Handling system error messages
A system error might indicate a system problem, a resource problem, or an unexpected condition.
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All uncommitted changes to the database are rolled back when a system problem stops QMF. Error information about the system problem is written to the trace data, which is the only source of information for a system problem that stops QMF. The Q.ERROR_LOG table contains information about a system error only if the error occurred while the database was still running.