PostgreSQL 08006: connection_failure 报错 故障修复 远程处理

文档解释

08006: connection_failure

PostgreSQL error 08006, ‘Connection Failure’, occurs when PostgreSQL is unable to connect to the database, which can be due to incorrect configurations, lack of permissions, or other issues.

Error Explanation

The 08006 error is encountered when the server is unable to accept a database connection with the given parameters. The error is accompanied by a ‘Connection refused’ message, which typically occurs when either a wrong socket file path is provided or the server is not running. The error may also occur when the database is unavailable due to hardware or other issues.

Common Cases

• Incorrect configurations: 08006 may be caused due to incorrect configurations in the database servers. This includes being not up to date with the latest libraries, wrong port numbers, wrong host IP address, unavailable host, or incorrect password.

• Lack of permissions: Incorrect permissions on databases or wrong database credentials may also result in a connection failure.

• Firewall issues: Firewalls can block outbound connections, which can lead to a connection refusal by the server.

• Server not running: 08006 error can also be due to the server not running altogether, due to hardware issues or someone manually turning the server off.

Resolution

• Verify all configurations to ensure they are correct and up to date.

• Check the permissions on databases and make sure the provided credentials are valid.

• Disable the firewall temporarily or whitelist the connection on the server.

• Restart the server if it is not running. If the problem persists, check for hardware problems.

• If none of the above works, contact the database administrator for help.