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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 ReferenceThe HCL OneDB™ Administrator's Reference includes comprehensive descriptions of HCL OneDB™ configuration parameters, the system-monitoring interface (SMI) tables in the sysmaster database, the syntax of database server utilities such as onmode and onstat, logical-log records, disk structures, event alarms, and unnumbered error messages.
Configuring and monitoring HCL OneDB™
Database configuration parametersThe HCL OneDB™ database server uses a configuration file, which is called the onconfig file, during initialization. This file contains default configuration parameter values. You can modify the parameter values to improve performance and other characteristics of the instance or database.
USERMAPPING configuration parameter (UNIX™, Linux™)Use the USERMAPPING configuration parameter to set whether or not the database server accepts connections from mapped users.

USERMAPPING configuration parameter (UNIX, Linux)

Use the USERMAPPING configuration parameter to set whether or not the database server accepts connections from mapped users.

default value

OFF

values

OFF = Only users that are registered in the HCL OneDB™ host computer OS with a login service can connect to the database server. Externally authenticated users without OS accounts on the HCL OneDB host computer cannot connect to database server resources.

BASIC = Users can connect to HCL OneDB without an OS account. A user without an OS account cannot perform privileged user operations on the database server, even if the user maps to a server administrator user or group ID.

ADMIN = Users can connect to HCL OneDB without an OS account. If a user has authenticated with the identity of a privileged user and is mapped to the proper server administrator group ID, the user can perform DBSA, DBSSO, or AAO work on the database server.

takes effect

After you edit your onconfig file and restart the database server.

When you reset the value dynamically in your onconfig file by running the onmode -wf command.

When you reset the value in memory by running the onmode -wm command.

Usage

Externally authenticated users without operating system (OS) accounts on the HCL OneDB host computer can access database server resources when USERMAPPING is turned on by setting the parameter with the BASIC or ADMIN value. The setting of BASIC or ADMIN also determines whether or not mapped users can be granted administrative privileges.

Important: Changing the USERMAPPING configuration parameter from OFF to ADMIN or BASIC is not the only step in setting up HCL OneDB for mapped users. To map users with the appropriate user properties, you must also use DDL statements such as CREATE USER and ALTER USER to register values in appropriate system tables of the SYSUSER database. Depending on the DDL statement used and the defined table mapping, the following tables will be updated or populated:

SYSINTAUTHUSERS
SYSUSERMAP
SYSSURORGATES
SYSSURROGATEGROUPS

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