All the folks who work on OA Framework(OAF) would know that there is no configuration option like we have in forms to make an OAF page read-only. Its a very common requirement.

I faced a similar situation where I had no option left but do research to find how we can make an OAF page read-only. After lot of research I found that in Release 12 Oracle Purchasing does render OAF pages in read-only mode. After decompiling hundreds of Oracle java classes I found the holy grail. A genius had written an awesome recursive function to set the read-only property on each bean in the bean hierarchy. Inspired by that code I wrote my own makeReadOnly function.

You can look at the class file oracle.apps.po.common.webui.ClientUtil.class.
The function which makes the page read-only is setViewOnlyRecursive.

All you need to do it call this function in the Process Request of your controller with following parameters (oapagecontext, oawebbean).

Below is the sample code I wrote to make the Account Overview page read-only and selectively hide columns on various tables so that user could not take any action that would lead to updation of the record. Today this is a std functionality as part of Receivables Inquiry responsibility.

/**
 * Controller for Account Overview page
 */
public class XXAcctOviewPageCO extends AcctOviewPageCO
{
  /**
   * Layout and page setup logic for a region.
   * @param pageContext the current OA page context
   * @param webBean the web bean corresponding to the region
   */
  public void processRequest(OAPageContext oapagecontext, OAWebBean oawebbean)
  {
     super.processRequest(oapagecontext, oawebbean);
     //Check if page invoked from Contact Center form.
     String currUserRole = null;
     String invokedFromForm = oapagecontext.getParameter("XXInvokedFromForm");

     if("Y".equals(invokedFromForm))
     {
       currUserRole = (String) oapagecontext.getParameter("XXModeParam");

       if(currUserRole == null)
       {
         oapagecontext.removeSessionValue("XXModeParam");
         return;
       }
       else
       {
         oapagecontext.putSessionValue("XXModeParam", currUserRole);
       }
     }
     else
     {
       currUserRole = (String) oapagecontext.getSessionValue("XXModeParam");
     }
     String custAcctSiteIdStr = oapagecontext.getParameter("XXCCAcctSiteId");


     if("Role#1".equals(currUserRole)  "Role#1".equals(currUserRole)  "ReadOnly".equals(currUserRole))
     {
         //Render the page in View-Only Mode
         ClientUtil.setViewOnlyRecursive(oapagecontext, oawebbean);

        //Disable Save and Apply Button
         OAWebBean pageButtonsBean = (OAWebBean) oapagecontext.getPageLayoutBean().getPageButtons();
         OAWebBean pageButtonBean = (OAWebBean) pageButtonsBean.findIndexedChildRecursive("Save");
         pageButtonBean.setRendered(false);
         pageButtonBean = (OAWebBean) pageButtonsBean.findIndexedChildRecursive("Apply");
         pageButtonBean.setRendered(false);

         //Enable Search Filters on Account Sites Table
         FormElementBean formElementBean = (FormElementBean)oawebbean.findIndexedChildRecursive("AcctSitesViewStatus");
         formElementBean.setReadOnly(false);
         formElementBean = (FormElementBean)oawebbean.findIndexedChildRecursive("SitePurposesFilter");
         formElementBean.setReadOnly(false);
         formElementBean = (FormElementBean)oawebbean.findIndexedChildRecursive("SiteOperatingUnitFilter");
         formElementBean.setReadOnly(false);
         formElementBean = (FormElementBean)oawebbean.findIndexedChildRecursive("ShowSitesFromOtherPartiesFilter");
         formElementBean.setReadOnly(false);
     
         //Hide Delete/Restore column on Account Sites Table
         OAColumnBean col = (OAColumnBean) oawebbean.findIndexedChildRecursive("SiteDeleteCol");
         col.setRendered(false);
         col = (OAColumnBean) oawebbean.findIndexedChildRecursive("SiteRestoreCol");
         col.setRendered(false);

