[Yandex Cloud documentation](../../../index.md) > [Yandex DataLens](../../index.md) > Troubleshooting > Estimated query execution time is too long. Maximum: 14400

# [Yandex DataLens] Estimated query execution time is too long. Maximum: 14400

`ERR.DS_API.DB.EST_EXEC_TOO_LONG`

This error occurs when ClickHouse® estimates the request execution time to exceed the allowed maximum based on the current speed.

To fix this error, reduce the amount of processed data using filters, simplify joins and calculations, and use sort keys, pre-aggregation, or a materialized view.

If the request legitimately requires a longer execution time, contact the ClickHouse® administrator to review the time and execution speed limits.