PostgresDB 08003: Connection does not exist

When an operation is attempted on a non-existent connection.

Check if the PostgreSQL service is running:
- For Linux: sudo systemctl status postgresql
- For Windows: Open Services (services.msc from Run), and check if the PostgreSQL service is running.
Verify connectivity to the PostgreSQL server:
- Use psql command: psql -h hostname -U username -d databasename replacing hostname, username, and databasename with your actual server details.
Review PostgreSQL server logs for any errors or warnings that could indicate why connections are being refused or dropped. The log location varies, but you can usually find it in the PostgreSQL data directory, often named postgresql.log or within a log directory.
Check for any firewall rules that might be blocking connections to the PostgreSQL port (default is 5432):
- For Linux, use sudo iptables -L to list firewall rules.
- For Windows, check the inbound rules in Windows Firewall.
Ensure the postgresql.conf and pg_hba.conf files are correctly configured to allow connections:
- For postgresql.conf, check the listen_addresses and port directive.
- For pg_hba.conf, ensure your client's IP and connection method (e.g., host, hostssl) are correctly specified.
Try restarting the PostgreSQL service to resolve any transient issues:
- For Linux: sudo systemctl restart postgresql
- For Windows: Restart the service from Services (services.msc).
If using a connection pooler (e.g., PgBouncer), ensure it is correctly routing connections to the PostgreSQL server and is not misconfigured or down.
Check the server's resources (CPU, RAM, disk space) to ensure it's not under heavy load or running out of resources, which could reject new connections. Use system monitoring tools:
- For Linux: commands like top, htop, df, and free.
- For Windows: Task Manager or Resource Monitor.
Verify that the database you're trying to connect to exists and is accessible:
- Connect to PostgreSQL with a superuser or a user with adequate privileges and list all databases: psql -U username -l.
If the issue persists, consider restarting your client machine or checking for any network issues that might be affecting connectivity to the server.

Never debug

PostgresDB

manually again

Let Dr. Droid create custom investigation plans for your infrastructure.

Start Free POC (15-min setup) →

Automate Debugging for

PostgresDB

See how Dr. Droid creates investigation plans for your infrastructure.

Start Free POC →

MORE ISSUES

PostgresDB 53100: Disk full

When the disk storage is full and cannot accommodate more data.

PostgresDB XX001: Data corrupted

Raised when data corruption is detected within the database.

PostgresDB XX000: Internal error

Represents an internal error that should not normally occur

PostgresDB 0A000: Feature not supported

Occurs when attempting to use a feature that is not supported by PostgreSQL.

PostgresDB 57P01: Admin shutdown

Thrown when the database is shut down administratively

PostgresDB 58000: System error

Represents a general system error

PostgresDB 53200: Out of memory

When the database server runs out of memory during an operation.

PostgresDB 22001: String data right truncation

Happens when the data is too large for the target column.

PostgresDB 08003: Connection does not exist

When an operation is attempted on a non-existent connection.

PostgresDB 22007: Invalid datetime format

When the provided date or time format is invalid.

PostgresDB 22012: Division by zero

Occurs when there's an attempt to divide a number by zero.

PostgresDB 22003: Numeric value out of range

Thrown when a numeric value exceeds the range of the target column.

PostgresDB 08001: SQL client unable to establish SQL connection

Occurs when the client is unable to connect to the database server.

PostgresDB 40001: Transaction rollback

Indicates that the transaction was rolled back

PostgresDB 40P01: Deadlock detected

Raised when a deadlock situation is detected within a transaction.

PostgresDB 08006: Connection failure

Happens when the connection to the database fails.

PostgresDB 40001: Serialization failure

Thrown during a transaction if a serialization issue occurs.

PostgresDB 42P18: Indeterminate Datatype

The data type could not be determined.

PostgresDB 23514: Check violation

Happens when a CHECK constraint is not satisfied.

PostgresDB 23503: Foreign key violation

When a foreign key constraint is violated.

PostgresDB 23502: Not null violation

Occurs when a null value is inserted into a column with a NOT NULL constraint.

PostgresDB 23505: Unique violation

Thrown when a duplicate value violates a unique constraint.

PostgresDB 40002: Transaction Integrity Constraint Violation

The transaction violated an integrity constraint.

PostgresDB 42602: Invalid name

Happens when an identifier is invalid.

PostgresDB 42501: Insufficient privilege

When a user lacks the necessary permissions to perform an action.

PostgresDB 42601: Syntax error

Occurs when there's a mistake in the SQL syntax.

PostgresDB 42P21: Collation Mismatch

Mismatch in collation settings.

PostgresDB 42622: Name Too Long

The provided name exceeds the maximum allowed length.

PostgresDB 42804: Datatype Mismatch

Data type mismatch in the SQL statement.

PostgresDB 42939: Reserved Name

Attempted to use a reserved name.

PostgresDB 42602: Invalid Name

The specified name is invalid.

PostgresDB 42830: Invalid Foreign Key

Foreign key constraint is invalid.

PostgresDB 42P19: Invalid Recursion

Invalid use of recursion in a query.

PostgresDB 42846: Cannot Coerce

Unable to coerce a value to the required type.

PostgresDB 42P20: Windowing Error

Error in the window function.

PostgresDB 42803: Grouping Error

Error in the GROUP BY clause.

PostgresDB 42601: Syntax Error

Invalid syntax in the SQL statement.

PostgresDB 42501: Insufficient Privilege

Lacking sufficient privileges to perform the operation.

PostgresDB 42000: Syntax Error or Access Rule Violation

General syntax error or access rule violation.

PostgresDB 40P01: Deadlock Detected

Deadlock detected among transactions.

