Use the following formulas to calculate the memory required by in-memory data processing.

Formula

Formula 1 + D 2 (KB)

Formula 1

n {736 + 32 A + 48 + 448 B + 2,048 + C B} 1,024 (KB) i=1

n: Number of in-memory RDAREAs

A: Number of HiRDB files that constitute the in-memory RDAREAs

B: Total number of pages of in-memory RDAREAs

C: Page size of in-memory RDAREAs

D: Value of Formula 2

Formula 2 (number of shared memory segments used by in-memory data buffer)

value of Formula 1 (value of SHMMAX operand 1,024)

Formula 2 calculates the value per RDAREA. Calculate for as many in-memory RDAREAs as there are.

The value found by Formula 2 is used to calculate the pd_max_resident_rdarea_shm_no operand or the operating system parameters.