items ;
• Add a line (for example "System" or "wheel", why not ?)
but nothing new is shown after "+" making.
• The wheel (on the right of "+" and "-") shows only "revert changes" in grey.
I phoned immediately last thursday Apple Assistance,
and I am in contact with a Level 2 Apple Adviser who gave me his e-mail.
I sent him two messages, but he replied me that perhaps MONDAY
he could find the time to call me.
Now, first, please tell me if you have any idea or solution !
Thank you very much in advance.
Secondly, I have reflected on the solving,
and would like to know what you think about what follows :
You know that, in Disk Utility, you can erase a disk or partition.
If, in "Security Options…", I choose "Don't Erase Data", and then "Erase…" :
1) Sharing and Permissions will be changed and become (reset to) correct ;
2) It's said, in "Security Options…",
that "many commonly available disk recovery applications can restore that data".
I would be very glad that you indicate me :
1) the best application to use for that recovery ;
2) I already own "Drive Genius 3.0", "Data Rescue 3.0.2" and
(I think it's the best after a try on an internal 30 Go partition)
"Stellar Phoenix Macintosh Data Recovery".
Thank you in advance for your answers and advices,
With my kind regards
Olivier Herrbach
[email protected]
PS : Dear Forum Webmaster,
I would like to know :
1) if I posted this topic in the right place ;
2) if you allow me to post it elsewhere (and in this case, where ?) ;
3) is it possible to paste images in messages,
and, if yes, which format is needed (TIFF, png, jpeg …)
Thank you very much
Olivier HerrbachDear ChazBowie,
Here is the solution I've found for *LOCKED DISKS* problem.
I'll respond the shorter I can, avoiding for the moment to talk about the complicated solutions
that Apple gave to me, which involved volume by volume (only one each time) intervention, and were working by, each time, entering one line, password, then another line in Terminal. I will communicate these instructions later, but they do not need to be publicated here with urgence.
I found two little free softwares that can modify *ALL Privileges* in Sharing and Permissions, *on ANYTHING*. You will have to be careful using them, as they even allow to act as "Root" administrator.
I'd also like everyone to *donate anything* to these helpful developers, and I'd be very pleased to have *your feedback and results*.
••• 1) — *BatChmod 1.6.2* (162), written by a compatriot, Renaud Boisjoly.
E-mail (if you have doubts or questions) : [email protected]
Free software downloading site : *http://www.macchampion.com/arbysoft*
(excuse me, but I don't know how to make a link here).
••• 2) — *FileXaminer 2.7*, recommended by Renaud himself.
Dear ChazBowie,
Here is the solution I've found for *LOCKED DISKS* problem.
I'll respond the shorter I can, avoiding for the moment to talk about the complicated solutions
that Apple gave to me, which involved volume by volume (only one each time) intervention, and were working by, each time, entering one line, password, then another line in Terminal. I will communicate these instructions later, but they do not need to be publicated here with urgence.
I found two little free softwares that can modify *ALL Privileges* in Sharing and Permissions, *on ANYTHING*. You will have to be careful using them, as they even allow to act as "Root" administrator.
I'd also like everyone to *donate anything* to these helpful developers, and I'd be very pleased to have *your feedback and results*.
••• 1) — *BatChmod 1.6.2* (162), written by a compatriot, Renaud Boisjoly.
E-mail (if you have doubts or questions) : [email protected]
Free software downloading site : Gideon Softworks : *http://www.gideonsoftworks.com/*
I won't copy here the texts that are on both sites, but it's very instructive.
Remember that the applications don't only work on files and folders,
*but also on disks attributes*.
You'll also have some work to do (I don't remember, perhaps not), by going in the Get Info windows
and changing privileges to the correct ones, that means you must know
(I'm not sure, verify please) what privileges are to be set for a volume
(YOU WILL HAVE ACCESS TO THEM, AND CHANGES YOU MAKE WON'T BE RESET TO "CUSTOM").
Does anybody know something about the "Ignore ownership on this volume" checkbox ?
*I always uncheck it*.
