Environment variables

It is crucial to the operation of Sybase products that the system environment variables be set correctly.

Environment variables are set in the user’s environment either interactively or by including them in the user’s .login and .cshrc files (for C shell) or .profile file (for Bourne shell). The installation instructions in this guide explain when to set these variables.

As part of the installation, the installer setup these environment variables in SYBASE.csh and SYBASE.sh files. You can source the file to set their environment.

DSLISTEN – defines the name Adaptive Server uses to listen for client connections if no name is given during the Adaptive Server start-up. If DSLISTEN is not set, and no name is given during the Adaptive Server start-up, the Adaptive Server name defaults to SYBASE.
DSQUERY – defines the Adaptive Server name that client programs attempt to connect to if no Adaptive Server is specified with a command line option. If DSQUERY is not set, and you do not supply the Adaptive Server name with a command line option, clients attempt to connect to SYBASE.
SYBASE – defines the path of the Sybase installation directory. The installation program sets up the variable SYBASE to point to the release directory specified during installation.
SYBASE_ASE – defines the subdirectory of the Adaptive Server component.
SYBASE_OCS – defines the subdirectory to which Open Client™ is set.
SYBASE_SYSAM – points to the license-management software directory.
PATH – specifies directory path to search for executables. The Sybase executables are located in the installed_components /bin directory. When using the source files SYBASE.csh or SYBASE.sh, the following paths are prepended to PATH:
```
$SYBASE/$SYBASE_ASE/bin:$SYBASE/$SYBASE_OCS/bin
```
LD_LIBRARY_PATH – this variable specifies the directory to search for shared libraries. The Sybase shared libraries are located in the installed component’s /lib directory.

When using the source files: SYBASE.csh or SYBASE.sh, the following paths are prepended to the LD_LIBRARY_PATH environment variable:
```
$SYBASE/$SYBASE_ASE/lib:$SYBASE/$SYBASE_OCS/
lib:$SYBASE/SYBASE_FTS/lib,etc.
```
LD_LIBRARY_PATH64 – this variable specifies the directory to search for shared libraries on 64-bit Sun platforms.
LIBPATH – on the IBM RS/6000 platform, this variable specifies which directory to search for libraries.

When using the source files: SYBASE.csh or SYBASE.sh, the following paths are prepended to the LIBPATH environment variable:
```
$SYBASE/$SYBASE_ASE/lib:$SYBASE/$SYBASE_OCS/
lib: $SYBASE/SYBASE_FTS/lib, etc.
```
SHLIB_PATH – on HP-UX platforms, this variable specifies which directory to search for libraries.

When using the source files: SYBASE.csh or SYBASE.sh, the following paths are prepended to the LIBPATH environment variable:
```
$SYBASE/$SYBASE_ASE/lib:$SYBASE/$SYBASE_OCS/
lib: $SYBASE/SYBASE_FTS/lib, etc.
```