# clearAllCache {#clearallcache}

## Syntax {#syntax}

`clearAllCache()`

## Arguments {#arguments}

None

## Details {#details}

Clear the following cached data:

-   the data of dimension table stored in memory
-   the data of OLAP DFS tables that has been loaded into memory
-   the cached level file index of TSDB engine
-   the cached SYMBOL base of TSDB engine
-   the intermediate results of the map-reduce tasks in distributed computing

## Examples {#examples}

```
clearAllCache();
```

