Environment Variables

The operation of SAP products relies on system environment variables being 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).

Note: The installer configures these environment variables in the SYBASE.csh and SYBASE.sh files. Source these file to set the user's environment.

DSLISTEN – defines the name SAP ASE uses to listen for client connections if no name is given during the SAP ASE start-up. If DSLISTEN is not set, and no name is given during the SAP ASE start-up, the SAP ASE name defaults to SYBASE.
DSQUERY – defines the SAP ASE name that client programs attempt to connect to if no SAP ASE is specified with a command line option. If DSQUERY is not set, and you do not supply the SAP ASE name with a command line option, clients attempt to connect to SYBASE.
SYBASE – defines the path of the SAP 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 SAP ASE component.
SYBASE_OCS –defines the subdirectory to which Open Client™ is set.
SYBASE_SYSAM– points to the license-management software directory.
PATH – specifies the directory path to search for executables. The SAP executables are located in the installed componen'ts /bin directory. When using the source files SYBASE.csh or SYBASE.sh, these 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 SAP shared libraries are located in the installed component’s /lib directory.
When using the source files SYBASE.csh or SYBASE.sh, these 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, these 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, these paths are prepended to the LIBPATH environment variable:
```
$SYBASE/$SYBASE_ASE/lib:$SYBASE/$SYBASE_OCS/
lib: $SYBASE/SYBASE_FTS/lib, etc.
```