I would also like very much to know the differences between the two-headed iconed groups :
"staff", "wheel" and "admin", and IN THE END know *WHERE are the rules* you have to observe
when doing changes in privileges (for example, I don't want to give my password to copy something in Users folder, nor "MyName" folder. I've changed that without, I hope, having created any dysfunction).
Please tell me if you know anything about these 2 subjects above.
I'm very glad if my informations have been useful/helpful.
With my kind regards,
Olivier Herrbach -
Recording problem on my Xi-Fi Fatality?
'Recording problem on my Xi-Fi Fatality?d So I have a Xi-Fi Fatality, and I would like to be able to record directly from my computer so that it's own output is also the input. For example, if I'm on ventrillo or something and I want to play a funny mp3 to show my friends I'd like to be able for the audio to come directly from the output.
Anyways, my microphone seems to work fine, and that's where the trouble begins.
I go to the sound control panel and click on the recording tab. ? It has microphone as the default device and it says "working."
There are also options for "Auxillary" "Line-In" "Digital-In" and "What U Hear"
However, under each of them it says "currently unavailable"
I am unable to get any of them to function even when I set them to the default device.
Is this normal?+ It's funny you should post this because I came here right now to post the exact same thing. I would have posted earlier but I forgot my account information and had to wait to get a reply email.
So... same here (yes I know this was no help).
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Standard Report to display locked records of an infotype
Hi All,
Is there any SAP standard report to display the locked records of an employee.
Suppose for an employee his two absence record has been locked and one additional payment has been locked. Is there any SAP standard report to display his locked records.
Thanks and Regards,
Visali. MalepatiHi,
Hi there is no standard report to get the locked records.
You create a query thru quick viewer.
where you can heve selection field as lock indicator and Personnel number.
Steps:
1. Goto SQ01
click Qucikviewer
or
SQVI
2.Create a new query
Datasouce:Table
Table:PA0006
3.Lst field Selection tab:
Add the fields pernr,lock indicator,enddat,begdate.
4.Selection fields Tab:
Add the fields pernr,lock indicator
5.Execute:
Your Query is ready now: -
Hi,
How can I lock records in 8.1.7 so that only one user can select/update these records at one time? If possible, can it return an error mesg if one user try to select/update records locked by others?
Thanks a lot.
DavidOracle automatically locks a row just before updating or deleting.
You can lock rows explicitly before doing an update etc by selecting it for update:
select * from emp where empno=21 for update;
update emp
set sal=sal*1.1
where empno=21;
commit;
The lock will be released on the commit (or rollback).
Please note that in Oracle, writers never block readers and readers never block writers. Which means, that although you have locked a row (or group of rows) for update, other users will still be able to select against those rows (in the pre-changed or consistant state). -
Row lock contention problem on Inventory Management
Hi
My client is product based company and have e-Commerce (online Sale Order) application using Oracle database 10.2.0.5 & Web application deployed on WLS. Client have ~ 90 Warehouse country wide and ~ 200 Products (Items). Each product stock for each warehouse is maintained in Inventory Table (INV_BALANCE) which get updated for each order and their sale's products. We are using NO WAIT function to acquire lock on row to update stock balance. Last few months, client business is growing very fast and during Promotional Events (EXPO), they have sales of ~ 75K orders (~ 250K Items) within 2-3 days which start causing row lock contention problem on INV_BALANCE table. We are seeing lots of "Row Lock Wait" and "enq: TX - row lock contention" event which cause ORA-00060: Deadlock detected and we need to eventually clear blocking sessions or everything just choked.
