16.4
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
={
(
gi
+
pj
+ 86)
3,000
x
51 + 6
x
n
+ 1 }
#
1
x
4,096
#
2
i
=1
j
=1
gi
=
(5
x
a
i
+ 2
x
b
i
+ 2
x
c
i
+ 48)
32
pj
=
(
d
j
+ 12)
16
a
i
: Number of columns constituting indexes
b
i
: Number of RDAREAs storing indexes
c
i
: Number of RDAREAs storing tables for which an index is defined
d
j
: 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
.