19.x:Upgrade of database failed with "ORA-02437: cannot validate (SYS.WRI$_ALERT_HISTORY_PK) - primary key violated "
(Doc ID 2752522.1)
Last updated on FEBRUARY 23, 2021
Applies to:Oracle Database - Enterprise Edition - Version 18.104.22.168 and later
Information in this document applies to any platform.
Upgrading database from 11gr2 to 19c failed with below errors
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