Question about lock

Hi all,
I would like to know what table/object is locked during a goods movement?
And also, can I lock a batch? If yes, what FM can I used to check whether a batch is being locked or not?
Thanks in advance.

Hi,
If you want to check lock entries for the table, just go to tcode SM12, it will show user level.
Regards,
CS

Similar Messages

A string of question about Locking & Isolation Level

Hi All
It is highly appreciated if someone give offer answers to my below questions
1) There are two ways of locking mechanism: Pessimistic & Optimistic. In general, do all J2EE app server support all these two ways of locking ?
2) It seems to me that setting the isolation level to "serialization" should result in using pessmistic locking. If no so, please point out my misconcept and explain to me.
3) Are there any differences in the way of entity bean programming as different locking mechansim is adopted ?
4) With regard to optimistic locking, will the app server throw out exception as data contention is detected ? Is the way of handling dependent on app server? Or It is transparent to the developer of entity bean. Please give me an e.g of j2ee app server product how to handle this scenario.
5) To adopt the approach of "optimistic" locking, do l have to implement it on my own using bean managed entity bean.
6) It seems to me that optimistic locking can achieve better concurrency. If it is inherently supported by app server for its container managed entity bean (=> totally transparent to the developer of entity bean). Is it always the rule of thumb to config the server to use "optimistic" locking instead of "pessimistic" ?
Sorry for bombarding you guys with such long list of questions. l would be very thankful if someone can help me consolidate my concept on these topics.
Also, please send your reply to [email protected] as well
thanks & regards
Danny

Hi Danny,
I became interested about the optimistic locking recently. If the topic is not long forgotten then this may make some difference!
We have attacked the optimistic locking issue by introducing audit fields (MODIFY_BY_USER, MODIFY_DATE) in tables where concurrency needs to be implemented.
We are retrieving rows from the table (for display or update) through Stateless Session Bean using simple SQL SELECT. The audit fields are fetched along with the business data and are kept at the client. While any of the concurrent users tries to update the row the audit fields are sent to the application server along with the modified business data. The relevant Entity Bean checks for any difference in the timestamp of the audit field (MODIFY_DATE) value with the value in the database. If a mismatch is found it reports a business exception to the user. Otherwise, the row is updated with the lastest timestamp value in the audit field MODIFY_DATE.
This works fine when two update operations are not concurrent, i.e., two users submit their update requests in a time lag greater than the time taken by the transaction to complete. This alone could not prevent the dirty update on the database.
Hence, to prevent any concurrent update contending for the same row you need to set the following ejbgen tag in the Entity Bean:
concurrency-strategy = Exclusive<<<<<Note: We are using Weblogic 6.1 with SP4 and CMP (no BMP).
Please let me know if you have got a better solution to tackle this issue.
Chandra.

Question about locking order during merge statement

Dear all.
I have a merge query with a decedent hint to prevent deadlock with another queries.
Another queries use select ~for update with same hint.
My question is that the locking order will follow the hint in this query?
Or I might use the select ~ for update before this merege.
Please give any advice about select ~for update and locking order in the query.
Thanks.
MERGE INTO A
USING
     (SELECT /*+ index_desc(C index_key) */ *
     FROM
         C
      WHERE key > :start and key < :end
    ) B
     ON ( A.KEY = B.KEY )
WHEN MATCHED THEN
     UPDATE
     SET A.v1 = B.v1

What you are doing is not going to prevent a deadlock in your, as yet, unknown version of Oracle. Reading an index does not cause deadlocks. Trying to alter an uncommitted row does.
I would suggest you code this correctly by doing a SELECT FOR UPDATE WAIT <seconds> in all transactions.
http://www.morganslibrary.org/reference/deadlocks.html#dlfu

Two basic questions about locks in Oracle.

