Users, Roles, Restricted access

Question

We have several databases on several different platforms and a multitude of schemas spread across this "grid". We also have several "home grown" web pages that curerently present "read only" information about these databases, their contents (schemas) and connect string information, space available, tablespace usage etc. all driven by cgi scripts and other scripts that query the databases v$views or even have small databases containing specific schema related information to provide this information. The developers have one, the QA folks have a different one, the support group has a different one, but they all present very similar information. Us DBA's use EM.
I have been tasked to try to "coalese" all these into a single source and was entertaining the concept of using the OEM console as a single point of reference for all this information since it is pretty much available there already or can be included there by creating "custom reports" on the reports tab. I have been able to create some of these reports already and they look good.
Now, I want to allow many of these users who are not DBA's but who are "developers", QA engineers, Support technicians, to view all this but I do NOT want to allow them to make any kind of DBA type changes directly from their OEM session.
The way it is right now all I have is the "Super Administrator" SYSMAN account.
Any ideas on how to limit the functional access to this product without necessarily limiting the "viewing" access. I mean I'd like a developer to be able to see for instance the amount of free space in a tablespace on an instance but NOT change anything...like NOT add a datafile or anything.
Am I trying to use the EM in a way it was never intended? Is this whole thing a "bad idea". Please give me your opinions?

Answer 1

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.StringReader;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.CharacterData;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
public class XMLParsingProj {
public static void main(String arg[]) throws Exception {
String xmlData = "";
FileReader fileReader = new FileReader(new File("XMLData.xml"));
BufferedReader bufReader = new BufferedReader(fileReader);
String xmlLine = "";
while ((xmlLine = bufReader.readLine()) != null) {
xmlData += xmlLine;
System.out.println("String Value is");
System.out.println(xmlData);
DocumentBuilder db = DocumentBuilderFactory.newInstance().newDocumentBuilder();
InputSource is = new InputSource();
is.setCharacterStream(new StringReader(xmlData));
Document doc = db.parse(is);
NodeList nodes = doc.getElementsByTagName("soap:Envelope");
for (int i = 0; i < nodes.getLength(); i++) {
Element element = (Element) nodes.item(i);
NodeList name = element.getElementsByTagName("soap:Body");
Element line = (Element) name.item(0);
System.out.println("Name: " + line.getTagName());
NodeList title = element.getElementsByTagName("lookupResponse");
line = (Element) title.item(0);
System.out.println("Status: " + line.getAttribute("status"));
System.out.println("data node length :" + nodes.getLength());
}