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C:/app/Administrator/product/11.2.0/dbhome_1/RDBMS/xml/orarep/

files >> C:/app/Administrator/product/11.2.0/dbhome_1/RDBMS/xml/orarep/report_ref.xsd

 <?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">
  <!-- Report ref tag: we provide a regular expression to do some matching on the report ref content.  This code makes sure that
       it's at least of the form /orarep/comp/rep?p1=v1&p2=v2&p3=v3 -->
  <xs:simpleType name="reportRefType">
    <xs:restriction base="xs:string">
      <xs:pattern value="/orarep/[a-z0-9_]+/[a-z0-9_]+(\?[^&amp;\\/\?=]+=[^&amp;\\/\?=]+(&amp;[^&amp;\\/\?=]+=[^&amp;\\/\?=]+)*)?"/>
    </xs:restriction>
  </xs:simpleType>
  <xs:element name="report_ref" type="reportRefType"/>
</xs:schema>