Various files for the BI Server contain configuration information: NQSConfig.INI, odbc.ini, and tnsnames.ora. The NQSConfig.INI file sets parameters on startup, which customize the action of an individual installation. The file contains configuration details that aren't managed by the Fusion Middleware Control. The odbc.ini file contains non-Oracle data source (DSN) connection information. The tnsnames.ora file contains network service names mapped to connect descriptors for the local naming method, or net service names mapped to listener protocol addresses. You must examine these 11g files and manually copy the configuration information to the respective 12c files.
Parent topic: Migrating Configuration of Oracle BI EE