SQLITE_IOERR_CLOSE
SQLiteWARNINGNotableI/O Errorofficial confidence
I/O error closing file descriptor
Production Risk
Medium — indicates possible write-back failure; check disk.
What this means
SQLITE_IOERR_CLOSE (4106) is returned when close() on a database-related file descriptor returns an error. On Linux, close() errors are rare but may indicate a write-back failure.
Why it happens
- 1OS write-back error on close() (Linux: EIO flushing dirty pages).
- 2File descriptor already closed (double-close bug in VFS).
How to reproduce
SQLite connection close when the OS close() syscall fails.
trigger — this will error
trigger — this will error
# Surfaces when closing database connection conn.close() # may raise OperationalError in some drivers
expected output
sqlite3.OperationalError: disk I/O error
Fix 1
Fix 2
Sources
Official documentation ↗
sqlite3.h — SQLITE_IOERR_CLOSE = 4106
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