Error map

Prisma P1001 Error: P1001: Can't reach database server at `host`:`5432`

Node.js · layer 4, Application & API

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4 · Application & API 5 · Data 6 · Platform & cloud 7 · Build & delivery
Prisma P1001 — Error: P1001: Can't reach database server at `host`:`5432` (Node.js)Prisma P1001could not connect — PostgreSQL: could not connect to server / connection refused — Is the server running on host and accepting TCP/IP connections? (PostgreSQL)could not connectHikariCP timeout — HikariPool-1 - Connection is not available, request timed out after 30000ms (Java)HikariCP timeoutMongoServerSelectionError — MongooseServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017 (Node.js)MongoServerSelectio…buffering timed out — MongooseError: Operation `users.find()` buffering timed out after 10000ms (Node.js)buffering timed outprisma generate — Error: @prisma/client did not initialize yet. Please run "prisma generate" (Node.js)prisma generatePrisma P2002 — PrismaClientKnownRequestError P2002: Unique constraint failed on the fields: (`email`) (Node.js)Prisma P2002SequelizeConnectionRefusedError — SequelizeConnectionRefusedError: connect ECONNREFUSED 127.0.0.1:5432 (Node.js)SequelizeConnection…2002 — MySQL ERROR 2002 (HY000): Can't connect to local MySQL server through socket (MySQL)200228P01 — PostgreSQL: FATAL: password authentication failed for user (PostgreSQL)28P01ECONNREFUSED — Error: connect ECONNREFUSED 127.0.0.1:5432 (Node.js)ECONNREFUSED2006 — MySQL ERROR 2006 (HY000): MySQL server has gone away (MySQL)2006Lock wait timeout — Lock wait timeout exceeded; try restarting transaction (MySQL 1205) (SQL)Lock wait timeout1040 — MySQL ERROR 1040 (08004): Too many connections (MySQL)1040CastError ObjectId — CastError: Cast to ObjectId failed for value "x" (type string) at path "_id" (Node.js)CastError ObjectIdE11000 duplicate key — MongoServerError: E11000 duplicate key error collection: db.users index: email_1 dup key (Node.js)E11000 duplicate keyMongoose ValidationError — ValidationError: User validation failed: email: Path `email` is required. (Node.js)Mongoose Validation…ELIFECYCLE — npm ERR! code ELIFECYCLE / Command failed with exit code 1 (npm)ELIFECYCLECOPY failed — COPY failed: file not found in build context / "/app/x": not found (Docker)COPY failedGradle wrapper main class — Error: Could not find or load main class org.gradle.wrapper.GradleWrapperMain (Java)Gradle wrapper main…23505 — PostgreSQL: ERROR: duplicate key value violates unique constraint (PostgreSQL)23505Hibernate ConstraintViolationException — org.hibernate.exception.ConstraintViolationException: could not execute statement (Java)Hibernate Constrain…1022 — MySQL ERROR 1022 (23000): Can't write; duplicate key in table (MySQL)1022LazyInitializationException — org.hibernate.LazyInitializationException: could not initialize proxy - no Session (Java)LazyInitializationE…TransientObjectException — org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing (Java)TransientObjectExce…SQLAlchemy OperationalError — sqlalchemy.exc.OperationalError: (psycopg2.OperationalError) connection to server … failed (Python)SQLAlchemy Operatio…

Directly related (7)

could not connectPostgreSQL

PostgreSQL: could not connect to server / connection refused — Is the server running on host and accepting TCP/IP connections?

The client reached no PostgreSQL listener at that host/port — the server is down, listening elsewhere, or not accepting remote co…

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.

MongoServerSelectionErrorNode.js

MongooseServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017

The MongoDB driver couldn’t find a reachable server for the connection string.

buffering timed outNode.js

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

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

prisma generateNode.js

Error: @prisma/client did not initialize yet. Please run "prisma generate"

The generated Prisma Client is missing or out of date.

Prisma P2002Node.js

PrismaClientKnownRequestError P2002: Unique constraint failed on the fields: (`email`)

A Prisma create/update violated a unique constraint.

SequelizeConnectionRefusedErrorNode.js

SequelizeConnectionRefusedError: connect ECONNREFUSED 127.0.0.1:5432

Sequelize couldn’t connect to the database server.

Two steps away (18)

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.

28P01PostgreSQL

PostgreSQL: FATAL: password authentication failed for user

PostgreSQL rejected the password for that role, or pg_hba.conf requires a different auth method.

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.

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`.

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.

1040MySQL

MySQL ERROR 1040 (08004): Too many connections

MySQL reached `max_connections` and refuses new clients.

CastError ObjectIdNode.js

CastError: Cast to ObjectId failed for value "x" (type string) at path "_id"

A value that isn’t a valid 24-hex-character ObjectId was used in an _id query.

E11000 duplicate keyNode.js

MongoServerError: E11000 duplicate key error collection: db.users index: email_1 dup key

An insert/update violated a unique index in MongoDB.

Mongoose ValidationErrorNode.js

ValidationError: User validation failed: email: Path `email` is required.

A document failed Mongoose schema validation before saving.

ELIFECYCLEnpm

npm ERR! code ELIFECYCLE / Command failed with exit code 1

An npm script (build, start, test, postinstall) exited with an error. ELIFECYCLE is only the wrapper — the real error is printed…

COPY failedDocker

COPY failed: file not found in build context / "/app/x": not found

The Dockerfile COPY refers to a path outside the build context, excluded by .dockerignore, or relative to the wrong directory.

Gradle wrapper main classJava

Error: Could not find or load main class org.gradle.wrapper.GradleWrapperMain

The Gradle wrapper JAR (gradle/wrapper/gradle-wrapper.jar) is missing or corrupt.

23505PostgreSQL

PostgreSQL: ERROR: duplicate key value violates unique constraint

An INSERT/UPDATE would create a duplicate in a UNIQUE or PRIMARY KEY column — or the id sequence is behind the existing data.

Hibernate ConstraintViolationExceptionJava

org.hibernate.exception.ConstraintViolationException: could not execute statement

The database rejected an insert/update because of a constraint (unique, foreign key, not null).

1022MySQL

MySQL ERROR 1022 (23000): Can't write; duplicate key in table

An ALTER/CREATE produced a duplicate key or constraint name — often a foreign key name that already exists in the database.

LazyInitializationExceptionJava

org.hibernate.LazyInitializationException: could not initialize proxy - no Session

A lazy-loaded association was accessed after the Hibernate session/transaction closed.

TransientObjectExceptionJava

org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing

An entity references another entity that hasn’t been saved yet, and no cascade is configured.

SQLAlchemy OperationalErrorPython

sqlalchemy.exc.OperationalError: (psycopg2.OperationalError) connection to server … failed

SQLAlchemy’s DB driver raised an operational error — connection failures, lost connections or locked SQLite databases.

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