6.6.5 Environment variables and connection types for HiRDB servers

Table 6-32 shows the relationships among environment variables and connection types for connecting with the HiRDB server.

Table 6-32 Relationships between environment variables and connection types

Environment variableHiRDB/Single ServerHiRDB/Parallel Server
Single front-end serverMultiple front-end servers
NormalHigh-
speed
NormalHigh-
speed
NormalConnection with specific front-end server
FES-host directHigh-
speed
PDHOSTSSSSSSS
PDFESHOST[Figure][Figure][Figure]S[Figure]SS
PDNAMEPORTSSSSSSS
PDSERVICEPORT[Figure]S[Figure]S[Figure][Figure]S
PDSERVICEGRP[Figure]S[Figure]S[Figure]SS
PDSRVTYPE[Figure][Figure][Figure][Figure][Figure][Figure][Figure]

S: Must be specified.

[Figure]: Must be specified if the HiRDB server is the Linux or Windows version.

[Figure]: Does not have to be specified.

Notes
  1. The connection format in which all required environment variables are specified is selected in the priority order of high-speed connection, FES-host direct connection, and normal connection. Unnecessary environment variables are not used.
  2. The following relationships apply to the connection time to the HiRDB server:
    Normal connection time > FES-host direct connection time > high-speed connection time
    A high-speed connection is recommended if you want to shorten the connection time. A normal connection is recommended if you want to use the connected front-end server efficiently.