Hello,
This is about 9i and onwards.
I need to develop a comprehensive analysis of locks and waits and while doing so, following questions popped up.
1) What is the difference between locks and waits?
2) There is a DBA view called DBA_BLOCKERS. The standard Oracle documentation has only one line comment about this view i.e. "DBA_BLOCKER – Shows non-waiting sessions holding locks being waited-on by other sessions.
My question is : Why would a non waiting session hold locks after all? I guess that automatically repeats the question #1 from above, What is the difference between "being waited on" v/s "holding locks with wait" and "holding locks without waits"?
Thanks,
R

1) What is the difference between locks and waits? Lock - something you queue up to get and simply wait until it is available
Waits - Waiting for a Specific event to happen before it can proceed.
Re: Difference between a latch and a lock
2) There is a DBA view called DBA_BLOCKERS. The standard Oracle documentation has only one line comment about this view i.e. "DBA_BLOCKER – Shows non->waiting sessions holding locks being waited-on by other sessions.DBA_BLOCKERS displays a session if it is not waiting for a locked object but is holding a lock on an object for which another session is waiting.
HTH
-Anantha

Question about locking certain folders w/diff.accounts?

I'm about to let my girlfriend use my Mac, so I made a seperate account for her. I just don't want her going through all of my files and " stuff ". Is there anyway to lock certain folders in my account? I tried using parental controls but didn't find the file I wanted to Lock in the options.

Hi Aaron
When your girlfriend is logged in on her account your folders are locked to her. Your Home folders are only accessible from your account.
Matthew Whiting

HELP! Question about "Locking" ipod

I am an elementary teacher that is trying to get ipods integrated into the school curriculum, school administrators have expressed concerns about students putting inappropriate content onto the ipods, is it possible to "lock" unauthorized editing on an ipod, possibly password protection, or only allowing it to be updated on one cpu?

No, it's not possible to do what you want.
There is a screen lock that locks the iPod so another user can't use it without a code being entered, but this would lock the whole iPod.
There's no way to selectively lock specific content, either adding it or viewing it.

Question about lock switch for smart phones

i would like to ask about the lock switch for smart phones like Nokia 5800 Xpressmusic or Nokia 5230.
Will the lock switch loosen if we always slide to unlock it?

i used my 5800 for 11 months and it didn't happen at all
-you can show appreciation to my posts if it helped or useful by pressing the green Kudo star beside my post that hepled
-if my answer was the solution , so click accept as solution button
Started From Nokia 3310 , Now with Nokia N97 v.22.0.110 + N900 PR1.2

Question about Lock Duration

Hi,
I found a description at this link.
http://help.sap.com/saphelp_nw04/helpdata/en/41/7af4c5a79e11d1950f0000e82de14a/content.htm
'At the end of an SAP LUW, you should release all locks. This either happens automatically during the database update, or explicitly, when you call the corresponding dequeue function module. Locks that are not linked to a database update are released at the end of the SAP transaction'
I don't understand this, because I tested using commit work and wait. The lock entry still there after the statement 'commit' executed. the lock entry disappeared when the whole task completed.
don't know what does happens automatically during the database update. Isn't the 'commit' the case they mentioned?

So does that means even I using a SYNCHRONIZE commit. There still not a database update happen?
From help.sap.com:
For 'commit work' "It triggers a database commit that also terminates the current database LUW and closes all database cursors. "
Database commit <> database update ?

Question about locking down IIS on an SCCM 2012 distribution point on a Windows Server 2003

Hello. My environment is SCCM 2012 SP1. I will be setting up several distribution points on Windows Server 2003 machines. This summer I have a project to configure SCCM to use our PKI infrastructure. Unfortunately, this will not be in place before I need
to set the Windows Server 2003 machines up as distribution points. I am not an IIS expert. When I set the DPs up, I am only 1)Installing IIS, 2)Enabling BITS extensions, and 3)Enabling WebDav. Is there anything I should do to ensure they are as secured as
possible?

