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SQL programmingYou can use the HCL OneDB™ implementation of the SQL language to develop applications for HCL OneDB™ database servers.
Guide to SQL: ReferenceThe HCL OneDB™ Guide to SQL: Reference contains the reference information for the system catalog tables, data types, and environment variables of the HCL OneDB™ dialect of the SQL language, as implemented in HCL OneDB™. These topics also include information about the stores_demo, sales_demo, and superstore_demo databases that are included with HCL OneDB™.
Environment variablesVarious environment variables affect the functionality of your HCL OneDB™ products. You can set environment variables that identify your terminal, specify the location of your software and define other parameters.
Environment variables in HCL OneDB™ productsThe topics that follow discuss (in alphabetic order) environment variables that HCL OneDB™ database server products and their utilities use.
ONCONFIG environment variableThe ONCONFIG environment variable specifies the name of the active file, called the onconfig file, which holds the configuration parameters for the database server.

ONCONFIG environment variable

The ONCONFIG environment variable specifies the name of the active file, called the onconfig file, which holds the configuration parameters for the database server.

This file is read as input during the initialization procedure. After you prepare your onconfig configuration file, set the ONCONFIG environment variable to the name of this file.

filename: is the name of your onconfig file in the %INFORMIXDIR%\etc\%ONCONFIG% or $INFORMIXDIR/etc/$ONCONFIG directory
This file contains the configuration parameters for your database.

To prepare the onconfig file, make a copy of the onconfig.std file and modify the copy. Name the onconfig file so that it can easily be related to a specific database server. If you have multiple instances of a database server, each instance must have its own uniquely named onconfig file.

If the ONCONFIG environment variable is not set, the database server reads the configuration values from the onconfig file during initialization.