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Oracle Data Warehouse Tuning for 10g
book

Oracle Data Warehouse Tuning for 10g

by Gavin JT Powell
April 2011
Intermediate to advanced content levelIntermediate to advanced
504 pages
16h 49m
English
Digital Press
Content preview from Oracle Data Warehouse Tuning for 10g
14.2 Tuning Hardware Resources for Data Warehousing 401
Chapter 14
file size. In addition, recall that the redo log buffer is flushed or written to
the current redo log file whenever a COMMIT or ROLLBACK is issued;
the redo log buffer is partially filled to one-third full every three seconds or
if the redo log reaches 1Mb.
Note: A checkpoint is a process of flushing dirty buffers from database
buffer cache to disk storage. The redo log buffer is not flushed to disk when
a checkpoint occurs. This is the consensus of opinion from a number of
DBAs, and contrary to many Oracle software texts.
So how does the size of the log buffer affect the redo log files?
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Publisher Resources

ISBN: 9781555583354