Database upgrades are required whenever there is a major change of software version. Upgrading your databases from a previous version to the latest installed software version involves several different tasks using the Database Wizard and the Upgrade Version Command.
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You can only upgrade a model configuration using the same database type, that is Oracle to Oracle or SQL to SQL. You cannot upgrade, for example, an older version on a SQL Server database to the current version on an Oracle database. However, you can use the Database Conversion Wizard to convert SQL Server databases to Oracle or Oracle databases to SQL Server databases after they have been upgraded. See Convert my databases.
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Backup the catalog and model databases before beginning the upgrade process.
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