OGG-00794
A resource was unavailable while attempting to read the log at {0}. check SYSLOG for details.
Cause
The process is trying to read a log file that is no longer available.
Action
Make certain that the BSDS name was specified correctly, and that the ADD EXTRACT or ALTER EXTRACT command was issued correctly. If a start time was used, instead of the NOW option, it is possible to specify a start point for which logs are no longer available. If Extract is configured properly, contact Oracle Support.