Library Cache Locks With Enq: SQ - Contention (Doc ID 2930875.1)

Last updated on JULY 20, 2024

Applies to:

Oracle Database - Enterprise Edition - Version 19.14.0.0.0 and later
Information in this document applies to any platform.

High waits on enq: SQ - contention on sequence IDGEN1$.

LOB IDs are generated using system generated sequence idgen1.

A high number of row inserts are inserting to table with lob column. Altogether they account for 80 Million rows.

With a smaller cache size, the cache would be quickly exhausted with direct path loads in such case.

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