[API reference](https://evolu.dev/docs/api-reference) › [@evolu/sqlite-wasm](https://evolu.dev/docs/api-reference/sqlite-wasm) › [c-api](https://evolu.dev/docs/api-reference/sqlite-wasm/c-api) › sqlite3\_trace\_v2

```ts
function sqlite3_trace_v2(
  deps: SqliteWasmDep,
): (
  db: SqliteDbPtr,
  uMask: number,
  xCallback: 0 | SqliteFunctionPtr,
  pCtx: 0 | WasmPtr,
) => SqliteResultCode;
```

Defined in: [packages/sqlite-wasm/src/CApi.ts:1774](https://github.com/evoluhq/evolu/blob/bc4578a260dd15d5bbf94b83765ca05984d194cb/packages/sqlite-wasm/src/CApi.ts#L1774)

Registers the connection's one trace callback for the SQLITE_TRACE_* events
in uMask, replacing any previous one; a NULL callback or a zero mask disables
tracing. The callback receives the event code, pCtx and two event-specific
pointers, and should return 0.

Wasm type `i(iiii)`. Signature `["sqlite3_trace_v2", "int", "sqlite3*",
"int", "funcptr:i(ippp)", "*"]` from SQLite's table.

See https://sqlite.org/c3ref/trace_v2.html.