| Previous | Next |
| SQLITE_E_CONSTRAINT_TRIGGER | SQLITE_E_CONSTRAINT_UNIQUE |
SQLITE_E_IOERR_UNLOCK
SQLITE_E_IOERR_UNLOCK corresponds to SQLITE_IOERR_UNLOCK: the VFS failed in its xUnlock operation while releasing an SQLite file lock.
What to check for SQLITE_E_IOERR_UNLOCK
- Check for filesystem or VFS implementations that do not reliably support advisory file locks.
- Avoid multiple independent writers through network shares or filesystem proxies whose lock semantics are uncertain.
- Capture the SQLite journal mode and connection topology before changing concurrency settings.
PRAGMA journal_mode;SQLite: Result and Error Codes
SQLite: File Locking and Concurrency
SQLite: Network Filesystem Considerations
Verification: Capture the exact data or storage operation that reports ioerr unlock, then repeat it after changing only the implicated object or storage state.
Looking for a different code? Search another status or error code.