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Écrit par OCA
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19-03-2008 |
- is responsible for :
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signaling DBWn at checkpoints
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updating datafile headers with checkpoint information
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updating control files with checkpoint information
- in order to :
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ensure that data blocks in memory are written to disk regularly
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reduce the time required for instance recovery (only the part of the online redo logs after the checkpoint
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ensure that committed data has been written to the data files during shutdown
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A checkpoint occurs every 3 seconds. It is the process of storing data
in the control file to identify the place in the online redo log files
where recovery is to begin.
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Dernière mise à jour : ( 15-04-2008 )
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Oracle/Fund1 (English)