1. Database Reference
  2. Initialization Parameters
  3. Initialization Parameters
  4. HASH_AREA_SIZE

1.126 HASH_AREA_SIZE

HASH_AREA_SIZE specifies the maximum amount of memory, in bytes, to be used for hash joins.

Property Description

Parameter type

Integer

Default value

Derived: 2 * SORT_AREA_SIZE

Modifiable

ALTER SESSION

Modifiable in a PDB

No

Range of values

0 to operating system-dependent

Basic

No

Note:

Oracle does not recommend using the HASH_AREA_SIZE parameter unless the instance is configured with the shared server option. Oracle recommends that you enable automatic sizing of SQL working areas by setting PGA_AGGREGATE_TARGET instead. HASH_AREA_SIZE is retained for backward compatibility.

HASH_AREA_SIZE is relevant to parallel execution operations and to the query portion of DML or DDL statements.

See Also: