How the Logging Facility Works
All servers in the Ingres installation, as well as the recovery and archiver processes, share the logging facility. Log records written by different servers, or written by several threads in the same server, can be combined with log records written by other servers or threads. The Logging Facility performs the following actions:
• Copies the Log records to in-memory log buffers, which are written to the log file as they fill.
• The log file block is rewritten when the file wraps around.