2.13.1 What is centralized management of client definitions?
Each HADB client manages its own client definition separately. However, the client definitions of all HADB clients can be centrally managed on the HADB server. This function is called centralized management of client definitions. If this function is used, because the HADB administrator can centrally manage the client definitions with the HADB server, the administrator of each HADB client does not need to individually manage the client definition.
The following figure compares the cases in which centralized management of client definitions is used and not used.
|
|
![[Figure]](GRAPHICS/F0000049.GIF)
- Explanation
-
If centralized management of client definitions is used, the HADB administrator can add or modify the client definitions of all HADB clients on the HADB server.
Exceptions are the following operands, which must be specified in the client definition on each HADB client:
-
adb_clt_rpc_srv_host
-
adb_clt_rpc_srv_port
-
adb_clt_rpc_con_wait_time
-
adb_clt_rpc_sql_wait_time
- Note
-
The preceding operands specify the information required for connecting to the HADB server. Therefore, they must be specified in the client definition on each HADB client.
-
- ▪ Advantages of using centralized management of client definitions
-
-
The HADB administrator can manage the values of the operands in each client definition. For example, the HADB administrator can change the values of performance-related operands (such as adb_sql_exe_max_rthd_num, which specifies the maximum number of real threads that process SQL statements) based on the results of tuning.
-
If the client-group facility is used for the first time, the adb_clt_group_name operand, which specifies a client group name, must be added to the client definitions of the relevant HADB clients. In this case, the administrator of the HADB client must add the adb_clt_group_name operand. However, if centralized management of client definitions is used, one administrator only has to add the adb_clt_group_name operand to the client definitions on the HADB server. Therefore, the administrator of each HADB client does not need to add the adb_clt_group_name operand to the client definition on each HADB client.
As described before, centralized management of client definitions allows you to change the client definitions more easily and quickly.
-