Operations Manual
This page contains DuckDB's built-in limit values.  
| Limit | Default value | Configuration option |
|---|---|---|
| Array size | 100000 | - |
| BLOB size | 4 GB | - |
| Expression depth | 1000 | [`max_expression_depth`](#docs:configuration:overview) |
| Memory allocation for a vector | 128 GB | - |
| Memory use | 80% of RAM | [`memory_limit`](#docs:configuration:overview) |
| String size | 4 GB | - |
| Temporary directory size | unlimited | [`max_temp_directory_size`](#docs:configuration:overview) |