PARALLEL_FORCE_LOCAL

PARALLEL_FORCE_LOCAL controls parallel execution in an Oracle RAC environment.

Property	Description
Parameter type	Boolean
Default value	false
Modifiable	ALTER SESSION, ALTER SYSTEM
Modifiable in a PDB	Yes
Range of values	true | false
Basic	No

By default, the parallel server processes selected to execute a SQL statement can operate on any or all Oracle RAC nodes in the cluster. By setting PARALLEL_FORCE_LOCAL to true, the parallel server processes are restricted so that they can only operate on the same Oracle RAC node where the query coordinator resides (the node on which the SQL statement was executed).

Note that, regardless of the value of this parameter, parallel server worker processes are spawned across Oracle RAC nodes for queries accessing GV$ views and CDB_* views.

See Also: Oracle AI Database VLDB and Partitioning Guide for more information about this parameter