Error During 12c Upgrade Assistant on INSERT INTO 12C_WCSITES.SYSTEMUSERS: SQLException: ORA-00001: unique constraint (12C_WCSITES.SYS_C0016759) violated

(Doc ID 2267030.1)

Last updated on MAY 28, 2017

Applies to:

Oracle WebCenter Sites - Version 12.2.1.1.0 and later
Information in this document applies to any platform.

Symptoms

Unique constraint violation error occurs while running the 12c Upgrade Assistant. The following error is seen in the ua{date and time}.log:

Cause

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