The mini-dump feature allows you to create an ASCII file that is a summary of a system dump when the system fails. The mini-dump created is output from SAT, which summarizes the system failure. The mini-dump contains a date and time stamp, the MPE/iX version identification, the system failure number, and a stack trace. This information can be used to track system failures and to notify system managers, through network transmissions.
The mini-dump feature is especially beneficial for customers with homogeneous environments (many systems with similar configurations and operating system versions).
In a homogeneous environment many duplicate problems can occur; therefore, the mini-dump feature can be used to bypass taking a full memory dump for system failures that have already occurred. The mini-dump can be configured for reoccurring failures. New problems cannot be diagnosed; however, if you want to minimize system recovery time due to repeat failures, then the mini-dump feature is recommended.
The mini-dump is not intended to replace a full memory dump. A mini-dump provides a summary of the system failure only. When a system failure occurs, a full memory dump is required so that diagnostics can be run.
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Before proceeding with the mini-dump configuration, become familiar with the BLDDUMP commands BUILDMD, INITMD, and LISTMD. These commands are described in the "Managing the Dump-to-Disk and Mini-Dump Features" later in this chapter.
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