enq: TQ - DDL contention
Short Description
Enqueue wait. Undocumented Queue table enqueue.
Additional Information​
An enqueue is a wait for a resource held by another.
enq: TQ - DDL contention is undocumented but there are references to DataPump operations, the scheduler and AQ.
How to reduce this wait​
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Additional Links​
Oracle Docs - Oracle Enqueue Names
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