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
Regards,
Priyanka.

Similar Messages

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: DD25L
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

Need help regarding Value Object Concept in flex/java

I need to map the java objects to flex use value objects in flex.
The problem is I have a class in java which is referring to another class and again that class referring another class.
For instance
Class A
protected User user;
Class User
protected Address address;
Now I need to map class A to the flex using value object concept and I have to display the user info in the grid as well.
Need some help to get started.

You need to set the "scope" property in your remoting destination definition to "session" or "application".

Regarding lock objects

Hi,
How can we know that lock objects has been created for table or particular records..
Naveen M.

Hi Naveen Kumar,
Lock Objects usually begin with the letter 'E' -
> For Eg. EZLOCK
When a lock is created or released it does with the help of some function module.
Usually when the Lock object is created, a Funtion Module is automatically created which starts with ENQUEUE
when the Lock object is realeased, a Funtion Module is created which starts with DEQUEUE.
For eg. Create a lock object EZLOCK on some ZJK_EKKO table.
Once its activated, go to se37 and check for function module ENQUEUE_EZLOCK.
Once v delete this lock object the function module ENQUEUE_EZLOCK is also deleted .
To Go se84-->ABAP Dictionary > Lock Objects> Give the lock object name.
usually the lock object wil have the table name in it.
So if its MARA Table , Search MARA in Lock object name and it ll list out the
Lock objects and its tables.
Edited by: Jk on Jul 7, 2009 8:43 AM

Questions regarding Lock Objects.

I am creating a custom table and I want to implement a unique ID for my table and I want to use the technique of auto-increment. I created a seperate table where to store the increments to be used as IDs. So basically, when a new data is going to be saved on my other table, the program will query the next "id" from the table for increments. I have to make sure that the updating and reading of the data from the table is accessed one at a time to rule out the possibility that there will be no duplicate IDs generated.
I have read about shared locks and exclusive locks which would serve as a solution for my purpose. The question is: is it possible for other users to "read" from a table if it is currently in an "exclusive lock" by another user?

>
it2051229 wrote:
> I am creating a custom table and I want to implement a unique ID for my table and I want to use the technique of auto-increment. I created a seperate table where to store the increments to be used as IDs. So basically, when a new data is going to be saved on my other table, the program will query the next "id" from the table for increments. I have to make sure that the updating and reading of the data from the table is accessed one at a time to rule out the possibility that there will be no duplicate IDs generated.
>
> I have read about shared locks and exclusive locks which would serve as a solution for my purpose. The question is: is it possible for other users to "read" from a table if it is currently in an "exclusive lock" by another user?
No it isn't.
When you've selected your current value with SELECT FOR UPDATE (to get the exclusive lock) then every other reader will have to wait.
But is this really what you want?
Putting locks on something like an increasing number that is just used for an internal ID?
This will do nothing but turn your multiuser database application into a one-by-one slowness.
Instead, check the documentation about SEQUENCES.
These database objects were made for this. Lockfree increasing (or decreasing) numbers for unique ID columns.
Easy to use. Safe to use.
In 99.9% of all cases this is what you should use.
regards,
Lars

Lock Object Concept required

Hi Everybody,
I have a quary. I have created a custom table which will be used to store master data entered by multiple Users through a module pool program. The program has following functionalities stated below:
CREATE : Entry of new data.
CHANGE: Changing of existing record.
DELETE: Delete existing record
I need to implement lock system inside the module pool program while performing the above operations. In CHANGE and DELETE mode I have implemented record lock system. But in case of CREATE mode which lock mode should I use, ie should I use whole table lock or particular record lock? agerly waiting for reply.
Regards,
Pulokesh

please find below links will be helpfull.
http://help.sap.com/saphelp_nw70/helpdata/en/cf/21eea5446011d189700000e8322d00/content.htm
http://help.sap.com/saphelp_nw70/helpdata/en/af/22ab01dd0b11d1952000a0c929b3c3/content.htm
http://help.sap.com/saphelp_nw70/helpdata/en/cf/21eef3446011d189700000e8322d00/content.htm
http://help.sap.com/saphelp_nw70/helpdata/en/cf/21ef0d446011d189700000e8322d00/content.htm

