Environment variables are used to store various types of information.
Not all environment variables must be set in all circumstances.
The SQL Anywhere installer creates or modifies the following environment variables in your computer's properties: PATH and SQLANY17.
You can view the environment variables set for a database server by starting the database server with the -ze option. After the database server is started, you can view environment variables using the xp_getenv system procedure.
Other environment variables can be set by modifying the properties for your computer, or within command prompts or batch files by using the SET command.