2.53 CONTAINERS_PARALLEL_DEGREE

CONTAINERS_PARALLEL_DEGREE can be used to control the degree of parallelism of a query involving containers().

Property Description

Parameter type

Integer

Default value

65535

Modifiable

ALTER SESSION, ALTER SYSTEM

Modifiable in a PDB

Yes

Range of values

Cannot be set to a value lower than 2 or higher than 65535.

Basic

No

Oracle RAC

Different values can be set on different instances.

The value of CONTAINERS_PARALLEL_DEGREE, if set, will override the default DOP for a containers() query.

By default, a containers() query uses a degree of parallelism equal to (1 + number of open PDBs) in the case of CDB root and (1 + number of open application PDBs) in the case of application root.

If the value of CONTAINERS_PARALLEL_DEGREE is lower than 65535, then this value is used as the degree of parallelism of a query involving  containers(). Otherwise (when the value is 65535), the default degree of parallelism is (1 + number of open PDBs) or (1 + number of open application PDBs) as described above.

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