17.4 Determining the size of the data directory RDAREA

The following formula is used to determine the size of the data directory RDAREA.

Formula
Size of data directory RDAREA (bytes)
e f
={[Figure]([Figure] gi + [Figure] pj + 86) [Figure] 3000 [Figure][Figure] 51 + 6 [Figure] n + 1 }1[Figure] 40962
i=1 j=1
gi= [Figure](5 [Figure] ai + 2 [Figure] bi + 2 [Figure] ci + 48) [Figure] 32 [Figure]
pj= [Figure](dj + 12) [Figure] 16 [Figure]
ai: Number of columns constituting indexes
bi: Number of RDAREAs storing indexes
ci: Number of RDAREAs storing tables for which an index is defined
dj: Number of RDAREAs storing tables
e: Total number of indexes to be defined
f: Total number of tables to be partitioned
n: Number of HiRDB files that constitute the data directory RDAREA
1 Indicates the total number of pages in the data directory RDAREA.
2 Indicates the page length of the data directory RDAREA.