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This article shows you how to solve oracle database login, concise and easy to understand, absolutely can make your eyes shine, through the detailed introduction of this article I hope you can gain something.

After manually creating the database, try setting the environment variable oracle_sid. Different platforms have different settings. In general, there is no need to modify the registry. Under windows, there is an environment variable under my computer properties advanced. Create a new system variable named oracle_sid with the value of the instance name you created. After restarting the computer and starting the database, it should be fine.

2, D:\product\11.2.0\dbhome_1\NETWORK\ADMIN under the listener.ora and tnsnames.ora file ip changed to localhost can log in. (If the above method does not work)

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