# S01000 {#s01000}

## Error Code {#error_code .section}

S01000

## Error Message {#error_message .section}

`TSDBEngine BlockedCacheTable::append: Failed to append to the TSDB cache engine due to xxx. RefId: S01000`

## Probable Causes {#probable_causes .section}

This error occurs when TSDB fails to write the completed transactions to the cache engine due to out-of-memory issues.

## Solutions {#solutions .section}

-   Use the [clearAllCache](../../Functions/c/clearAllCache.md) function to clear the cached data and release memory.
-   Set the configuration parameter *maxMemSize* to a larger value to increase the maximum memory allocated to DolphinDB.

**Parent topic:**[Error Code Reference](../../Troubleshooting/ErrorCode.md)

