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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
396 14.2 Tuning Hardware Resources for Data Warehousing
every time a change is made to a file. RAID 1 can cause I/O bottle-
neck problems with respect to high usage areas of disk storage,
namely high usage database objects such as frequently written tables.
On the contrary, read access can be extremely fast, since some highly
sophisticated RAID arrays can read more than one mirror copy of a
file at the same time, allowing for parallel reads. RAID 1 is potentially
appropriate for sequential access for redo logs and index spaces in
OLTP databases and in data warehouses. RAID 1 is not appropriate
for random access of table rows from indexes using ROWID point- ...
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Publisher Resources

ISBN: 9781555583354