There are several logs you can use for debugging:
Replication Server log – the Replication Server logs its messages here. Use the log to find informational and error messages from Replication Server. The log is located in the Replication Server Run directory.
Script log – the data service START and STOP scripts log messages here. Use the log to find informational and error messages that result from running the scripts. The log is located in /var/opt/repserver/harep.log.
Console log – the operating system logs messages here. Use this log to find informational and error messages from the hardware. The log is located in /var/adm/messages.
CCD log – the Cluster Configurations Database, which is part of the Sun Cluster configuration, logs messages here. Use this log to find informational and error messages about the Sun Cluster configuration and health. The log is located in /var/opt/SUNWcluster/ccd/ccd.log.