PostgresDB 40000: Transaction Rollback

General transaction rollback occurred.

PostgresDB 3F000: Invalid Schema Name

The specified schema name is invalid.

PostgresDB 40003: Statement Completion Unknown

The result of the SQL statement is unknown.

PostgresDB 3D000: Invalid Catalog Name

The specified catalog name is invalid.

PostgresDB 40001: Serialization Failure

Transaction could not be serialized due to a conflict.

PostgresDB 3B001: Invalid Savepoint Specification

The savepoint specification is invalid.

PostgresDB 38002: Modifying SQL Data Not Permitted

Modifying SQL data is not allowed in the external routine.

PostgresDB 3B000: Savepoint Exception

General savepoint exception occurred.

PostgresDB 39004: Null Value Not Allowed

Null value was not allowed in the external routine.

PostgresDB 39001: Invalid SQLSTATE Returned

An invalid SQLSTATE was returned by the external routine.

PostgresDB 39000: External Routine Invocation Exception

General external routine invocation exception.

PostgresDB 38004: Reading SQL Data Not Permitted

Reading SQL data is not allowed in the external routine.

PostgresDB 38003: Prohibited SQL Statement Attempted

Prohibited SQL statement was attempted in the external routine.

PostgresDB 38001: Containing SQL Not Permitted

SQL is not allowed in the external routine.

PostgresDB 34000: Invalid Cursor Name

The specified cursor name is invalid.

PostgresDB 38000: External Routine Exception

General external routine exception occurred.

PostgresDB 2F004: Reading SQL Data Not Permitted

Reading SQL data is not allowed in the current context.

PostgresDB 2F003: Prohibited SQL Statement Attempted

Prohibited SQL statement was attempted.

PostgresDB 2F002: Modifying SQL Data Not Permitted

Modifying SQL data is not allowed in the current context.

PostgresDB 2F005: Function Executed No Return Statement

Function executed without returning a value.

PostgresDB 25P02: In Failed SQL Transaction

SQL transaction is in a failed state.

PostgresDB 2F000: SQL Routine Exception

General SQL routine exception.

PostgresDB 2D000: Invalid Transaction Termination

Transaction termination is invalid.

PostgresDB 2BP01: Dependent Objects Still Exist

Dependent objects still exist in the database.

PostgresDB 28P01: Invalid Password

Provided password is invalid.

PostgresDB 2B000: Dependent Privilege Descriptors Still Exist

Dependent privilege descriptors are still present.

PostgresDB 26000: Invalid SQL Statement Name

The specified SQL statement name is invalid.

PostgresDB 25006: Read Only SQL Transaction

Attempted modification in a read-only transaction.

PostgresDB 27000: Triggered Data Change Violation

Data change violation triggered by the operation.

PostgresDB 28000: Invalid Authorization Specification

Authorization specification is invalid.

PostgresDB 25P03: Idle in Transaction Session Timeout

Transaction session timed out due to idleness.

PostgresDB 25P01: No Active SQL Transaction

No active SQL transaction to execute.

PostgresDB 25007: Schema and Data Statement Mixing Not Supported

Mixing schema and data statements is not supported.

PostgresDB 25005: No Active SQL Transaction for Branch Transaction

No active SQL transaction for a branch transaction.

PostgresDB 25004: Inappropriate Isolation Level for Branch Transaction

Inappropriate isolation level for a branch transaction.

PostgresDB 25008: Held Cursor Requires Same Isolation Level

Held cursor requires the same isolation level.

PostgresDB 25003: Inappropriate Access Mode for Branch Transaction

Inappropriate access mode for a branch transaction.

PostgresDB 25001: Active SQL Transaction

SQL transaction is already active.

PostgresDB 25002: Branch Transaction Already Active

A branch transaction is already active.

PostgresDB 22P04: Bad Copy File Format

Invalid format in a COPY file.

PostgresDB 25000: Invalid Transaction State

Transaction is in an invalid state.

PostgresDB 24000: Invalid Cursor State

Operation attempted on a cursor in an invalid state.

PostgresDB 23505: Unique Violation

Duplicate value violates a unique constraint.

PostgresDB 23001: Restrict Violation

Violation of a RESTRICT constraint.

PostgresDB 23P01: Exclusion Violation

An exclusion constraint was violated.

PostgresDB 23514: Check Violation

A CHECK constraint was violated.

PostgresDB 23503: Foreign Key Violation

A foreign key constraint was violated.

PostgresDB 23502: Not Null Violation

Null value was inserted into a column with a NOT NULL constraint.

PostgresDB 23000: Integrity Constraint Violation

A general integrity constraint violation occurred.

PostgresDB 2200T: Invalid XML Processing Instruction

The XML processing instruction is invalid.

PostgresDB 2200S: Invalid XML Comment

The XML comment is invalid.

PostgresDB 2200N: Invalid XML Content

Content within the XML is invalid.

PostgresDB 2200M: Invalid XML Document

The XML document is invalid.

PostgresDB 2200L: Not an XML Document

The provided data is not a valid XML document.

PostgresDB 22P05: Untranslatable Character

Character could not be translated.

PostgresDB 22P03: Invalid Binary Representation

Binary representation of a value is invalid.

PostgresDB 22P02: Invalid Text Representation

Text representation of a value is invalid.

PostgresDB 22P01: Floating Point Exception

Floating point operation caused an exception.

PostgresDB 2200F: Zero Length Character String

Character string has zero length.

PostgresDB 22024: Unterminated C String

C string was not properly terminated.

Backed by

Platform

Resources

Contact

Connect

Made with ❤️ in & 🏢

Doctor Droid