Answer / lokesh

Lock object is a virtual link of several SAP tables which
is used to synchronize simultaneous access by two users to
the same set of data (SAP lock concept).
[or]
when two users simultaneously attempt to access the
same data record, this is cynchronised by a lock mechanism.


To set the locks,

you must define a lock object in ABAP dictionary. The name
of lock object should start with 'E'.
Thd Fun Modules for requesting and releasing lock which are
create automatically when the lock object is activated must
be linked to the programming of the relevant online
transactions.

They are 3 types:

1) write (exclusive lock)
2) read ( shared lock )
3) exclusive but not cummulative

Function modules :
1)ENQUEUE_FSFLIGHT (to lock the object)
2)DEQUEUE_FSFLIGHT (to unlock the object)

Answer / nageswara reddy s

the purpose of the lock object is to prevent two transaction
changing the same data at the same time that is for the lock
object.
there are three types

1 exclive lock
2 shared lock
3 ecclive but not cumulative

Domain-use?

4 Answers   HCL,

---

Explain get pernr concept when we use logical data base? : abap hr

0 Answers  

---

In selection screen, I have three fields, plant material number and material group. If I input plant how do I get the material number and material group based on plantdynamically?

0 Answers  

---

What is pseudo comment (#EC) and How it is different from normal comments(i.e. '*' and '"')

1 Answers   TCS,

---

When the get cursor command used in interactive lists?

0 Answers  

---

What are the output type and Tcodes?

1 Answers  

---

What are text elements in smartforms ?

1 Answers   TCS,

---

What is the structure of a BDC sessions.

1 Answers  

---

What is get cursor field?

0 Answers  

---

From Excel to ABAP - Is batch mode possible ?

0 Answers  

---

I have 10 records in flat file. In that 7th record is error record. I want to update to data base. If i used Call transaction method what about 7 record and what about 8,9,10 records. If i used Session method what happen. Is it updated or stop at 7th record?

2 Answers   HCL,

---

what are version management functions?

1 Answers  

---