I would say that installing Windows Server 2003 is not "as secure as possible" due to it's end of support coming soon.
http://support.microsoft.com/lifecycle/default.aspx?LN=en-us&p1=3198&x=10&y=12
And I would say that we need more information about your scenario to tell you how it is as secure "as possible". Since that would be shutoff at the bottom of the ocean. But that wouldn't be that useful server.
Im guessing that you will run these servers for internal
clients ONLY. And that you have a decent edge protection as well as physical protection. Then I would start by having the lastest secrutiy patches, running antivirus software and having the firewall turned ON. I would make sure that
only necessary logons would be possible and that the servers wouldn't cache any credentials. Typically a DP NEVER holds sensitive data so no real need to secure them more than that in a normal scenario if you ask me.
A final notice, this is a baseline
for a common scenario. You would need to scale and change that
in order to apply for your scenario.
Tim Nilimaa | Blog: http://infoworks.tv | Twitter: @timnilimaa

Questions about authorizations of tables/change requests/badis/locks/lang

Hi ,
Few questions I have not been able to find out .
1) HOw can we ensure that every time we do any change in a table including adding/changing content a change request is generated .Basically to ensure any changes being done are being stored in a change request .
2)How to give authorizations to/for a database table ?
3)can/how we add water marks in scripts and smartforms ?
4) Can we create and place our own BADIs in SAP standard code?
5)different LOCK types/categories with clear difference (not the standard SAP help please..)
6) tips on handling two table controls on one screen.
7) WHat are the things required if we want to use objects(scripts,texts,smartforms) in different languages ?
8)multilingual scripts ?
9) how to have a search help in module pool without using Process on value request ?
Moderator message - Please - one question per thread and please ask a specific question - post locked
Edited by: Rob Burbank on Dec 3, 2009 4:29 PM

FSKB G/L Account Posting
this transaction is not working

Questions about your new HP Products? HP Expert Day: January 14th, 2015

Thank you for coming to Expert Day! The event has now concluded.
To find out about future events, please visit this page.
On behalf of the Experts, I would like to thank you for coming to the Forum to connect with us. We hope you will return to the boards to share your experiences, both good and bad.
We will be holding more of these Expert Days on different topics in the months to come. We hope to see you then!
If you still have questions to ask, feel free to post them on the Forum – we always have experts online to help you out.
So, what is HP Expert Day?
Expert Day is an online event when HP employees join our Support Forums to answer questions about your HP products. And it’s FREE.
Ok, how do I get started?
It’s easy. Come out to the HP Support Forums, post your question, and wait for a response! We’ll have experts online covering our Notebook boards, Desktop boards, Tablet boards, and Printer and all-in-one boards.
We’ll also be covering the commercial products on the HP Enterprise Business Community. We’ll have experts online covering select boards on the Printing and Digital Imaging and Desktops and Workstations categories.
What if I need more information?
For more information and a complete schedule of previous events, check out this post on the forums.
Is Expert Day an English-only event?
No. This time we’ll have experts and volunteers online across the globe, answering questions on the English, Simplified Chinese, and Korean forums. Here’s the information:
Enterprise Business Forum: January 14th 7:00am to 12:00pm and 6:00pm to 11:00pm Pacific Time
Korean Forum: January 15th 10am to 6pm Korea Time
Simplified Chinese Forum: January 15th 10am to 6pm China Time
Looking forward to seeing you on January 14th!
I am an HP employee.

My HP, purchased in June 2012, died on Saturday. I was working in recently installed Photoshop, walked away from my computer to answer the phone and when I came back the screen was blank. When I turned it on, I got a Windows Error Recovery message. The computer was locked and wouldn't let me move the arrow keys up or down and hitting f8 didn't do anything.
I'm not happy with HP. Any suggestions?

