Error map

SQLSTATE[HY000] [2002] PDOException: SQLSTATE[HY000] [2002] Connection refused

PHP · layer 4, Application & API

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SQLSTATE[HY000] [2002] — PDOException: SQLSTATE[HY000] [2002] Connection refused (PHP)SQLSTATE[HY…2002 — MySQL ERROR 2002 (HY000): Can't connect to local MySQL server through socket (MySQL)2002HikariCP timeout — HikariPool-1 - Connection is not available, request timed out after 30000ms (Java)HikariCP timeout1040 — MySQL ERROR 1040 (08004): Too many connections (MySQL)1040Communications link failure — com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure (Java)Communications link…1049 — MySQL ERROR 1049 (42000): Unknown database 'x' (MySQL)1049could not find driver — PDOException: could not find driver (PHP)could not find driv…ECONNREFUSED — Error: connect ECONNREFUSED 127.0.0.1:5432 (Node.js)ECONNREFUSED1045 — MySQL ERROR 1045 (28000): Access denied for user (MySQL)10452006 — MySQL ERROR 2006 (HY000): MySQL server has gone away (MySQL)2006DB connection — WordPress: Error Establishing a Database Connection (WordPress)DB connectionLock wait timeout — Lock wait timeout exceeded; try restarting transaction (MySQL 1205) (SQL)Lock wait timeout2003 — MySQL ERROR 2003 (HY000): Can't connect to MySQL server on 'host:3306' (111) (MySQL)2003buffering timed out — MongooseError: Operation `users.find()` buffering timed out after 10000ms (Node.js)buffering timed outEMFILE — Too many open files (EMFILE) (Linux)EMFILE1114 — MySQL ERROR 1114 (HY000): The table 'x' is full (MySQL)11141418 — MySQL ERROR 1418 (HY000): This function has none of DETERMINISTIC, NO SQL, or READS SQL DATA in its declaration and binary logging is enabled (MySQL)14182013 — MySQL ERROR 2013 (HY000): Lost connection to MySQL server during query (MySQL)20131046 — MySQL ERROR 1046 (3D000): No database selected (MySQL)10461153 — MySQL ERROR 1153 (08S01): Got a packet bigger than 'max_allowed_packet' bytes (MySQL)11533D000 — FATAL: database "x" does not exist (PostgreSQL)3D000Call to undefined function — PHP Fatal error: Uncaught Error: Call to undefined function (PHP)Call to undefined f…GD missing — Fatal error: Uncaught Error: Call to undefined function imagecreatefromjpeg() (PHP)GD missingintl missing — Class "NumberFormatter" not found / The "intl" PHP extension is required (PHP)intl missingEADDRINUSE — Error: listen EADDRINUSE: address already in use :::3000 (Node.js)EADDRINUSEFailed to fetch — TypeError: Failed to fetch / NetworkError when attempting to fetch resource (JavaScript)Failed to fetchETIMEDOUT — API Request Timed Out (ETIMEDOUT / ReadTimeout / timeout of 30000ms exceeded) (API)ETIMEDOUT

Directly related (7)

2002MySQL

MySQL ERROR 2002 (HY000): Can't connect to local MySQL server through socket

The client couldn’t reach the MySQL server — it isn’t running, or the client is looking for the socket/port in the wrong place.

HikariCP timeoutJava

HikariPool-1 - Connection is not available, request timed out after 30000ms

The connection pool was exhausted — all connections were busy for 30 seconds.

1040MySQL

MySQL ERROR 1040 (08004): Too many connections

MySQL reached `max_connections` and refuses new clients.

Communications link failureJava

com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The MySQL JDBC driver couldn’t reach the database (or the connection dropped).

1049MySQL

MySQL ERROR 1049 (42000): Unknown database 'x'

The database named in the connection doesn’t exist on that server.

could not find driverPHP

PDOException: could not find driver

The PDO driver for your database (pdo_mysql, pdo_pgsql, pdo_sqlite) isn’t installed or enabled.

ECONNREFUSEDNode.js

Error: connect ECONNREFUSED 127.0.0.1:5432

Nothing is listening at that host:port — the target service is down or you’re connecting to the wrong address.

Two steps away (19)

1045MySQL

MySQL ERROR 1045 (28000): Access denied for user

MySQL rejected the login — wrong password, wrong user/host combination, or the user doesn’t exist.

2006MySQL

MySQL ERROR 2006 (HY000): MySQL server has gone away

The connection to MySQL was closed — usually by a timeout or a packet larger than `max_allowed_packet`.

DB connectionWordPress

WordPress: Error Establishing a Database Connection

WordPress can’t connect to its MySQL/MariaDB database with the credentials in wp-config.php, or the database server is down.

Lock wait timeoutSQL

Lock wait timeout exceeded; try restarting transaction (MySQL 1205)

A query waited too long for a row lock held by another transaction and gave up.

2003MySQL

MySQL ERROR 2003 (HY000): Can't connect to MySQL server on 'host:3306' (111)

The client couldn’t reach MySQL over TCP — server down, wrong host/port, firewall, or MySQL bound to localhost only.

buffering timed outNode.js

MongooseError: Operation `users.find()` buffering timed out after 10000ms

Mongoose queued a query waiting for a connection that never opened.

EMFILELinux

Too many open files (EMFILE)

The process hit its file-descriptor limit — sockets, files and pipes all count.

1114MySQL

MySQL ERROR 1114 (HY000): The table 'x' is full

MySQL couldn’t extend the table — disk full, a size limit, or a MEMORY table hitting max_heap_table_size.

1418MySQL

MySQL ERROR 1418 (HY000): This function has none of DETERMINISTIC, NO SQL, or READS SQL DATA in its declaration and binary logging is enabled

Creating a stored function failed because binary logging requires it to declare its data access characteristics.

2013MySQL

MySQL ERROR 2013 (HY000): Lost connection to MySQL server during query

The connection dropped mid-query — server crash/restart, timeouts, or a proxy cutting long queries.

1046MySQL

MySQL ERROR 1046 (3D000): No database selected

A query referenced tables without a database selected (no USE and no db in the connection).

1153MySQL

MySQL ERROR 1153 (08S01): Got a packet bigger than 'max_allowed_packet' bytes

A single statement or row exceeded max_allowed_packet — big BLOBs, huge INSERTs or large dump lines.

3D000PostgreSQL

FATAL: database "x" does not exist

The connection names a database that isn’t on that server.

Call to undefined functionPHP

PHP Fatal error: Uncaught Error: Call to undefined function

PHP can’t find the function you called — usually a missing extension, missing include, or namespace issue.

GD missingPHP

Fatal error: Uncaught Error: Call to undefined function imagecreatefromjpeg()

The GD extension (or its JPEG/WebP support) isn’t installed for the PHP version serving the site.

intl missingPHP

Class "NumberFormatter" not found / The "intl" PHP extension is required

Code uses the intl extension (NumberFormatter, Collator, IntlDateFormatter) but it isn’t installed.

EADDRINUSENode.js

Error: listen EADDRINUSE: address already in use :::3000

Another process is already listening on that port.

Failed to fetchJavaScript

TypeError: Failed to fetch / NetworkError when attempting to fetch resource

The browser couldn’t complete the request at the network level — CORS, DNS, offline, blocked mixed content, or the server refused…

ETIMEDOUTAPI

API Request Timed Out (ETIMEDOUT / ReadTimeout / timeout of 30000ms exceeded)

The client gave up waiting — either for the connection to open or for the response to arrive.

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