The SYBASE environment variable must define the SAP® ASE software installation path.
The PATH environment variable must define the access path to database
client programs.
On UNIX™, LD_LIBRARY_PATH (or equivalent) must hold the
path to the client libraries libsybct.so and libsybcs.so. On Windows®, the path to the DLLs must be defined in PATH.
Check the SAP ASE Client configuration,
especially server name definition in connection's directory source, see DSQUERY environment
variable.