on 07-05-2010 10:21 AM
Hi All,
What is different between database lock and sap lock why sap introduced locking mechanism.
Thanks
Santosh
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To ensure data consistency within an SAP system, you must ensure that data
records cannot be accessed and changed by more than one user at any one time.
To do this, the SAP system has its own lock management concept.
Hi Abullais
Thats ok but what is diff. between these two locking mechanism.
From a database perspective, every dialog step forms a physical and logical unit:
the database transaction.. The database lock administration can only coordinate
this type of database transaction. From an SAP point of view, however, this is
not sufficient, because SAP transactions, which are formed from a sequence of
logically related work steps that are consistent in business terms, are generally
made up of several dialog steps. SAP systems need to have their own lock
management. This is implemented using the enqueue work process. This also
ensures that the platform-independence of the lock management is maintained.
Thanku.
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