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Appendix D Environment Variables
At compilation, and link-editing, and execution of application programs, the user can specify tuning the operating
environment with environment variables.
For the specification formats and meanings of the environment variables, refer to the "RDB User's Guide: Application
Program Development."
Environment variables specified at compilation and link-editing of application
programs
· LANG (UNIX only)
· RDBDB
· SQLPC
· SQLPCOB
· INCDIR (UNIX only)
· INCLUDE (Windows NT/2000/XP only)
Environment variables specified at execution of application programs
· LD_LIBRARY_PATH_64
· LD_LIBRARY_PATH
· LD_PRELOAD
· SHLIB_PATH
· RDBNAME
· SQLRTENV
In addition, there are environment variables related to the execution parameters of the operating environment file for
application programs. The operating environment file is used to tune the operating environment of application
programs; however, a part of environment can be specified with environment variables. The parameters specified in
those environment variables are also valid in the rdbupt command.
Operating environment tuning priority
If a specification resulting from an environment variable duplicates a specification resulting from an operating
environment file, the former specification takes precedence.
Correspondence between environment variables and execution parameters of
the operating environment file
Table: Environment variables specified upon execution of the application program and execution parameters of the
operating environment file shows the correspondence between environment variables and execution parameters of
the operating environment file.
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