SQLITE_LOCKED_SHAREDCACHE

The SQLITE_LOCKED_SHAREDCACHE result code indicates that access to an SQLite data record is blocked by another database connection that is using the same record in shared cache mode. When two or more database connections share the same cache and one of the connections is in the middle of modifying a record in that cache, then other connections are blocked from accessing that data while the modifications are on-going in order to prevent the readers from seeing a corrupt or partially completed change.