DatabaseOracleWhat should I do if the oracle database listening service cannot connect to the identifier?What should I do if the oracle database listening service cannot connect to the identifier?
Oracle database listening service cannot connect to the identification. Possible reasons and solutions: check identification permissions and existence; confirm that the password is correct and reset the password; check the listener configuration and "connect through" permissions; remove firewall restrictions ; Start the database server; troubleshoot network connectivity; check TNS alias configuration; check the error log and Oracle documentation for other errors.
Solve the problem that the Oracle database listening service cannot connect to the identifier
: Oracle database listening service What should I do if I cannot connect to the logo?
Answer:
The failure to connect to the identity may be due to one of the following reasons:
1. The identity is not authorized
- Check whether the identity has the required permissions to connect to the database.
- Check whether the identifier exists in the database.
2. Incorrect password
- Make sure the password you entered is correct.
- Reset the identity's password and try to connect again.
3. Listener configuration error
- Check whether the identifier is correctly configured in the listener configuration file.
- Check whether the identity has been granted the "connect through" permission.
4. Database firewall restrictions
- Check whether the database firewall is blocking the connection.
- Configure the firewall to allow identity connections.
5. Database server is shut down
- Check whether the database server is running.
- Start the database server and try to reconnect.
6. Network problems
- Check whether the network connection from the client to the database server is normal.
- Try to connect using different network ports.
7. TNS configuration error
- Check whether the TNS alias is configured correctly.
- Check that the server name and port specified in the TNS alias are correct.
8. Other Errors
- Check the Oracle error log for more details.
- Check the Oracle documentation to find solutions for specific error codes.
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