Let me know creation of lock object

let me know creation of lock object

Hi
Lock Objects
Lock object concept
Lock modes
Creating a lock object (example)
Lock object sample code
SAP data dictionary provides you with a locking mechanism to synchronize simultaneous data access by different users.
Lock objects are created in SE11.
Customer lock objects must begin with EY or EZ .
Three possible lock modes exist for lock objects.
Lock Mode
Lock mode E: This sets a lock for changing data for single user. This lock can be accumulated.
Lock mode X: This mode is used like mode E for changing data. The only technical difference from mode E is that the respective lock does not allow accumulation.
Lock mode S: This mode ensures that data displayed in your program cannot be changed by other users during the entire display time. Here you do not want to change the data yourself (allows read only access for data).
Creating Lock object
SE11
1)Enter lock object name beginning with EY or EZ
and hit create.
2)Enter table names containing data records that should be locked and the lock mode.
Enter short text /tbale/lockmode.
3) The primary keys of the specified tables are automatically selected as lock parameters.
It automatically selects the primary key for the selected table.
To set a lock in the application program
call a function module ENQUEUE_<LOCK_OBJECT>.
For our example, it would be ENQUEUE_EZMARA.
To release the lock in the application program
call a function module DEQUEUE_<LOCK_OBJECT>.
For our example, it would be DEQUEUE_EZMARA.
Refer the code executed by user (say abap1) for
matnr = 000000000000000012.
Lock Objects are used to synchronize access to the same data by more than one user. Function modules that can be used in application programs are generated from the definition of a lock object in the ABAP Dictionary.
The R/3 System synchronizes simultaneous access of several users to the same data records with a lock mechanism. When interactive transactions are programmed, locks are set and released by calling function modules .These function modules are automatically generated from the definition of lock objects in the ABAP Dictionary.
Structure of a Lock Object
The tables in which data records should be locked with a lock request are defined in a lock object together with their key fields.
When tables are selected, one table (the primary table) is first selected. Further tables (secondary tables) can also be added using foreign key relationships.
Lock Arguments
The lock argument of a table in the lock object consists of the key fields of the table.
The lock argument fields of a lock object are used as input parameters in the function modules for setting and removing locks generated from the lock object definition. When these function modules are called, the table rows to be locked or
unlocked are specified by defining certain values in these fields.These values can also be generic. The lock argument fields therefore define which subset of the table rows should be locked
Data Dictionary/ Lock Objects
The simplest case of a lock object consists of exactly one table and the lock argument of the table is the primary key of this table. Several tables can also be included in a lock object. A lock request therefore can lock an entire logical
object, and not only a record of a table. Such a logical object can be for example a document comprising an entry in a header table and N entries in a positiontable.
Lock Mode
The lock mode controls whether several users can access data records at the same time. The lock mode can be assigned separately for each table in the lock object. When the lock is set, the corresponding lock entry is stored in the
lock table of the system for each table. Access by more than one user can be synchronized in the
following ways:
Exclusive lock: The locked data can only be displayed or
edited by a single user. A request for another exclusive lock
or for a
shared lock is rejected.
Shared lock: More than one user can access the locked data
at the same time in display mode. A request for another
shared lock is accepted, even if it comes from another user. An exclusive lock
is rejected. Exclusive but not cumulative: Exclusive locks can be requested
several times from the same transaction and are processed
successively. In contrast, exclusive but not cumulative locks
can be called only once from the same transaction. All other
lock requests are rejected.
1) Select object type Lock object in the initial screen of the ABAP Dictionary, enter an object name and choose Create. The name of a lock object should begin with an E (Enqueue).The maintenance screen for lock objects is displayed.
2) Enter an explanatory short text in the field Short text. You can then use the short text to find the lock object at a later time, for example with the R/3 Repository Information System.
3) Enter the name of the primary table of the lock object. All other tables in the lock object must be linked with the primary table using foreign keys.
4) Select the lock mode of the primary table in the field below it The lock mode is used as the default value for the corresponding parameters of the function modules generated from the lock object.
5) Choose Add if you want to lock records in more than one
table with the lock object. A list of all the tables linked with the primary table using valid foreign keys is displayed. Select the appropriate table. The lock
mode of the primary table is copied as lock mode. You can change this setting as required, for example you can assign the lock mode separately for each table.
Similarly, you can add a table linked with the secondary table just added with foreign keys. To do this, place the cursor on the name of the secondary table and choose Add.
If no lock mode is assigned to a table, no lock is set for the
entries in this table when the generated function modules are
called. You should not assign a lock mode if a secondary table
was only used to define a path between the primary table and
another secondary table with foreign keys.
6) Save your entries.
A dialog box appears in which you have to assign the lock
object a development class.
7) You can define whether the function modules generated from
the lock object should be RFC-enabled on the Attributes tab
page. If you set the Allow RFC flag, the generated function
modules can be called from within another system with Remote
Function Call. If you permit Remote Function Calls for an
existing lock object, you must ensure that the generated
function modules are called from within an ABAP program with
parameters appropriate for the type. You should therefore check
all programs that use the associated function modules before
activating the lock object with the new option.
8) Choose Activate
Reward if u sefull

