HRESULT 0x87AF140A (SQLITE_E_IOERR_SHMLOCK): meaning and diagnosis

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Description:

A legacy SQLite WAL shared-memory lock status was reported.

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SQLITE_E_IOERR_SHMSIZE	SQLITE_E_IOERR_SHMMAP

SQLITE_E_IOERR_SHMLOCK

SQLITE_E_IOERR_SHMLOCK corresponds to a SQLite result code that current SQLite documentation marks as no longer used by the core.

Record the SQLite version and whether a custom VFS or legacy SQLite build is present.
Inspect application logs for a neighboring WAL or VFS error that identifies the real operation.
Do not infer that ordinary SQL contention is the cause; this legacy status concerns implementation-level shared-memory locking.

SELECT sqlite_version();