Enqueue lock object in abap mapping

Hi,
In a idoc to file scenario, i need to garantee a unique target filename for message.
I have a ZXI_I2155 table to mantain a counter by some key fields (cliente, anyo, mes)
So, in an abap mapping I have:
   CALL FUNCTION 'ENQUEUE_EZXI_I2155'
      EXPORTING
        MODE_ZXI_I2155 = 'E'
        MANDT          = SY-MANDT
        keycli         = d_cliente
        anyo           = d_anyo
        mes            = d_mes
        _WAIT          = 'X '
      EXCEPTIONS
        FOREIGN_LOCK   = 1
        SYSTEM_FAILURE = 2
        OTHERS         = 3.
    if sy-subrc = 0.
      select single * from ZXI_I2155 into wa_registro
                      where keycli = d_cliente and anyo = d_anyo and mes = d_mes.
          add 1 to wa_registro-contador.
        modify ZXI_I2155 from wa_registro.
      endif.
      CALL FUNCTION 'DEQUEUE_EZXI_I2155'
        EXPORTING
          MODE_ZXI_I2155 = 'E'
          MANDT          = SY-MANDT
          keycli         = d_cliente
          anyo           = d_anyo
          mes            = d_mes.
    endif.
concatenate 'ART' d_cliente d_mes wa_registro-contador '.XML' into d_fichero.
l_record-namespace = 'http://sap.com/xi/XI/System/File'.
l_record-name = 'FileName'.
l_record-value = d_fichero.
dynamic_configuration->add_record( l_record ).
With a normal situation, this scenario works well, but with a great volume of messages, some duplicate filename appears.
Why?
Thanks, in advance
Carme

Try increasing the "enque/table_size" parameter to allow more IDOCs to be handled/locked at the same time. You can increase the value for this parameter up to 102400 (beyond that can cause performance issues).
Please refer to the notes below for more information about the lock queue overflow and management.
[Note 552289 - FAQ: R/3 Lock management|https://websmp230.sap-ag.de/sap(bD1wdCZjPTAwMQ==)/bc/bsp/spn/sapnotes/index2.htm?numm=552289]
[Note 13907 - System error in the block handler, overflow lock table|https://websmp230.sap-ag.de/sap(bD1wdCZjPTAwMQ==)/bc/bsp/spn/sapnotes/index2.htm?numm=13907]

Similar Messages

Lock objects in Abap

Hi Experts,
What are lock objects in Abap and what are they used for?
Could you give me info.
Regards
Adette

Hi,
Lock objects are used to lock the database table while making the modifications on the database table.
you can create your own lock objects using SE11.
if you create lock objects on any table system will create two function modules.
1.ENQUEUE....
2.DEQUEUE.....
first one is used to lock the table
second one used to removing lock on the table.
lock Table
CALL FUNCTION 'ENQUEUE_E_TABLE'
EXPORTING
tabname = table_name
EXCEPTIONS
foreign_lock = 1
system_failure = 2
OTHERS = 3.
Unlock Table
CALL FUNCTION 'DEQUEUE_E_TABLE'
EXPORTING
tabname = table_name
check this link :
http://help.sap.com/saphelp_40b/helpdata/en/cf/21eea5446011d189700000e8322d00/content.htm
_SCOPE = 1: The lock is not sent to the update program. The lock is removed when the transaction is ended.
_SCOPE = 2: The lock is sent to the update program. The update program is responsible for removing the lock. The dialog program which requested the lock no longer has an influence on the lock behavior. This is the standard setting for the ENQUEUE function module.
_SCOPE = 3: The lock is also sent to the update program. The lock must be removed in both the dialog program and by the update program. This is the standard setting for the ENQUEUE function module.
Regards
Anver

What is the use for lock object and how to use the lock objects

Hi Guru's,
I am new to ABAP .Can you please clarify the that what is the use of lock object and how to use the loct object .what is use of the Deque & Enque function modules .

hi ,
below are some minfo about lock objects :
Lock Objects
These types of objects are used for locking the access to database records in table. This mechanism is used to enforce data integrity that is two users cannot update the same data at the same time. With lock objects you can lock table-field or whole table.
In a system where many users can access the same data, it becomes necessary to control the access to the data. In R/3 system this access control is built-in on database tables. Developers can also lock objects over table records.
To lock an object you need to call standard functions, which are automatically generated while defining the lock object in ABAP/4 dictionary. This locking system is independent of the locking mechanism used by the R/3 system. This mechanism also defines LUW i.e. Logical Unit of Work. Whenever an object is locked, either by in built locking mechanism or by function modules, it creates corresponding entry in global system table i.e. table is locked. The system automatically releases the lock at the end of transaction. The LUW starts when a lock entry is created in the system table and ends when the lock is released.
Creating Lock Objects
Lock object is an aggregated dictionary object and can be defined by using the following steps:
o From initial data dictionary screen, enter the name for the object, Click Lock object radiobutton and then click on Create. The system displays a dialog box for Maintain Lock Objects screen
o Enter short text as usual and the name for primary table.
-Save
-Select Tables option
From this screen you can:
Select secondary tables, if any, linked by foreign key relationship.
Fields for the lock objects. This option allows you to select fields for objects (R/3 system allows locking up to record level). Lock object argument are not selected by user but are imposed by the system and includes all the primary keys for the table.
1) 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.
2) 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.
3) 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.
Also, last but not the least, locking the object is logical (locking with any enqueue ) .so, you have to use the lock object while trying to access from second program .
reward if helpful ,
Regards,
Ranjita

