Perform the following steps to upgrade the Domain Schema using the 12.2.1.4.0 Upgrade Assistant.
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Open a command prompt window as administrator.
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Navigate to
C:\<Oracle_iAS_12.2.1.4_Home>\oracle_common\upgrade\bin
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Execute ua.bat
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Click Next.
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Select All Schemas Used by the Domain.
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In Domain Directory, select the base_domain directory.
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Click Next.
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Click Next on Component List dialog.
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Check all prerequisites and select the check boxes when done.
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Provide the RCU Database connection information.
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Click Next to complete steps 6, 7.
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Type and confirm the new schema password.
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Click Next to complete steps 9, 10, 11.
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Click Upgrade.
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Click Next and Close to complete the upgrade.