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Background documentation Phantom Locate the document in its SAP Library structure

One of the phenomena that can occur during processing of concurrent transactions is the phantom phenomenon.

A transaction T1 executes an SQL statement S that reads a set M of rows that fulfill a search condition. A transaction T2 then uses the insert statement or the update statement to create at least one additional row that satisfies the search condition. If S is subsequently re-executed within T1, the set of read rows will differ from M.

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