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Solution to ORA-12560: TNS: protocol adapter errors

Source: Internet
Author: User
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Cause of ORA-12560: TNS: protocol adapter error:

1. The listening service is not started. On the windows platform, perform the following operations: My computer-management-services and applications-services, open the service panel, and start the oraclehome92TNSlistener service.

2. The database instance is not started. On the windows platform, perform the following operations: My computer-management-services and applications-services. Open the service panel and start oracleserviceXXXX. XXXX is your database SID.

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