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HASH AREA SIZE is a parameter which set the hash area size of the pga memory.
alter session set hash_area_size = 1024;
It will have no effect if WORKAREA_SIZE_POLICY is set to auto.
Oracle Database - HASH_AREA_SIZE parameter
HASH AREA SIZE is a parameter which set the hash area size of the pga memory.
alter session set hash_area_size = 1024;
It will have no effect if WORKAREA_SIZE_POLICY is set to auto.