With regard to lock object and authority check

hi all
i would like to know about lock object and authority check specifically in reports. there is a coding in sap library with regard to authority check, but there is no coding to restrict user (i mean there is no user names that the object is restricting for a particular user or any user has got permission to change or display object).
further, the code mentions that you need an authorization in your user master record for the object, could any of u explain where is user master record.
below is the code for authority check.
*& Module USER_COMMAND_0100 INPUT
MODULE USER_COMMAND_0100 INPUT.
CASE OK_CODE.
 WHEN 'SHOW'.
 AUTHORITY-CHECK OBJECT 'S_CARRID'
ID 'CARRID' FIELD '*'
ID 'ACTVT' FIELD '03'.
 IF SY-SUBRC NE 0. MESSAGE E009. ENDIF.
 MODE = CON_SHOW.
 SELECT SINGLE * FROM SPFLI
 WHERE CARRID = SPFLI-CARRID
 AND CONNID = SPFLI-CONNID.
 IF SY-SUBRC NE 0.
MESSAGE E005 WITH SPFLI-CARRID SPFLI-CONNID.
 ENDIF.
 CLEAR OK_CODE.
 SET SCREEN 200.
 WHEN 'CHNG'.
 AUTHORITY-CHECK OBJECT 'S_CARRID'
ID 'CARRID' FIELD '*'
ID 'ACTVT' FIELD '02'.
 IF SY-SUBRC NE 0. MESSAGE E010. ENDIF.
 MODE = CON_CHANGE.
 SELECT SINGLE * FROM SPFLI
 WHERE CARRID = SPFLI-CARRID
 AND CONNID = SPFLI-CONNID.
 IF SY-SUBRC NE 0.
 MESSAGE E005 WITH SPFLI-CARRID SPFLI-CONNID.
 ENDIF.
 OLD_SPFLI = SPFLI.
 CLEAR OK_CODE.
 SET SCREEN 200.
ENDCASE.
ENDMODULE. " USER_COMMAND_0100 INPUT
i thank u all for the help in advance.

