[API reference](https://evolu.dev/docs/api-reference) › [@evolu/sqlite-wasm](https://evolu.dev/docs/api-reference/sqlite-wasm) › SahPoolHeldError

Defined in: [packages/sqlite-wasm/src/SahPool.ts:1119](https://github.com/evoluhq/evolu/blob/bc4578a260dd15d5bbf94b83765ca05984d194cb/packages/sqlite-wasm/src/SahPool.ts#L1119)

Another context or instance holds a slot of the pool. The pool wrote nothing,
and a retry succeeds once the slot is released.

In WebKit, the error can also mean that the context opening the pool is
stopping, because WebKit reports that with the same `InvalidStateError` as a
held file, so retries need a bound.

## Extends

- [`Typed`](https://evolu.dev/docs/api-reference/common/Type/interfaces/Typed)\<`"SahPoolHeldError"`\>

## Properties

<a id="cause"></a>

### cause

```ts
readonly cause: unknown;
```

Defined in: [packages/sqlite-wasm/src/SahPool.ts:1126](https://github.com/evoluhq/evolu/blob/bc4578a260dd15d5bbf94b83765ca05984d194cb/packages/sqlite-wasm/src/SahPool.ts#L1126)

What `createSyncAccessHandle` threw: `NoModificationAllowedError`, or
`InvalidStateError` in WebKit.

---

<a id="filename"></a>

### fileName

```ts
readonly fileName: string;
```

Defined in: [packages/sqlite-wasm/src/SahPool.ts:1121](https://github.com/evoluhq/evolu/blob/bc4578a260dd15d5bbf94b83765ca05984d194cb/packages/sqlite-wasm/src/SahPool.ts#L1121)

The slot's file name in [sahPoolOpaqueDirectoryName](https://evolu.dev/docs/api-reference/sqlite-wasm/variables/sahPoolOpaqueDirectoryName).

---

<a id="type"></a>

### type

```ts
readonly type: "SahPoolHeldError";
```

Defined in: packages/common/dist/src/Type.d.ts:9304

#### Inherited from

[`Typed`](https://evolu.dev/docs/api-reference/common/Type/interfaces/Typed).[`type`](https://evolu.dev/docs/api-reference/common/Type/interfaces/Typed#type)