17.2 Determining the size of synchronization point dump files

Organization of this section
(1) Determining the size of a synchronization point dump file
(2) Determining the number of records in a synchronization point dump file

(1) Determining the size of a synchronization point dump file

The following formula is used to determine the size of a synchronization point dump file.

Formula
Size of synchronization point dump file (bytes)
= Number of records in synchronization point dump file#1 x 4,096#2
#1: See (2) as follows; the obtained value is specified in the -n option of the pdloginit command.
#2: This is the record length of a synchronization point dump file.

(2) Determining the number of records in a synchronization point dump file

ConditionFormula for determining the number of records
HiRDB/Single Server[Figure]{1,520 x (2 x a + 7)} [Figure]4,096[Figure]
+ [Figure] (96 + 112 x c) [Figure] 4,096[Figure] + 3
HiRDB/Parallel ServerFront-end server[Figure](320 x b + 840) x (2 x a + 7) [Figure] 4,096[Figure] + 4
Back-end server[Figure]{1,456 x (2 x d + 7) + 64 x (2 x d + 7) x (b x 4 + f + 2)} [Figure] 4,096[Figure]
+ [Figure](96 + 112 x c) [Figure] 4,096[Figure] + 3
Dictionary server[Figure]{1,456 x (2 x e + 7) + 64 x (2 x e + 7) x (b x 4 + f + 2)} [Figure] 4,096[Figure]
+ [Figure](96 + 112 x c) [Figure] 4,096[Figure] + 3
a: Value of the pd_max_users operand
For multi-front-end servers, value of the pd_max_users operand + 1
b: Number of back-end servers
c: Value of the pd_lck_until_disconnect_cnt operand
d: Value of the pd_max_bes_process operand
e: Value of the pd_max_dic_process operand
f: Number of front-end servers