HRESULT 0x87AF150A (SQLITE_E_IOERR_SHMMAP): meaning and diagnosis

Status / error code:

Category:

Constant name:

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Operating System:

Description:

SQLite could not map a WAL shared-memory segment into the process.

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SQLITE_E_IOERR_SHMLOCK	SQLITE_E_IOERR_SEEK

SQLITE_E_IOERR_SHMMAP

SQLITE_E_IOERR_SHMMAP corresponds to SQLITE_IOERR_SHMMAP. The VFS failed in xShmMap while mapping a shared-memory segment into the process address space.

What to check

Check access to the database directory and the -shm file.
Check process memory pressure, memory-mapping limits, and endpoint software that may interfere with mapped files.
Validate that WAL-mode database access is local and that all participating processes use the same filesystem view.

PRAGMA journal_mode;

SQLite: Result and Error Codes

SQLite: Write-Ahead Logging

SQLite: Temporary Files

SQLite: Network Filesystem Considerations

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