Table 20-1 shows the formulas for determining the values of environment variables related to the number of resources. If the obtained value is greater than the default value for the corresponding environment variable, set the obtained value in the environment variable. Otherwise, a problem may result, such as HiRDB cannot be started or a utility cannot be executed.

Table 20-1 Values of environment variables related to the number of resources (HiRDB/Single Server)

Type	Formula	Corresponding environment variable	Default
Number of message queue identifiers	(7 + f) a + 25	PDUXPLMSGMNI	50
Number of message queue tables	MAX(b number of message queue identifiers, total value of pdbuffer with -m specified)	PDUXPLMSGTQL	80
Number of semaphore identifiers	{{2 (b + 3) + 12} 64 + c 64 + g + 5} a + 2 + d	PDUXPLSEMMAX	64
Shared memory usage count	2 e + 16	PDUXPLSHMMAX	4096

a: 1 for a single server

b: Value of the pd_max_users operand

c: Number of pdbuffer operands defined

d: Add when the system switchover facility is being used. Determine the value from the following table:

Condition			Value of d
pd_ha_acttype=monitor (or default)			0
pd_ha_acttype=server	pd_ha_agent=standbyunit		1
	Omit pd_ha_agent	pd_ha_server_process_standby=Y (or default)	1
		pd_ha_server_process_standby=N	0

e: Value of the pd_max_server_process operand

f: 1 (if 1 or greater is specified in the pd_max_ard_process operand) or 0

g: 2 (if a value is specified in the pd_dfw_awt_process operand) or 0