A deadlock is an unresolved contention for the use of a resource. Resources are either DC/UCF system resources or database resources. Different control block structures are used to track contention for DC/UCF system resources and database resources. Although deadlocks are tracked using different control block structures, the same deadlock detection mechanism is used to resolve deadlocks.
You can control the allocation of some system resources used by the deadlock detection mechanism with parameters on the system generation SYSTEM statement. The discussion that follows briefly describes how the system detects and manages both DC/UCF system and database deadlocks to help you establish appropriate values for these parameters.
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