Using dbservername.cmd to initialize a command-prompt environment
Each time that you open a Windows™ command prompt, it acts as an independent environment. Therefore, environment variables that you set within it are valid only for that particular command-prompt instance.
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For example, if you open one command window and set the variable, INFORMIXDIR, and then open another command window and type set to check your environment, you will find that INFORMIXDIR is not set in the new command-prompt session.
The database server installation program creates a batch file that you can use to configure command-prompt utilities, ensuring that your command-prompt environment is initialized correctly each time that you run a command-prompt session. The batch file, dbservername.cmd, is located in %INFORMIXDIR%, and is a plain text file that you can modify with any text editor. If you have more than one database server installed in %INFORMIXDIR%, there will be more than one batch file with the .cmd extension, each bearing the name of the database server with which it is associated.
To run dbservername.cmd from a command prompt, type dbservername or configure a command prompt so that it runs dbservername.cmd automatically at start.