Sybase 11.9.x-12.5 - Manual (Page 15)

CHAPTER 4 Backup Server Error Messages
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No driver of the requested protocol class is available
No driver of the requested protocol class is available.
This message indicates that the entry in the interfaces file for the requested
Backup Server is wrong. Refer to the System Administration Guide Supplement
for your platform to find out the correct interfaces file entries.
Net-lib protocol driver call to connect two endpoints failed
Net-lib protocol driver call to connect two endpoints
failed.
An error occurred while trying to connect to the specified Backup Server. Make
sure the device name in the interfaces file is correct and that the Adaptive
Server's network address is correct in the interfaces file.
Open Server Error Messages Related to Backup Server
Following are some Open Server error messages that can appear when you are
using Backup Server.
Error 5704.10.0
Open Server Error: 5704.10.0: Changed client character set
setting to 'cp850'
Open Server Session Fatal Error: 16227.15.0: Unknown token TDS stream
received by spid 5
This message can appear if a user, who succeeds in executing a local dump
database , tries to dump to a remote Backup Server.
Check your default character set. If the default character sets for the remote
Backup Server and Adaptive Server are different, change the Backup Server's
default character set, restart the Backup Server, and rerun the
dump .