![]() If no update problems exist, you can use this parameter to increase the size of the lock table. In this case, you should check whether the update server is functioning correctly, since the lock table can grow very fast if the update function stops. Only the same lock owner can reset the lock. An exclusive lock set on an object that already has a shared lock will be rejected.Į(Exclusive): An exclusive lock protects the locked object against all types of locks from other transactions. Requests from further shared locks are accepted, even if they are from different users. S (Shared Lock): Several users can access locked data at the same time in display mode. ![]() The lock mode describes what type of lock it is. You have to understand the concepts described here in order to use the SAP locks when you are programming applications. The documentation is divided into the following sections:Ĭoncept: describes how the SAP lock works. The SAP lock entries mechanism is closely related to the Update Mechanism. Lock entries are usually set and deleted automatically when user programs access a data object and release it again. Lock entries are defined generically as “lock objects” in the Data Dictionary. SAP Lock Entries: The SAP system is equipped with a special lock mechanism the purpose of the lock entries mechanism is to prevent two transactions from changing the same data on the database simultaneously.
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