OpenLink's Multi-Tier drivers comprise a client component and a server component. The following files are used by OpenLink's client drivers: openlink.sh and openlink.csh - These files appear in the root of Unix-based, Multi-Tier installations. They contain ODBC-related environment variables. odbc.ini - This file appears in the /bin sub-directory of Unix-based, Multi-Tier installations. It contains Data Source Name connection attributes. Occasionally, it may contain client communication settings and ODBC tracing parameters. odbcinst.ini - This file appears in the /bin sub-directory of Unix-based, Multi-Tier installations. It contains path and setup information for the Single-Tier driver. The following files are used by OpenLink's server components: openlink.sh and openlink.csh - These files appear in the root of Unix-based, Multi-Tier installations. They contain ODBC-related environment variables. oplrqb.ini - This file appears in the /bin sub-directory of all, Multi-Tier server components installations. This file contains database-specific environment variables. It also contains parameters that affect security, port usage, agent behavior, and client/server communications. www_sv.ini - This file appears in the /bin/w3config sub-directory of all Multi-Tier server components installations. This file contains the Web-based Administrative Assistants username, encrypted password, and listening port.
Windows drivers do not contain the Multi-Tier client files. Client environment variables appear on the Environment or Advanced tab of the System utility. The odbc.ini and odbcinst.ini files are replaced by the HKEY_LOCAL_MACHINE/SOFTWARE/ODBC/ODBC.INI and HKEY_LOCAL_MACHINE/SOFTWARE/ODBC/ODBC.INI sections in the registry. Windows server installations retain the oplrqb.ini and www_sv.ini files.