         //Hide Remove column on Currencies Advanced Table
         col = (OAColumnBean) oawebbean.findIndexedChildRecursive("AdvTableC3");
         col.setRendered(false);
         //Hide Remove column on Receipt Methods Advanced Table
         col = (OAColumnBean) oawebbean.findIndexedChildRecursive("deleteColumn");
         col.setRendered(false);
     
         //Enable Search Filters on Account Contacts table
         formElementBean = (FormElementBean)oawebbean.findIndexedChildRecursive("ActContStatus");
         formElementBean.setReadOnly(false);
         formElementBean = (FormElementBean)oawebbean.findIndexedChildRecursive("ShowContResp");
         formElementBean.setReadOnly(false);

         //Enable Search Filters on Account Relationships
         formElementBean = (FormElementBean)oawebbean.findIndexedChildRecursive("RelStatusList");
         formElementBean.setReadOnly(false);
         //Hide the Remove and Restore columns on Account Relationships
         col = (OAColumnBean) oawebbean.findIndexedChildRecursive("RelRemoveCol");
         col.setRendered(false);
         col = (OAColumnBean) oawebbean.findIndexedChildRecursive("RelRestoreCol");
         col.setRendered(false);

         //Adv Table: Account Contacts
         col = (OAColumnBean) oawebbean.findIndexedChildRecursive("ConRemoveCol");
         col.setRendered(false);

         //Adv Table:Currency Rates and Conditions
         col = (OAColumnBean) oawebbean.findIndexedChildRecursive("DeleteHdr");
         col.setRendered(false);
     
         col = (OAColumnBean) oawebbean.findIndexedChildRecursive("DuplicateHdr");
         col.setRendered(false);

         //Hide Update, Remove column on Credit Cards Adv Table
         col = (OAColumnBean) oawebbean.findIndexedChildRecursive("column7");
         col.setRendered(false);
         col = (OAColumnBean) oawebbean.findIndexedChildRecursive("column8");
         col.setRendered(false);
         col = (OAColumnBean) oawebbean.findIndexedChildRecursive("column9");
         col.setRendered(false);

         //Hide Inc/Dec Priority, Update, Debit Authorization columns on Bank Account Transfer:
         col = (OAColumnBean) oawebbean.findIndexedChildRecursive("column82");
         col.setRendered(false);
         col = (OAColumnBean) oawebbean.findIndexedChildRecursive("column92");
         col.setRendered(false);
         col = (OAColumnBean) oawebbean.findIndexedChildRecursive("column102");
         col.setRendered(false);
         col = (OAColumnBean) oawebbean.findIndexedChildRecursive("column112");
         col.setRendered(false);

         //Adv Table: Attachments
         OAImageBean img = (OAImageBean) oawebbean.findIndexedChildRecursive("Delete");
         img.setRendered(false);
     }
     // Role#1 can create Sites
     if("Role#1".equals(currUserRole))
     {
        //Enable the Table Actions on Account Sites Table.
        OAAdvancedTableBean advTableBean = (OAAdvancedTableBean) oawebbean.findIndexedChildRecursive("AcctSitesTable");
        UINode tableActions = advTableBean.getTableActions();
        ((OAWebBean)tableActions).setRendered(true);

        //Enable the Delete & Restore actions on Account Sites Table.
        OAColumnBean col = (OAColumnBean) oawebbean.findIndexedChildRecursive("SiteDeleteCol");
        col.setRendered(true);
        col = (OAColumnBean) oawebbean.findIndexedChildRecursive("SiteRestoreCol");
        col.setRendered(true);
     }
  }

    /**
    * Procedure to handle form submissions for form elements in a region.
    * @param pageContext the current OA page context
    * @param webBean the web bean corresponding to the region
    */
    public void processFormRequest(OAPageContext oapagecontext, OAWebBean oawebbean)
    {
        super.processFormRequest(oapagecontext, oawebbean);
    }
}