# purgeCacheEngine {#purgeCacheEngine}

Alias for [flushOLAPCache](../f/flushOLAPCache.md)

**Parent topic:**[Functions](../../Functions/category.md)

## Syntax {#syntax}

`purgeCacheEngine()`

## Arguments {#arguments}

None

## Details {#details}

Forcibly flush the data of completed transactions cached in the OLAP cache engine to the database. Specify the configuration parameter *chunkCacheEngineMemSize* and set *dataSync* = 1 before execution.

