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AdministeringIn addition to administering the database server, you can tune performance, replicate data, and archive data.
System administrationThese topics contain concepts, procedures, and reference information for database and database server administrators to use for managing and tuning HCL OneDB™ database servers.
Administrator's GuideThe HCL OneDB™ Administrator's Guide provides the information required to administer HCL OneDB™.
The database server
Client/server communicationThese topics explain the concepts and terms that you must understand in order to configure client/server communication.
Distributed Relational Database Architecture™ (DRDA®) communicationsDRDA is a set of protocols that enables multiple database systems and application programs to work together.
Specify the size of the DRDA® communication buffer with the DRDA_COMMBUFFSIZE configuration parameterUse the DRDA_COMMBUFFSIZE configuration parameter to specify the size of the DRDA® communications buffer. The minimum size is 4 KB, the maximum size is 2 megabytes, and the default value is 32 KB.

Specify the size of the DRDA communication buffer with the DRDA_COMMBUFFSIZE configuration parameter

Use the DRDA_COMMBUFFSIZE configuration parameter to specify the size of the DRDA® communications buffer. The minimum size is 4 KB, the maximum size is 2 megabytes, and the default value is 32 KB.

You can specify a one megabyte buffer as 1M, 1m, 1024K, 1024k, or 1024. HCL OneDB™ automatically resets values that are less than 4 KB as 32 KB.

When a DRDA session is established, the session allocates a communication buffer of the current buffer size.

You can use the isgetdrdacommbuffsize() function to return the current value of DRDA_COMMBUFFSIZE.

You cannot use the onmode -wm command to change the setting while the database server is running.