Nonstop Database, HiRDB Version 9 Installation and Design Guide

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16.8 Determining the size of the registry LOB RDAREA

The following formula is used to determine the size of the registry LOB RDAREA.

Formula
Size of registry LOB RDAREA (bytes)
= (total number of pages in the directory page part + total number of pages in the data page part) [Figure] 8,192#

#: Page length of the registry LOB RDAREA
Organization of this section
(1) Total number of pages in the directory page part
(2) Total number of pages of data page part

(1) Total number of pages in the directory page part

Formula
Total number of pages in the directory page part
a
= [Figure]Si [Figure] 64,000[Figure] [Figure] 96 + 7 + 3 [Figure] (a - 1)
i=1
a: Number of HiRDB files that constitute the registry LOB RDAREA
Si: Number of registry LOB RDAREA segments

(2) Total number of pages of data page part

Formula
Total number of pages in the data page part
b
= [Figure](Cj + 1,024) [Figure] 8,192[Figure]
j = 1
b: Number of registry key values that exceed 32,000 bytes
Cj: Length of registry key values that exceed 32,000 bytes

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