Each time the Cluster Edition starts, it writes information to a local error log file, called the Adaptive Server error log:
$SYBASE/$SYBASE_ASE/install/instance_name.log
This file:
Stores information about the success or failure of each start-up attempt.
Logs error and informational messages generated by the server during its operations.
Remains open until you stop the server process.
Contains startup messages from the Cluster Edition
The Cluster Edition includes the instance ID to the front of the error log header with this format:
instance id: engine number : family id: process id: date time
When you want to make more disk space available by reducing
the size of the error log, stop the instance before deleting logged
messages. The log file cannot release its memory space until the
instance has stopped.