Questions on Locking-- URGENT

Here are my questions on Locking.:
1)
How do I use v$lock to figure out lock details ? Details like
whos has locked,on which table,who else is waiting, and what type
of locking (shared or exlusive ?), since when it is locked.
2)
Why and when exclusive/shared locks are used ? Could you give me
example please ?
3)
Could you tell me significance of v$mystat and v$locked_object ?
4)
Do we have page level locking in Oracle ?
Thanks in advance,
DN

Details about locks : All locks acquired by statements within a transaction are held for the duration of the transaction.
Oracle releases all locks acquired by the statements within a transaction when an explict or implied commit or roll back is executed. Oracle also releases locks acquired after a savepoint when rolling back to the savepoint.
Note: Only transactions not waiting for the previously locked resources can acquire locks on now available resources. Waiting transactions continue to wait until after the original transaction commits or completely rolls back.
1. How do I use v$lock to figure out lock details? Details like
whos has locked,on which table,who else is waiting, and what type
of locking (shared or exlusive ?), since when it is locked.
Better way is to use Oracle OEM. The TYPE column in v$lock shows the type of wait events and we also have the LMODE column (lock mode) and REQUEST columns.
Here is a comprehensive v$lock query by Deepak Baranwal, listing the lock types:
set echo off
col sid form 9999
col id1 form 9999999999
col id2 form 999999999
col lmode head "Lock Held" form a14
col request1 head "Lock Request" form a16
col type head "Lock Type" form a15
col ctime head "Time|Held" form 999999
col block head "No Of |Sessions|Waiting|For This|Lock" form 99999
select sid,
DECODE(TYPE,
'BL','Buffer hash table',
'CF','Control File Transaction',
'CI','Cross Instance Call',
'CS','Control File Schema',
'CU','Bind Enqueue',
'DF','Data File',
'DL','Direct-loader index-creation',
'DM','Mount/startup db primary/secondary instance',
'DR','Distributed Recovery Process',
'DX','Distributed Transaction Entry',
'FI','SGA Open-File Information',
'FS','File Set',
'IN','Instance Number',
'IR','Instance Recovery Serialization',
'IS','Instance State',
'IV','Library Cache InValidation',
'JQ','Job Queue',
'KK','Redo Log "Kick"',
'LS','Log Start/Log Switch',
'MB','Master Buffer hash table',
'MM','Mount Definition',
'MR','Media Recovery',
'PF','Password File',
'PI','Parallel Slaves',
'PR','Process Startup',
'PS','Parallel Slaves Synchronization',
'RE','USE_ROW_ENQUEUE Enforcement',
'RT','Redo Thread',
'RW','Row Wait',
'SC','System Commit Number',
'SH','System Commit Number HWM',
'SM','SMON',
'SQ','Sequence Number',
'SR','Synchronized Replication',
'SS','Sort Segment',
'ST','Space Transaction',
'SV','Sequence Number Value',
'TA','Transaction Recovery',
'TD','DDL enqueue',
'TE','Extend-segment enqueue',
'TM','DML enqueue',
'TS','Temporary Segment',
'TT','Temporary Table',
'TX','Transaction',
'UL','User-defined Lock',
'UN','User Name',
'US','Undo Segment Serialization',
'WL','Being-written redo log instance',
'WS','Write-atomic-log-switch global enqueue',
'XA','Instance Attribute',
'XI','Instance Registration',
decode(substr(TYPE,1,1),
'L','Library Cache ('||substr(TYPE,2,1)||')',
'N','Library Cache Pin ('||substr(TYPE,2,1)||')',
'Q','Row Cache ('||substr(TYPE,2,1)||')',
'????')) TYPE,
id1,id2,
decode(lmode,
0,'None(0)',
1,'Null(1)',
2,'Row Share(2)',
3,'Row Exclu(3)',
4,'Share(4)',
5,'Share Row Ex(5)',
6,'Exclusive(6)') lmode,
decode(request,
0,'None(0)',
1,'Null(1)',
2,'Row Share(2)',
3,'Row Exclu(3)',
4,'Share(4)',
5,'Share Row Ex(5)',
6,'Exclusive(6)') request1,
ctime, block
from
v$lock
where sid>5
and type not in ('MR','RT')
order by decode(request,0,0,2),block,5
2 .Why and when exclusive/shared locks are used ? Could you give me
example please ?
Exclusive Lock Mode : Prevents the associates resource from being shared. This lock mode is obtained to modify data. The first transaction to lock a resource exclusively is the only transaction that can alter the resource until the exclusive lock is released.
Share Lock Mode : Allows the associated resource to be shared, depending on the operations involved. Multiple users reading data can share the data, holding share locks to prevent concurrent access by a writer (who needs an exclusive lock). Several transactions can acquire share locks on the same resource.
Oracle Lock Types
DML locks (data locks)
DDL locks (dictionary locks)
Oracle Internal Locks/Latches
Oracle Distributed Locks
Oracle Parallell Cache Management Locks
3. Could you tell me significance of v$mystat and v$locked_object ?
v$locked_object show the information about Who is locking and what object they locking. This view is similar to v$mystat except that it shows cumulated statistics for all sessions.
4. Do we have page level locking in Oracle ? No
Sachin