hi
this might help
REPORT YUSRLOCK NO STANDARD PAGE HEADING.
TABLES: TRDIR, USR02.
DATA: MARK,CNTR TYPE I,
 ACCNT LIKE USR02-ACCNT, ERDAT LIKE USR02-ERDAT,
 ANAME LIKE USR02-ANAME, CLI(3) VALUE 'AAA', SZIN TYPE I,
 SYDATUM LIKE SY-DATUM, FLAG(3).
TABLES: UINFO.
DATA: OPCODE TYPE X VALUE 2.
DATA: BEGIN OF USR_TABL OCCURS 10.
 INCLUDE STRUCTURE UINFO.
DATA: END OF USR_TABL.
START-OF-SELECTION.
CALL 'ThUsrInfo' ID 'OPCODE' FIELD OPCODE
 ID 'TAB' FIELD USR_TABL-SYS.
SELECT * FROM USR02 CLIENT SPECIFIED ORDER BY MANDT BNAME.
 IF USR02-MANDT <> CLI.
 SZIN = SZIN + 1. SZIN = SZIN MOD 2.
 CLI = USR02-MANDT.
 ENDIF.
 IF USR02-UFLAG = 0.
 MARK = ' '.
 ELSE.
 MARK = 'X'.
 ENDIF.
 CLEAR FLAG.
 LOOP AT USR_TABL.
 IF USR_TABL-BNAME = USR02-BNAME AND USR_TABL-MANDT = USR02-MANDT.
 FLAG = '!!!'.
 ENDIF.
 ENDLOOP.
 SYDATUM = SY-DATUM - 30.
 IF SYDATUM < USR02-TRDAT.
 IF SZIN = 0.
 WRITE:/ ' ', MARK AS CHECKBOX,' ', USR02-BNAME COLOR 2,
 ' ',USR02-MANDT COLOR 2,
 ' ',USR02-USTYP COLOR 2,
 ' ',USR02-TRDAT COLOR 2, USR02-LTIME COLOR 2,
 ' ',FLAG COLOR 6.
 ELSE.
 WRITE:/ ' ', MARK AS CHECKBOX,' ', USR02-BNAME COLOR 3,
 ' ',USR02-MANDT COLOR 2,
 ' ',USR02-USTYP COLOR 2,
 ' ',USR02-TRDAT COLOR 2, USR02-LTIME COLOR 2,
 ' ',FLAG COLOR 6.
 ENDIF.
 ELSE.
 IF SZIN = 0.
 WRITE:/ ' ', MARK AS CHECKBOX,' ', USR02-BNAME COLOR 2,
 ' ',USR02-MANDT COLOR 2,
 ' ',USR02-USTYP COLOR 2,
 ' ',USR02-TRDAT COLOR 4, USR02-LTIME COLOR 4,
 ' ',FLAG COLOR 6.
 ELSE.
 WRITE:/ ' ', MARK AS CHECKBOX,' ', USR02-BNAME COLOR 3,
 ' ',USR02-MANDT COLOR 2,
 ' ',USR02-USTYP COLOR 2,
 ' ',USR02-TRDAT COLOR 4, USR02-LTIME COLOR 4,
 ' ',FLAG COLOR 6.
 ENDIF.
 ENDIF.
 HIDE: USR02-BNAME, USR02-MANDT.
ENDSELECT.
CLEAR USR02.
TOP-OF-PAGE.
WRITE:/ 'LOCK USER CLIENT TYPE LAST lOGIN ' COLOR 6.
SKIP.
AT USER-COMMAND.
IF SY-UCOMM = 'SEL'.
 DO.
 CLEAR MARK.
 READ LINE SY-INDEX FIELD VALUE MARK.
 IF SY-SUBRC NE 0. EXIT. ENDIF.
 IF USR02-BNAME IS INITIAL.CONTINUE.ENDIF.
 SELECT SINGLE * FROM USR02 CLIENT SPECIFIED WHERE
 MANDT = USR02-MANDT AND BNAME = USR02-BNAME.
 IF MARK = 'X' AND USR02-UFLAG = 0.
 USR02-UFLAG = 64.
 UPDATE USR02 CLIENT SPECIFIED SET: UFLAG = 64 WHERE
 MANDT = USR02-MANDT AND
 BNAME = USR02-BNAME.
 COMMIT WORK.
 ENDIF.
 IF MARK = ' ' AND USR02-UFLAG = 64.
 USR02-UFLAG = 0.
 UPDATE USR02 CLIENT SPECIFIED SET: UFLAG = 0 WHERE
 MANDT = USR02-MANDT AND
 BNAME = USR02-BNAME.
 COMMIT WORK.
 ENDIF.
 ENDDO.
 CLEAR USR02.
ENDIF.
regards
Arun

