When a table is updated, where is the before image information (which can be used for undoing the ch - Rollback segment. Before any DML operation, the undo information (before-image of data) is stored in the rollback segments. This information is used to undo the changes and to provide a read-consistent view of the data.

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Question: When a table is updated, where is the before image information (which can be used for undoing the changes) stored?

Answer: Rollback segment. Before any DML operation, the undo information (before-image of data) is stored in the rollback segments. This information is used to undo the changes and to provide a read-consistent view of the data.

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Question: When a table is updated, where is the before image information (which can be used for undoing the changes) stored?

Answer:

Rollback segment. Before any DML operation, the undo information (before-image of data) is stored in the rollback segments. This information is used to undo the changes and to provide a read-consistent view of the data. Source: CoolInterview.com

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