Keywords: traceFile=path database connection URL attribute

# traceFile=path attribute

#### Function

Specifies a file to which the Derby Network Client will send JDBC trace information. If you do not specify an absolute path name, the file is placed in the derby.system.home directory (see "Defining the system directory" in the Java DB Developer's Guide for details).

If you specify both traceFile=path and traceFileAppend=true, the output is appended to the specified file, if it exists. If you specify traceFile=path but do not specify traceFileAppend=true, any previous version of the file of the file is overwritten.

For more information about tracing, see "Network client tracing" in the Java DB Server and Administration Guide. See traceDirectory=path and traceLevel=value for other attributes related to tracing.

#### Combining with other attributes

You can combine this attribute with other attributes.

#### Example

    -- enable tracing on a new database
    jdbc:derby://localhost:1527/mydb;create=true;traceFile=trace.out

Parent topic: Setting attributes for the database connection URL