select statistic_name,value from sys.v_$segment_statistics where object_name = 'INV_BALANCE'
STATISTIC_NAME VALUE
logical reads 12423072
buffer busy waits 3895
db block changes 3516768
physical reads 957
physical writes 12197
row lock waits 49909
space used -52921
Deadlock graph:
---------Blocker(s)-------- ---------Waiter(s)---------
Resource Name process session holds waits process session holds waits
TX-00880017-00002584 321 1675 X 110 1445 X
TX-00b60008-00000741 110 1445 X 337 2158 X
TX-0148000b-0000009e 337 2158 X 378 1525 X
TX-01d50015-0000006f 378 1525 X 363 1842 X
TX-02290012-00000070 363 1842 X 267 1798 X
TX-024a0026-0000006e 267 1798 X 364 2084 X
TX-020a0004-0000006f 364 2084 X 135 2113 X
TX-01dc001f-00000070 135 2113 X 129 1586 X
session 1675: DID 0001-0141-000001CA session 1445: DID 0001-006E-00000202
session 1445: DID 0001-006E-00000202 session 2158: DID 0001-0151-0000026B
session 2158: DID 0001-0151-0000026B session 1525: DID 0001-017A-00000167
session 1525: DID 0001-017A-00000167 session 1842: DID 0001-016B-000002B4
session 1842: DID 0001-016B-000002B4 session 1798: DID 0001-010B-000001F1
Rows waited on:
Session 1445: obj - rowid = 0001AE0E - AAAlK8AAHAAD7rMABY
(dictionary objn - 110094, file - 7, block - 1030860, slot - 88)
Session 2158: obj - rowid = 0001AE0E - AAAlK8AAHAAD7rMACD
(dictionary objn - 110094, file - 7, block - 1030860, slot - 131)
Session 1525: obj - rowid = 0001AE0E - AAAlK8AAHAAD7rOAB2
(dictionary objn - 110094, file - 7, block - 1030862, slot - 118)
Information on the OTHER waiting sessions:
Session 1445:
sid: 1445 ser: 37 audsid: 38316795 user: 69/<none>
program: JDBC Thin Client
application name: JDBC Thin Client, hash value=2546894660
Current SQL Statement:
SELECT ROWID, NVL(QTY_PEND,0)+NVL(:B3 ,0) FROM INV_BALANCE WHERE WHS_ID = :B2 AND STOCK_ID = :B1 FOR UPDATE OF QTY_PEND WAIT 10
Please help me on following
Q1: How can we reduce the "row lock Contention" on INV_BALANCE, all possible ways & best practices?
Q2: How can we change the design to not have "row lock Contention" at all?
Appreciate your help
Thanks
Amit Garg
www.otnblogs.comHi Amit!
I saw you are using FOR UPDATE in your query.
If you want reduce row locks, then you not must use FOR UPDATE.
As you know, FOR UPDATE is locking rows.
Regards
Mahir M. Quluzade -
How to get locked records of a pernr while using PNP LDB
is there any way to retrieve locked records of a pernr
while using PNP LDB??currently the get pernr event is unable to load locked records of a pernr.Hi,
PL use this piece of code in your Program..
INITIALIZATION.
PNP-SW-IGNORELOCKEDRECORDS = 'N'.
Regards,
Suresh Datti -
Custom Infotype not displaying locked records in the list screen (3000)
I have a custom infotype (9xxx) that will not display the locked records (locked indicator (sprps) is set to X) in the list screen (3000) in PA20 and PA30.
Any ideas on what may be causing the records to not display in the list screen?
Thanks,
TedHi,
for creating both employee and appliciant infotype you must check 'Both' in PM01 IT tab.
Regards. -
Hi all,
I have a scenario where i have to lock the lookup table records for editing. So that other users cannot edit the record.
I am processing the lock record command for records which are not locked by other session (LOCK_BY_OTHER_SESSION).
Lets say User A lock the records.
I am loging in to the data manager using User B. When i try to edit and save the locked records data manager should warn me with a message like "Record has been locked by other user. would you like to edit anyway?". But i am not getting any warning message.
I doubt the records were not locked by user A.
Is my understanding correct? Am i missing any step here? Please help!
Best regards,
Arun prabhu SFound the answer!
Lock will be lost once the user session destroyed. -
Apart from the lock button problem in iphone 5 the display brightness suddenly goes blank and becomes normal after locking and unlocking the iphone. The Apple service centre in India is denying to service the iphone as it was purchase in USA even though the iphone is in warranty.
iPhones do not have an international warranty. Warranty is valid only for the country of purchase. This is most likely because different countries require different iPhone models. Not reasonable to expect all countries to maintain stock for all models.
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