# xSQL Tracing Framework Parameters

> The xSQL configuration file can be used to define eXtremeDB Tracing Framework parameters. (See the C API Tracing Framework page for further details).

> ### For an overview see page Configuration File Parameters

> The `trace_params` section consists of a set of "name : value" pairs enclosed within braces. For example:

>         trace_params : {
>             file : "xsql.trace",
>             severity: info,
>             options: keep_closed,
>             ...
>         }

> The following table lists the possible options for the `trace_params` section with the possible values:

> Option name : example value | Comment
> --- | ---
> file: "xsql.trace", | The filename where tracing will go. It's possible to specify "stderr" to pass all the messages to the standard error stream `stderr`
> format: "%s: %e", | Format for the messages. Allowable format specifiers are: `%s` and `%e`
> severity: info | Maximum severity for messages appearing in the trace file; possible values are: `debug, info, notice, warning, error, fatal`
> options: keep_closed | Options that control if the file will be closed and reopened for each written record; possible values are: `leave_opened, keep_closed`