SQLITE_IOERR_TRUNCATEFATALTier 3 — Handle with care⚠️ MEDIUM confidenceI/O error during file truncation
Category: I/O ErrorVersions: 3.0+
🔴 Production Risk Error
Critical — database file may be left in an inconsistent size.
What this means
SQLITE_IOERR_TRUNCATE (1546) is returned when the OS reports an error during ftruncate() on the database or journal file. This can happen when freeing space after a transaction.
Why it happens
- 1Hardware failure during file truncation.
- 2Filesystem does not support ftruncate() (e.g., certain network filesystems).
- 3Insufficient permissions to modify file size.
How to reproduce
File truncation after a transaction commit or WAL checkpoint.
trigger — this will ERROR
# Surfaces as disk I/O error during or after COMMITsqlite3.DatabaseError: disk I/O error
Fix 1
Why this works
Check disk health and filesystem for errors.
Fix 2
Why this works
Ensure the process has write permission to the database file.
Fix 3
Why this works
Use a local filesystem instead of a network mount.
Sources
📚 Official docs: https://www.sqlite.org/rescode.html#ioerr_truncate
🔧 Source ref: sqlite3.h — SQLITE_IOERR_TRUNCATE = 1546
Confidence assessment
⚠️ MEDIUM confidence
Stable.
See also
⚙️ This error reference was generated with AI assistance and reviewed for accuracy. Examples are provided to illustrate common scenarios and may not cover every case. Always test fixes in a development environment before applying to production. Spotted an error? Suggest a correction →