> ## Documentation Index
> Fetch the complete documentation index at: https://clickhouse.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# max_named_* server settings

> ClickHouse server settings in the max_named_* generated group.

These settings configure the ClickHouse server and are autogenerated from ClickHouse source.

## max\_named\_collection\_num\_to\_throw

Type

UInt64

Default

0

Changeable without restart

Yes

If number of named collections is greater than this value, server will throw an exception.

> [!NOTE]
>
> A value of `0` means no limitation.

**Example**

```xml theme={null}
<max_named_collection_num_to_throw>400</max_named_collection_num_to_throw>
```

## max\_named\_collection\_num\_to\_warn

Type

UInt64

Default

1000

Changeable without restart

Yes

If the number of named collections exceeds the specified value, clickhouse server will add warning messages to `system.warnings` table.

**Example**

```xml theme={null}
<max_named_collection_num_to_warn>400</max_named_collection_num_to_warn>
```