Search notes:

Oracle wait event: enq: ST - contention

ST stands for Space Transaction.
The enq: ST – contention event synchronizes space management operations in dictionary-managed tablespaces. Thus, the event does not occur in locally-managed tablespace.
In fact, this event was one of the major reasons why locally managed tablesspaces were introduced in Oracle 8i.

See also

v$event_name
MOS Note 974863.1

Index

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