sybase创建服务失败【已解决】

$ srvbuildres -r server.rs
Building Adaptive Server 'db1_server':
Writing entry into directory services...
Directory services entry complete.
Building master device...
Master device complete.
Writing RUN_db1_server file...
RUN_db1_server file complete.
Starting server...
Task failed
Open Client message: 'ct_connect(): network packet layer: internal net library
error: Unable to find an available protocol driver structure
'.  Open Client message: 'ct_connect(): network packet layer: internal net
library error: Unable to find an available protocol driver structure