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By default SAP provides locking mechanism if db is being used by a user ,then what is the use of writing enque method in your code?
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Answer / marek
It is used for blocking data base element (for example) for whole process of your report. For example you SELECT some data form db, and before MODIFY or UPDATE statement is a lot of code and it could take a while to execute – the data could be change by other program (or even the same run by other person).
A ways to avoid that is to use ENQUEUE and DEQUEUE items using a proper function module or using SELECT FOR UPDATE statement .
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