Mapping Issue ( ABAP Mapping ).... Help me out..

hi masters.
i want some help from ur side.
i just jumped to XI domain..
and got object of abap mapping..
can u hep me.. out..
the steps.. required for mapping..
i went through some materials..
still
do u hv any idea..
to clear my doubts..
as
suppose
         input idoc--
                        segment 1
                        segment 2
                                    segment 2.1
                                    segment 2.2
                                                 segment 2.2.1
                                                 segment 2.2.2
                        segment 3
i wnat .....
             a file having record of each segment with its segment name
             using   ABAP code..
10xxxxxxxxxxxx   In advance
Thanks & Rdegards.
Someswar.

Hi Keith,
Look at these..
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/xi/xi-code-samples/xi%20mapping%20lookups%20rfc%20api.pdf
/people/alessandro.guarneri/blog/2006/03/27/sap-xi-lookup-api-the-killer
/people/sravya.talanki2/blog/2005/12/21/use-this-crazy-piece-for-any-rfc-mapping-lookups
cheers,
Prashanth
P.S Please mark helpful answers

ABAP MAPPING TESTING

How can I test an ABAP mapping where the input file is a flat file (fieldfixed length file)?
Kindly give me the detailed steps for doing so.

Hi Biswa,
One of the many disadvantages of using ABAP mapping.
U cannot test in ESR. Unlike Graphical mapping, there will not be any Msg Mapping object in ABAP mapping. Only an operation mapping is there.
The only way to test the interface is End-To-End. I.E. Process the scenario frm picking the file from Application server location and checking the data posted in backend system correctly.
One more way, u can test the mapping program in the ABAP stack by passing on the file as input.
Cheers,
Souvik

Where do I use These lock object FM's (Enqueue & D? and How do I use them?

I created lock object for user defined table (zconsist). The system automatically created 2 FM's (Enquiue & Dequeue).
I created a new TCode and accessing this with mulitple users to do some updates and inserts in that above table.
I used INSERT ZCONSIST statement in 5 places in my program (4 include programs).
Where do I use These FM's? and How do I use them?
I mean before inserting which FM I need to use? after immediately what fm used?.
every insert statemnt before i need to use the respective fm? so 5 places i need to call the respective FM is it right?
thank in advance.

Hi Sekhar,
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.
Normally ABAPers will create the Lock objects, because we know when to lock and how to lock and where to lock the Object then after completing our updations we unlock the Objects in the Tables
http://help.sap.com/saphelp_nw04s/helpdata/en/cf/21eea5446011d189700000e8322d00/content.htm
purpose: If multiple user try to access a database object, inconsistency may occer. To avoid that inconsistency and to let multiple user give the accessibility of the database objects the locking mechanism is used.
Steps: first we create a loc object in se11 . Suppose for a table mara. It will create two functional module.:
1. enque_lockobject
1. deque_lockobject
before updating any table first we lock the table by calling enque_lockobject fm and then after updating we release the lock by deque_lockobject.
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
kindly reward if found helpful.
cheers,
Hema.

About lock object in Dynpro ABAP

Hi Expert,
We develop the Dynpro ABAP program to modify SAP document on EP,
( like Sales Order, Purchase order...ect. ).
In tranditional ABAP program, we use lock object(lock entry) to lock sigle document( SO, PO.. etc. )
In Dynpro ABAP , how to lock the single document ?

You can also use the "ENQUEUE" and "DEQUEUE" function modules to lock records in WDA as well.
Check out the thread [The effect of Session Expiration on Lock Table |The effect of Session Expiration on Lock Table].
Hope it helps.

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: Enqueue and Dequeue

Hi
Im using VB.Net, SAP .Net to do data entry, updates to
SAP R/3.
Now, I need to lock the data during user changes on
particular documents.
What I done is I created a lock object in SE11. Then
it produce 2 functions which are the ENQUEUE and
DEQUEUE.
Since the data reading from Non-SAP, I check for Allow
RFC and my lock mode is Exclusive and Cumulative.
After that, I also created a remote-enabled RFCs to be
call from VB.Net. These RFCs is calling the ENQUEUE
and DEQUEUE.
When I tested in SAP itself, the locking data is
working perfectly. I checked in SM12, it does shows
the locking entry.
But when I try in VB.Net and call the function
modules, it does not shows any entry in SM12. It is
like nothing happen at all.
After that, I do little test. Firstly I lock the data
from SAP then I run VB.Net, and it does shows the
message who is currently locking the data.
Anybody could help me on this?
Thank you.
Regards.

