|Oracle® Database Reference
11g Release 2 (11.2)
|PDF · Mobi · ePub|
|Range of values||
PARALLEL_AUTOMATIC_TUNINGparameter is deprecated. It is retained for backward compatibility only.
PARALLEL_AUTOMATIC_TUNING is set to
true, Oracle determines the default values for parameters that control parallel execution. In addition to setting this parameter, you must specify the
PARALLEL clause for the target tables in the system. Oracle then tunes all subsequent parallel operations automatically.
If you used parallel execution in a previous release and are now enabling
PARALLEL_AUTOMATIC_TUNING, then you should reduce the amount of memory allocated from the shared pool to account for the decreased demand on that pool. This memory will now be allocated from the large pool, and will be computed automatically if
LARGE_POOL_SIZE is not specified.
As part of the automatic tuning, Oracle will enable the
PARALLEL_ADAPTIVE_MULTI_USER parameter. You can override any of the system-provided defaults if desired.