Regarding locking changes to a ztable

hi guys,
i got a z table and this needs to be locked for changes ( do not maintain entries )in test server and production but it should allow user to maintain entries in development server. i have got 2 roles with me but how do i do this requirement,
Can any one please suggest me regarding this,
Thank you
Pavan kumar Ravikanti

Hi Pavan,
Go thru the following links... thought might help you!!
http://help.sap.com/saphelp_40b/helpdata/es/52/671374439b11d1896f0000e8322d00/content.htm
http://help.sap.com/saphelp_nw04s/helpdata/en/52/67129F439B11D1896F0000E8322D00/frameset.htm
http://help.sap.com/saphelp_nw04/helpdata/en/4d/6d8939fb613f71e10000000a11402f/frameset.htm
also there is means to restrict access to the specified tables by assigning it to a request and then having restrictions over the request. But this is done by the administrators ony.
if you could find a solution let us know!!!
regards,
Naveenan.

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Regarding Lock objects concept

Hi,
   I am interested in knowing what is the significance of Lock objects in SAP.
   Can we co-relate SAP lock objects with Oracle.
    Frnds, I dont need any material i hav enough but i want to know the cocept behind this.
Thanking u all.
regards,
suraj

Hi,
When you create a lock object System automatically creat two function module.
1. ENQUEUE_<Lockobject name>. to insert the object in a queue.
2. DEQUEUE_<Lockobject name>. To remove the object is being queued through above FM.
http://help.sap.com/saphelp_nw04/helpdata/en/cf/21eea5446011d189700000e8322d00/content.htm
GO TO SE11
Select the radio button "Lock object"..
Give the name starts with EZ or EY..
Example: EYTEST
Press Create button..
Give the short description..
Example: Lock object for table ZTABLE..
In the tables tab..Give the table name..
Example: ZTABLE
Save and generate..
Your lock object is now created..You can see the LOCK MODULES..
In the menu ..GOTO -> LOCK MODULES..There you can see the ENQUEUE and DEQUEUE function
Lock objects:
http://www.sap-img.com/abap/type-and-uses-of-lock-objects-in-sap.htm
http://help.sap.com/saphelp_nw04s/helpdata/en/cf/21eea5446011d189700000e8322d00/content.htm
Match Code Objects:
http://help.sap.com/saphelp_nw2004s/helpdata/en/41/f6b237fec48c67e10000009b38f8cf/content.htm
http://searchsap.techtarget.com/tip/0,289483,sid21_gci553386,00.html
See this link:
http://www.sap-img.com/abap/type-and-uses-of-lock-objects-in-sap.htm
Check these links -
lock objects
Lock Objects
Lock Objects
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Hi All,
I have a problem regarding locks. I have designed a report using lock function modules to set locks and release them after the database operations and it works perfectly. There is another report which also does some DB operation on the same table but there are no table locks using enqueue function module implemented in this report and despite of lock set by first report on the table it is able to do the changes on the db table. I need to know how to overcome this problem.
Thanks for your solutions.
Regards,
Sachin

Sachin Dangayach wrote:
Hi All,
>
> I have a problem regarding locks. I have designed a report using lock function modules to set locks and release them after the database operations and it works perfectly. There is another report which also does some DB operation on the same table but there are no table locks using enqueue function module implemented in this report and despite of lock set by first report on the table it is able to do the changes on the db table. I need to know how to overcome this problem.
> Thanks for your solutions.
>
> Regards,
> Sachin
lock procedure requires that all programs involved cooperate. Inconsistencies can occur if a program reads or changes data without having previously locked it. When a lock is set, the data records are only protected against changes by another program if this program also requests a lock before accessing the data.
Please check the above extract from [SAP help|http://help.sap.com/saphelp_nw04/helpdata/en/cf/21eed9446011d189700000e8322d00/frameset.htm], to maintain data consistency, it must be ensured that all the programs should lock the data before changing.
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Lock changed

