Logging Facility
Each installation has an installation-wide transaction log file that keeps track of all transactions for all users. The log file can be distributed among up to sixteen partitions (locations), although the files are treated as one logical file.
With dual logging enabled, the installation has an alternate log file. With dual logging, a media failure on one of the logs does not result in the loss of data or the interruption of service. If one of the log file disks fail, the logging system automatically switches to the other log without interrupting the application.
When log files are properly configured, the use of dual logging has a negligible impact on system performance.
Note: If your system is configured for Ingres Cluster Solution, each node in the Ingres cluster maintains a separate Archiver and Recovery error log. Each log is distinguished by having _nodename appended to the base log name, where nodename is the Ingres node name for the host machine as returned by iipmhost. Dual logging is also provided on clusters.
Last modified date: 08/28/2024