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Oracle® Database Reference
12c Release 1 (12.1)

E17615-24
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PARALLEL_AUTOMATIC_TUNING

Property Description
Parameter type Boolean
Default value false
Modifiable No
Range of values true | false
Basic No

Note:

The PARALLEL_AUTOMATIC_TUNING parameter is deprecated. It is retained for backward compatibility only.

When 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.