JDeveloper, Java & XML :: Select Records From Table Where XML Code Complies With Requirement

I got table with column of XML codes like this:

select xmltype ('<parameters xmlns="http://datalan.sk/webreporting/params/v1_0">
<parameter name="result"><value>success</value></parameter>
<parameter name="showBirthday"><value>false</value></parameter>
<parameter name="_wrCommand"><value>clearCacheBefore</value></parameter>
</parameters>'
) val
from dual;

And I need to select records from table where xml code complies with requirement:

name="result" equals success.
name="result"><value>success</value>