Default Password For System User("manager") Has Changed In Oracle 19c
(Doc ID 2620296.1)
Last updated on DECEMBER 15, 2019
Applies to:Oracle Database - Standard Edition - Version 184.108.40.206.0 and later
Oracle Database - Enterprise Edition - Version 220.127.116.11.0 and later
Oracle Database - Personal Edition - Version 18.104.22.168.0 and later
Information in this document applies to any platform.
It is written in "SQL Language Reference" document that:
If you do not specify these clauses, then Oracle Database creates default passwords
change_on_install for user SYS and manager for user SYSTEM.
But default password for system user "manager" has changed in 19c to "no authentication".
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