Questions about Contracts and New Phones

I've had some questions about how upgrading and adding new lines to a contract works and I haven't been able to find the answers through Google. First some background information: We started this most recent contract in September of 2011 and as such the current contract will end September of 2013. According to the phone information portal, all three of the devices on my account will be eligible for an upgrade this Saturday (May 4th, 2013). My daughters birthday just so happens to coincide with that date and as such we were planning on surprising her by taking her to buy a new phone and we are going to allow our son to upgrade his phone as he has been asking to for a while.
Is there any way of locking/limiting the amount of data allowed for each phone on a shared plan? I'm worried that my daughter will go way over our limit and not pay attention to the point where she will end up costing us a very large amount of money
Does adding a new line require the start of a new contract?
My son was interested in purchasing the "Samsung Galaxy S4" and has noticed that pre-orders for that phone are currently available. Is it possible to pre-order the phone on that date using the upgrade so that the price will be reduced?
If the answer to number 2 is a no, does adding the new line take away the upgrades from other phones or would he be able to go to the store past the release date and upgrade then?
Thanks for taking the time to read through all of this. Any help that I receive will be extremely appreciated.

1. Yes. There is an additional fee per line you wish to do this for. When you add the line you can choose this option and set the data amount it is allowed to use.
2. Yes. Each line is a separate contract with its own expiration date.
3. The contract starts when you sign up for the contract. The amount will be pro-rated on the plan if it is not started until part-way through your billing cycle that is what you are asking. Doing the pre-order just guarantees you the phone in case they sell out.
4. No it will not take any upgrades away as each line has its own termination date. You can move upgrades around between lines though.

A question about authorization of "me29n".

I have a question about authorization of "me29n".
In the screen of me29n, after I choose "cancel release" option, there are several button I can use, such as "delete","lock","unlock" and so on. now I want the "delete" button become unavailable after I choose "cancel release". how can I archive ? Is there any authorization object to use? thanks a lot.

Hello Victor,
It is possible through Transaction code "SHDS".
try to create new variant for it.Also you need to take
ABAP'rs help in this .Try it.All the Best.
Regards,
Manjula.

Few questions about "city explorer"

- I noticed it can tell me where the metro is, but could nokia maps + city explorer tell me what line should i take in the metro and which station i should go out?
- Does it all require data transfering while i'm walking, or can i donwload it all before, where i have wifi? (like nokia map-loader)
- same question about the guides...
Thank's!

You can find most of the answers here - or to links to the answers -
http://help.sap.com/businessobject/product_guides/boexplXI32/en/exp_acc_admin_en.pdf
I haven't used the Explorer accelerated for a long time, but as far as I remember in rsddstat i think you can identify the explorer usage from the user id, but not sure - try and see.
You can also run all your BIA indexes at the same time if you want to, the algorithm takes care of the table locks and switch to other index
Querysnap shot index is a SNAPSHOT of the data at the time of the index - it will never change unless you re-run the query and index it. Regular BWA indexes gets updated when you load data to underlying cubes and run BWA rollups/change runs. The querysnap shot data will not change. I like them if my query output miliions of lines - such as ZCUSTOMER. With query snapshot, you can put all of them to explorer for customer segmentation etc purposes
Cheers
Tansu

Question about lock

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