MEMDB_MAXSIZE

The SQLITE_CONFIG_MEMDB_MAXSIZE option accepts a single parameter sqlite3_int64 parameter which is the default maximum size for an in-memory database created using sqlite3_deserialize(). This default maximum size can be adjusted up or down for individual databases using the SQLITE_FCNTL_SIZE_LIMIT file-control. If this configuration setting is never used, then the default maximum is determined by the SQLITE_MEMDB_DEFAULT_MAXSIZE compile-time option. If that compile-time option is not set, then the default maximum is 1073741824.