Al worked fine, an then, all of a sudden the Backup Server stalled. It got stuck, and hourly commands from UNIX to Sybase to backup the transaction log, were started but queued. Only after killing the UNIX-processes that tried to make Sybase backup, it suddenly woke up again, started to finish the backup it was making.
Hardly any users were on line, only a few were doing selects and inserts in various tables.
The log-files of both dataserver and backup server didn't mention anything about this...!!!
What can be a reason for e backup server to get stuck in the middle of a process?