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Oracle in a Nutshell
book

Oracle in a Nutshell

by Rick Greenwald, David C. Kreines
December 2002
Intermediate to advanced content levelIntermediate to advanced
928 pages
85h 29m
English
O'Reilly Media, Inc.
Content preview from Oracle in a Nutshell

Name

HASH_MULTIBLOCK_IO_COUNT

Synopsis

Value: operating system dependent

Default: 1

Dynamic: ALTER SESSION

Specifies how many sequential blocks a hash join reads and writes in one I/O. When operating in multi-threaded server mode, this parameter is ignored and a value of 1 is used. The maximum value is always less than the operating system’s maximum I/O size expressed as Oracle blocks. This parameter strongly affects performance because it controls the number of partitions into which the input is divided. Obsolete with Oracle9i.

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Publisher Resources

ISBN: 0596003366Errata Page