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Switch off Exclusive Mode prior to the upgrade

edited Mar 11, 2017 4:00AM in Database Administration (MOSC) 6 commentsAnswered

The preupgrade checker for 12.2.0.1 says about a 11.2.0.4 db:

   + Switch off Exclusive Mode prior to the upgrade.

     Your database system has at least one account with only the 10G password

     version (see the PASSWORD_VERSIONS column of DBA_USERS).

     Starting with Oracle Database release 12.2, Exclusive Mode is the

     default password-based authentication mode. In Exclusive Mode, accounts

     which only have the 10G password version (see

     DBA_USERS.PASSWORD_VERSIONS) are no longer accessible. If your system

     has any account with only the 10G password version, Exclusive Mode must

     be switched off prior to the upgrade. See the Network Reference Manual

     chapter about the SQLNET.ORA parameter

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