[Node-DuckDB API](./node-duckdb.md) > [IDuckDBOptionsConfig](./node-duckdb.iduckdboptionsconfig.md) > [checkPointWALSize](./node-duckdb.iduckdboptionsconfig.checkpointwalsize.md) ## IDuckDBOptionsConfig.checkPointWALSize property Checkpoint Write Ahead Log Size (in bytes) Signature: ```typescript checkPointWALSize?: number; ```