Re: lock objects

Hi,
Iam implementing some screens. I created some lock objects. I could not able to under these concepts. Even though I studied some documents, i could not get the below concepts. can anybody explain.
1. what is the enqueue mode
2. what is the scope
3.what is the wait parametrs
rgds
p.kp

Hi paluri,
Info taken from standard sap help.
1. Enqueu Mode.
The lock mode controls whether several users can access data records at the same time. The lock mode can be assigned separately for each table in the lock object. When the lock is set, the corresponding lock entry is stored in the lock table of the system for each table.
Access by more than one user can be synchronized in the following ways:
Exclusive lock: The locked data can only be displayed or edited by a single user. A request for another exclusive lock or for a shared lock is rejected.
Shared lock: More than one user can access the locked data at the same time in display mode. A request for another shared lock is accepted, even if it comes from another user. An exclusive lock is rejected.
Exclusive but not cumulative: Exclusive locks can be requested several times from the same transaction and are processed successively. In contrast, exclusive but not cumulative locks can be called only once from the same transaction. All other lock requests are rejected.
2. Scope
Parameter _SCOPE controls how the lock or lock release is passed to the update program (see The Owner Concept for Locks). You have the following options:
_SCOPE = 1: Locks and lock releases are not passed to the update program. The lock is removed when the transaction is ended.
_SCOPE = 2: The lock or lock release is passed to the update program. The update program is responsible for removing the lock. The interactive program with which the lock was requested no longer has an influence on the lock behavior. This is the standard setting for the ENQUEUE function module.
_SCOPE = 3: The lock or lock release is also passed to the update program. The lock must be removed in both the interactive program and in the update program. This is the standard setting for the DEQUEUE function module.
3. WAIT
The ENQUEUE function module also has the parameter _WAIT. This parameter determines the lock behavior when there is a lock conflict.
You have the following options:
Initial value: If a lock attempt fails because there is a competing lock, the exception FOREIGN_LOCK is triggered.
X : If a lock attempt fails because there is a competing lock, the lock attempt is repeated after waiting for a certain time. The exception FOREIGN_LOCK is triggered only if a certain time limit has elapsed since the first lock attempt. The waiting time and the time limit are defined by profile parameters.
regards,
amit m.

Error while lock object creation

Hi
When I tried to create a lock object, I get the following error.
Error: "Total length of lock argument for table XXXXXXXXX longer than 150"
I have 3 tables in which Table1 is the check table for the value tables (Table2 & Table3). During the process of deletion of a record from Table1 (CT) I need the lock tobe established on value tables and then I delete all the corresponding entries in value tables are also deleted.
Would like to know If there is any other std ways of doing this ? and
Solution to overcome the error.
Regards
Karthick

Hi,
I think the error is becoz you have given too many LOCK parameters in the lock object. the total length of the PARAMTERS of lock object should not exceed 150.
By default all the KEY fields will be taken as Lock paramters, so your table key's length is more than 150.
Also why dont you create 3 lock objects for each table and then use only KEY's of each table as LOCK PARAMETERS.
Then Lock T1 record first then lock T2 and T3 records, then delete records from T2 and T3.
Then you delete T1 record.
The execute DEQUEUE_ALL.
Regards,
Sesh

Report to find Locked objects in sap system

Hi All,
does anyone know the report to find out the locked objects in an sap system?
or
name of the table that stores locked objects ?
or any other way through which we can find the number of locked objects ?
Thanks and regards
Abdul Hadi

Hi,
You can unlock locked objects in transaction SE03.
Click on Display Repaired objects.
You can see all the objects that are locked.
To unlock you can select the particular object and click on Unlock.
Do reward points if the answer to your question is met.
Regards
Suhas

Create lock object with fun command

Hallo,
Is it possible to create a lock object with the fun command? I tried to use:
FUN ( ENQUEUE _<lockobject> , <interface> ).
When I fill the importing parameters, execute the script and afterwards refresh the interace than the import parameters are empty. Is there a way to create a lock object with the fun command or at least with inline abap?
regards,
Wolfgang

