Oracle Isolation Levels : serializable (316)

tsinglee發表於2007-12-06
Oracle

Serializable transactions see only those changes that were
committed at the time the transaction began, plus those changes
made by the transaction itself through INSERT, UPDATE, and
DELETE statements. Serializable transactions do not experience
nonrepeatable reads or phantoms.

Oracle隔離級別 : 序列化
1. 序列化隔離的事務只能看到事務開始時提交的資料 , 除了事務內部DML語句更改的資料
2. 序列化隔離的事務不會出現不可重複讀取或幻象讀取的現象

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