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 Using Log Entries at Restart or Recovery 

During a restart or recovery the log entries are used to reestablish the most recent consistent status of the database instance.

There are two phases to a restart or recovery:

·        Evaluating the Log Information

·        Redoing the Transactions

Both phases include active components (tasks) and passive components (storage units.)

 

Active Components

Passive Components

Evaluating the log information

Redo Log Manager

Log Reader

Redo Log File

Redo List

Redoing transactions

Redo Tasks

 

 

See also:

Example: Restart

 

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