PostgreSQLに急に接続できなくなった時の対処法 - Qiita問題 PythonからPostgreSQLにいつも通りにアクセスして作業しようと思ったらエラーで動かず。 OperationalError: could not connect to server: Connection refused Is the server running on host "localhost" (::1) and accepting TCP/IP connections on port 5432? could not connect to server: Connection refused Is the server running on host "localhost" (127.0.0.1) and accepting TCP/IP connections on port 5432?
MySQLとPostgreSQLコマンド比較表 - Qiita