Hi Wolfgang,
in general your way of including the FUN command was correct.
The loss of import parameter values must have been caused by some other reason, not related to the invoke of enqueue. Maybe try it again.
If, for any reason, using FUN is not possible, it's always an alternative to use ABAP. .... ENDABAP. with correct ABAP coding inbetween (e.g. CALL FUNCTION ...).
Nevertheless regarding enqueue you need to consider, that the lock you set by running eCATT test scripts in this way, will last (only) as long as the session in which the function was called is active. Means, it lasts as long as you do not close the SECATT transaction (/n or similar) and not use commands like RESCON in your test script. Check your locks with transaction sm12.
Be aware, that interfering with an applications lock handling and strategy might also harm running transactions or the data processed by this transactions. Usually there is no need to call the enqueue modules from a test.
Best Regards
Jens

Help in lock object

HI All
i am want to handle lock object for instance if i want to lock some object and it's already locked i want to do some loop on it for 5 times .
1. i need to know if what i was doing is OK since this is my first time .
2. what should i use i parameter wait can it help me ?
Kind Regards
Chris
iv_try_x_times = 5. "this value on the method signature
DO iv_try_x_times TIMES.
 lv_count = lv_count + 1.
 CALL FUNCTION ENQUEUE_USR_DATA
 EXPORTING
 mandt = sy-mandt
 userid = mv_userid
 x_for_user = iv_is_exact
 _wait = iv_is_wait
EXCEPTIONS
 foreign_lock = 1
 system_failure = 2
 OTHERS = 3.
 IF sy-subrc = 0.
 RETURN.
 ENDIF.
 IF lv_count < iv_try_x_times.
 WAIT UP TO 1 SECONDS.
 ENDIF.
ENDDO

Hi Chris,
Such a code piece might help you;
data: is_locked type c,
 lv_counter type i.
is_locked = ''.
lv_counter = 0.
while is_locked = '' and lv_counter < 5.
lv_counter = lv_counter + 1.
 CALL FUNCTION ENQUEUE_USR_DATA
 EXPORTING
 mandt = sy-mandt
 userid = mv_userid
 x_for_user = iv_is_exact
 _wait = iv_is_wait
EXCEPTIONS
 foreign_lock = 1
 system_failure = 2
 OTHERS = 3.
 IF sy-subrc = 0.
 is_locked = 'X'.
 else.
 wait up to 1 seconds.
 endif.
endwhile.
Regards;
Ozcan.

Enqueue: Elem.lock 0 contains unpermitted lock mode . lock object EZBEV_BO

Hello Guru's,
we have a unusual problem in the syslog of our ERP System.
Enqueue: Elem.lock 0 contains unpermitted lock mode . lock object EZBEV_BO
We can't found any note or forum entry to solve this.
We checked SAP Notes: 1324099, 891372, 606425, 447242, 1260601 and searched in the forum, but nothing helpful found.
System Data:
ERP 6.0 / NW7.01 with EHP4
SAP Kernel : 701_REL
created on : Jan 18 2010 21:47:07
Kernel Patch number : 77
Source ID : 0.077
DBSL Patch No. : 075
Database
ORACLE 10.2.0.2
Operating System
AIX 5.3
Can someone help?
regards
Chris

developer error

Lock object for Purchase Order

Dear Experts.
I am searching the function module "ENQUEUE_ " , which is for locking & Unlocking
the Purchase order(ekko-ebeln).
Please help me.
Thanks in advance,
Regards,
Rahul.

Hi,
Use the Lock object EMEKKOE to Lock and Unloack the Purchase orders
Use this FM to lock
MM_ENQUEUE_DOCUMENT
This is also used in the standard program. While enqueing,
if there is any error (sy-subrc 0), then it means,
that particular purchase order is already locked
Use Fm DEQUEUE_ALL to release all lock at the end of report execution.
Regards,
Shamma
Edited by: Shamma Firdous on Aug 20, 2009 10:22 AM

Regarding Lock objects concept

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