See the following extract from documentation. Check if your lock object definition is satisfying all of them.
Reference Fields for RFC-Enabled Lock Objects
The type of an RFC-enabled function module must be completely defined. The parameters of the generated function module therefore have the following reference fields for RFC-enabled lock objects:
Parameters Reference fields
X_<field name> DDENQ_LIKE-XPARFLAG
_WAIT DDENQ_LIKE-WAITFLAG
_SCOPE DDENQ_LIKE-SCOPE
_SYNCHRON DDENQ_LIKE-SYNCHRON

Here is the link to the documentation
http://help.sap.com/saphelp_46c/helpdata/en/4f/991f82446d11d189700000e8322d00/frameset.htm
Srinivas

Regd using of lock object in an abap program

Hi all,
 i have created an lock object but doesnot know how to use that lock object in an abap program. can anyone guide me how to use lock object in an abap program.

check this sample for Production Order.
* Lock request for order
call function 'ENQUEUE_ESORDER'
exporting
 aufnr = p_aufnr
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.
Regards
Prabhu

[ABAP Mapping] Only with ABAP-Objects?

Hi,
found <a href="http://https://www.sdn.sap.comhttp://www.sdn.sap.comhttp://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/5c46ab90-0201-0010-42bd-9d0302591383">this how-to</a> that describes an ABAP mapping in SAP XI.
Is ABAP mapping only possible with ABAP Objects? Do I have to use
the StreamFactory class? Is there an alternative way to do such a mapping?
Does anyone have another example for ABAP mapping?
Thanks
chris

Hi Christian,
usually you need that only for special cases. It is not so easy...
You can find a simple example at my weblog <a href="/people/udo.martens/blog/2006/08/23/comparing-performance-of-mapping-programs Performance of Mapping Programs</a>. The same mapping is over there with other mapping kinds; as you see, ABAP seems to be most complex, he, he. One or two days, and you get it
frohes Basteln,
Udo

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

Hello All,
SCM 5.0 system which is upgraded from 4.1:
System log entries contains:
Enqueue: Elem.lock 0 contains unpermitted lock mode /. lock object /sapapo/E
Work process log file contains :
LOG GE8===>0 /sapapo/E_MATLOC
I have gone through few notes like 606425, 447242.( lower version)
From which I came to the conclusion that it is program error.
Also group GE and No:8 What does it mean?
Please let me know your thoughts.Thanks.
Regards,
Tushar
Message was edited by:
Tushar Chavan
Message was edited by:
Tushar Chavan

Hi,
I found one more note :
Note 891372 - Lock entries for TemSe obj remain after completion of proc
The issue looks pretty similar. I think the notes you found are better suited for sap apo.
Log a call with SAP and check what they have to say.
Regards,
Siddhesh

How to transport Enqueue and Dequeue Objects / Lock Objects / R3

Hi Gurus,
i have created two lock Objects.
I transported those objects in Q system but the table tab has no objects.
But in Dev every thing is correct.
Could you please indicate how i can get the objects correctly transported?
Thanks

Easy and best approach is by getting them re transported by using transport of copy request (Type of request)
1) Get the Transport of copy request created by basis team / urself under your user.
2) Go to SE10 and highlight the request and click on include objects icon
3) Later in the pop up window select the radio button which mentions "Include free objects"
4) Then in the next screen mention the details based on the attributes of the Enque and deque object or else provide the package name and execute and in the next screen choose the concerned enque and deque objects and include them in the request.
5) Transport the Transport of copy to quality.
Also, more easiest is.
Find out the task of the request with with the enque and deque objects were created with (if more than one select all), and then include the tasks in the transport of copy and transport it to next system
If you are not able to do the above two steps then i think the object is $TMP object, kindly cross check.
Cheers

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

Lock object using RFC

Hi,
in standard transaction I lock an object in an other system using RFC lock(enqueue function) but when I exit from transaction the object in other system is automatically unlocked without using the dequeue function.
Is It the correct behaviour?
Thanks,
Max Boscolo

Hi
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.
Normally ABAPers will create the Lock objects, because we know when to lock and how to lock and where to lock the Object then after completing our updations we unlock the Objects in the Tables
http://help.sap.com/saphelp_nw04s/helpdata/en/cf/21eea5446011d189700000e8322d00/content.htm
purpose: If multiple user try to access a database object, inconsistency may occer. To avoid that inconsistency and to let multiple user give the accessibility of the database objects the locking mechanism is used.
Steps: first we create a loc object in se11 . Suppose for a table mara. It will create two functional module.:
1. enque_lockobject
1. deque_lockobject
before updating any table first we lock the table by calling enque_lockobject fm and then after updating we release the lock by deque_lockobject.
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
Anji

Enqueue lock object in abap mapping

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