"Alter Or Drop Sequence" Wait On Library Cache Pin And Blocked By enq: SQ - contention
(Doc ID 2963226.1)
Last updated on JULY 20, 2024
Applies to:
Oracle Database - Enterprise Edition - Version 19.18.0.0.0 and later
Information in this document applies to any platform.
Symptoms
- ALTER SEQUENCE or DROP SEQUENCE hang on library cache pin.
- Blocking session is holding enqueue on SCHEDULER$_INSTANCE_S sequence and waiting on enq: SQ - contention.
Changes
NA
Cause
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