Hello,
For the auditors I need the answer to the follwing question:
In the list of changes related to users accounts (produced via SUIM) I see the following entry:
User Name Date Time Changed by Action Old Contents of Changed Field Text New Contents of Changed Field Text TCode
TESTACC 05/23/2008 13:55:53 TESTACC Lock Changed 0 Not Locked 128 Incorrect Logon Lock KRNL
Action says: Lock changed, and Text said "Not Locked". Why Text says "Not Locked"?
Thanks
Galina

Silvia,
Thanks for your reply.
Here is the same line in different format where each field has its value next to it. I understand that user was not locked and then got locked due to multiple logins. What I did not understand is why Text said Not Locked. And auditors did not understand this as well.
User Name: TESTACC
Date: 05/23/2008
Time:13:55:53
Changed by: TESTACC
Action: Lock Changed
Old Contents of Changed Field: 0
Text: Not Locked
New Contents of Changed Field: 128
Text: Incorrect Logon Lock
TCode: KRNL
It makes sense now.
Galina

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Dear All,
We have a process chain which contains many meta chains.
Now in each chain i mean meta chain there are attribute change runs
We have desegregated the attribute change run. is tere any method to place a check for attribute change run locks because at the last i have another attribute change run which is failing every day because of the attribute change run is still happenign in some chain.
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Thanks in advance
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Hi Janardhan,
In master data process chain where you have added process of attribute change, just insert a program before this process:
The program is: RSDDS_CHANGERUN_MONITOR
This program will check for any another attr change run running at that time and if there's any other attr change run runnning locking the object which your next attr change run requires then this program will not allow your attr change run to run.
Once all the locks all cleared for attr change run it will trigger the next node.
This program has a do loop which keeps on checking until unless locks are cleared.
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Vij

Doubt regarding Lock

Hi,
I was going thru a doc about locks and I came with a clause...
".....was trying to change the lock mode from 3 to 5........"
what is lock mode 3 and 5??
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S

You should check this link --
http://orafaq.com/node/854
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Lock change of ztransaction while using in migo

hi all,
in general how do we stop change of a document while it is edited in other transaction .
Ex : if PO number is in use while doing MIGO it will stop us editing in ME22n.
i have a similar requirement , we have a modulepool program ZMRN_CREATE, ZMRN_CHANGE jst like ME21n ME22n .
the number generated here is used in MIGO , how can i stop editing or change of MRN number while it is in use in MIGO screen.
Thanks in advance...Pl help in this regard...
Deepak.

Hi Deepak ,
Use this report in your program to lock and unlock your tcode in the background.
use SUBMIT statement in your current module pool.
REPORT Z_LOCK_UNLOCK_TRANSACTIONS
LINE-SIZE 80
MESSAGE-ID 00.
* Program to lock and unlock transactions
* Suvendu Swain
TABLES: TSTC.
DATA: LOCK_TEXT(30).
*SELECTION-SCREEN begin.
SELECT-OPTIONS: S_TCODE FOR TSTC-TCODE OBLIGATORY NO INTERVALS.
PARAMETERS: P_LOCK RADIOBUTTON GROUP A,
P_UNLOCK RADIOBUTTON GROUP A DEFAULT 'X'.
AUTHORITY-CHECK OBJECT 'S_TCODE'
ID 'TCD' FIELD 'SM01'.
IF SY-SUBRC NE 0.
MESSAGE E172 WITH TEXT-010.
STOP.
ENDIF.
IF P_LOCK &H3D 'X'.
LOCK_TEXT &H3D TEXT-008.
ELSE.
LOCK_TEXT &H3D TEXT-009.
ENDIF.
LOOP AT S_TCODE.
CALL FUNCTION 'Z_LOCK_UNLOCK_TRANSACTIONS'
EXPORTING
TCODE &H3D S_TCODE-LOW
LOCK &H3D P_LOCK
UNLOCK &H3D P_UNLOCK
EXCEPTIONS
FAIL_TO_LOCK &H3D 1
FAIL_TO_UNLOCK &H3D 2
INVALID_TCODE &H3D 3
INVALID_OPTIONS &H3D 4
TRANSACTION_ALREADY_LOCKED &H3D 5
TRANSACTION_ALREADY_UNLOCKED &H3D 6
OTHERS &H3D 7.
CASE SY-SUBRC.
WHEN 0.
WRITE:/ TEXT-001, S_TCODE-LOW, LOCK_TEXT.
WHEN 1.
WRITE:/ TEXT-002, S_TCODE-LOW.
WHEN 2.
WRITE:/ TEXT-003, S_TCODE-LOW.
WHEN 3.
WRITE:/ TEXT-004, S_TCODE-LOW.
WHEN 4.
WRITE:/ TEXT-005, S_TCODE-LOW.
WHEN 5.
WRITE:/ TEXT-006, S_TCODE-LOW.
WHEN 6.
WRITE:/ TEXT-007, S_TCODE-LOW.
ENDCASE.
ENDLOOP.
hope this will solve your problem.
cheers,
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Edited by: Suvendu Swain on May 10, 2009 10:27 AM

