58P02
PostgreSQLERRORNotableSystem ErrorHIGH confidence

duplicate file

What this means

SQLSTATE 58P02 is a Postgres-specific error raised when Postgres attempts to create a file that already exists on the filesystem in a context where file uniqueness is required.

Why it happens
  1. 1A Postgres internal operation attempts to create a data file that already exists (e.g., during table space or relation creation)
  2. 2Filesystem inconsistency where a file exists that should not
How to reproduce

Internal duplicate file conflict.

expected output

ERROR:  duplicate file

Fix

Investigate filesystem and data directory consistency

WHEN When this error appears.

Why this works

Run pg_dump for a fresh backup, then investigate the data directory for unexpected files. If the error follows a failed upgrade or crash recovery, consider restoring from backup.

What not to do

Manually delete files from the Postgres data directory

Manually removing files from the data directory can corrupt the database. Always use Postgres tools.

Sources
Official documentation ↗

Class 58 — System Error (Postgres-specific)

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