ORA-04020 on X$ Table After Upgrade to 19.18 (Doc ID 2951862.1)

Last updated on JULY 21, 2023

Applies to:

Oracle Cloud Infrastructure - Exadata Cloud Service - Version N/A and later
Information in this document applies to any platform.

Encounter a sql that fails with an ORA-04020 on and X$ table such as following:

ORA-12801: error signaled in parallel query server PPA7,
ORA-04020: deadlock detected while trying to lock object SYS.X$KSXMME

Upgraded to 19.18.

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In this Document

Symptoms

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