Regarding Lock Object

Hi Experts,
Can you please guide me how i can find out the lock object name. If i know the table name. is there any table which stores the table name and lock object name for that table.
Or any function module to which i can pass table name in return i can get lock object name.
i have to do all this by coding.
Its very urgect.
Thanks in advance.
AZAD:)

Hi
Lock Objects Tables is: <b>DD25L</b>
Lock objects are use in SAP to avoid the inconsistancy at the time of data is being insert/change into database.
SAP Provide three type of Lock objects.
- Read Lock(Shared Locked)
protects read access to an object. The read lock allows other transactions read access but not write access to
the locked area of the table
- Write Lock(exclusive lock)
protects write access to an object. The write lock allows other transactions neither read nor write access to
the locked area of the table.
- Enhanced write lock (exclusive lock without cumulating)
works like a write lock except that the enhanced write lock also protects from further accesses from the
same transaction.
You can create a lock on a object of SAP thorugh transaction SE11 and enter any meaningful name start with EZ Example EZTEST_LOCK.
Use: you can see in almost all transaction when you are open an object in Change mode SAP could not allow to any other user to open the same object in change mode.
Example: in HR when we are enter a personal number in master data maintainance screen SAP can't allow to any other user to use same personal number for changes.
Technicaly:
When you create a lock object System automatically creat two function module.
1. ENQUEUE_<Lockobject name>. to insert the object in a queue.
2. DEQUEUE_<Lockobject name>. To remove the object is being queued through above FM.
You have to use these function module in your program.
check this link for example.
http://help.sap.com/saphelp_nw04s/helpdata/en/cf/21eea5446011d189700000e8322d00/content.htm
tables:vbak.
call function 'ENQUEUE_EZLOCK3'
exporting
mode_vbak = 'E'
mandt = sy-mandt
vbeln = vbak-vbeln
X_VBELN = ' '
_SCOPE = '2'
_WAIT = ' '
_COLLECT = ' '
EXCEPTIONS
FOREIGN_LOCK = 1
SYSTEM_FAILURE = 2
OTHERS = 3
if sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
endif.
Reward points if useful
Regards
Anji
Message was edited by:
Anji Reddy Vangala

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Hi,
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Hi,
My PL/SQL code is getting locked. The flow is like this.
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Hi Team,
I would like to check if we can alter functions and its actions/permissions in SAP back end and transport it across landscape.
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While creating process chain for master data objects. I am trying to incorporate attribute change run process type for an info object. But the system asks for the DTP of the attribute and when i choose the DTP then both DTP and then Attribute are being incorporated. This is not exactly a problem but i need to understand why it is happening as i am already using that DTP to load data. Will this affect the data in master data object?. Thanks in advance.
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Regarding locking changes to a ztable

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