How do i add a root node to a XMLType

Question

Hi all
I have a problem inserting a root node in a xml document generated by DBMS_XMLGEN.newcontextfromhierarchy. The function get_site_map_nodes generates a document like this:
<?xml version="1.0"?>
<siteMapNode f_page_id="1" title="rot" PATH="1">
<siteMapNode f_page_id="2" title="1.1" PATH="1.1">
<siteMapNode f_page_id="4" title="1.1.1" PATH="1.1.1"/>
</siteMapNode>
<siteMapNode f_page_id="3" title="1.2" PATH="1.2"/>
<siteMap/>
</siteMapNode>
This is correct but i want to add a root node so the result shows as below:
<?xml version="1.0"?>
<siteMap>
<siteMapNode f_page_id="1" title="rot" PATH="1">
<siteMapNode f_page_id="2" title="1.1" PATH="1.1">
<siteMapNode f_page_id="4" title="1.1.1" PATH="1.1.1"/>
</siteMapNode>
<siteMapNode f_page_id="3" title="1.2" PATH="1.2"/>
<siteMap/>
</siteMapNode>
</siteMap>
The problem is that i have no clue how to accomplish this.
Best regards
Daniel Carlsson
PACKAGE BODY PKG_PAGE_STRUCTURE
IS
FUNCTION get_level_path (in_page_id IN page_structure.f_page_id%TYPE)
RETURN VARCHAR2
IS
l_path VARCHAR2 (4000) := '';
BEGIN
SELECT MAX (SYS_CONNECT_BY_PATH (f_show_order, '.'))
INTO l_path
FROM page_structure
START WITH f_page_id = in_page_id
CONNECT BY PRIOR f_parent_page = f_page_id;
l_path := RTRIM (l_path, '.');
RETURN l_path;
END get_level_path;
FUNCTION get_site_map_nodes (in_page_id IN page_structure.f_page_id%TYPE)
RETURN XMLTYPE
IS
qryctx DBMS_XMLGEN.ctxhandle;
l_xml XMLTYPE;
BEGIN
qryctx :=
DBMS_XMLGEN.newcontextfromhierarchy
('select level, xmlelement("siteMapNode", XMLAttributes(f_page_id as "f_page_id",
f_title_phrase as "title", pkg_page_structure.get_level_path(f_page_id) as path))
FROM PAGE_STRUCTURE
START WITH f_page_id = :in_page_id
connect by f_parent_page = prior f_page_id
ORDER siblings BY f_show_order'
DBMS_XMLGEN.setbindvalue (qryctx, 'in_page_id', TO_CHAR (in_page_id));
l_xml := DBMS_XMLGEN.getxmltype (qryctx);
DBMS_XMLGEN.closecontext (qryctx);
RETURN l_xml;
END get_site_map_nodes;
END PKG_PAGE_STRUCTURE;
CREATE TABLE page_structure
(f_page_id NUMBER(10,0) NOT NULL,
f_parent_page NUMBER(10,0),
f_show_order NUMBER(10,0),
f_title_phrase VARCHAR2(20),
f_created_by NUMBER(10,0),
f_created_date DATE,
f_updated_by NUMBER(10,0),
f_updated_date DATE)
INSERT INTO page_structure
(F_PAGE_ID,F_PARENT_PAGE,F_SHOW_ORDER,F_TITLE_PHRASE,F_CREATED_BY,F_CREATED_DATE,F_UPDATED_BY,F_UPDATED_DATE)
VALUES
(1,NULL,1,'rot',1,'30-MAR-2006',NULL,NULL)
INSERT INTO page_structure
(F_PAGE_ID,F_PARENT_PAGE,F_SHOW_ORDER,F_TITLE_PHRASE,F_CREATED_BY,F_CREATED_DATE,F_UPDATED_BY,F_UPDATED_DATE)
VALUES
(2,1,1,'1.1',1,'30-MAR-2006',NULL,NULL)
INSERT INTO page_structure
(F_PAGE_ID,F_PARENT_PAGE,F_SHOW_ORDER,F_TITLE_PHRASE,F_CREATED_BY,F_CREATED_DATE,F_UPDATED_BY,F_UPDATED_DATE)
VALUES
(3,1,2,'1.2',1,'30-MAR-2006',NULL,NULL)
INSERT INTO page_structure
(F_PAGE_ID,F_PARENT_PAGE,F_SHOW_ORDER,F_TITLE_PHRASE,F_CREATED_BY,F_CREATED_DATE,F_UPDATED_BY,F_UPDATED_DATE)
VALUES
(4,2,1,'1.1.1',1,'30-MAR-2006',NULL,NULL)
/

Answer 1

Please try below steps.
1. Complete Prerequisite for adding cluster node
2. Verify the node is accessible to all other nodes in the cluster. Run the following command from the existing node in the cluster.
cluvfy stage -pre crsinst -n newNode
3. Run cluvfy from any existing node
cluvfy stage -pre nodeadd -n <New Node>
Note : If cluvfy in above step shows any errors fix those and then proceed with this step
4. Change Directory to Clusterware Home and execute addNode scripts from any existing node.
cd $CRS_HOME/oui/bin
./addNode.sh -silent "CLUSTER_NEW_NODES={ <NewNode > } CLUSTER_NEW_PRIVATE_NODE_NAMES={ <Interconnect >} CLUSTER_NEW_VIRTUAL_HOSTNAMES={ < Virtual Host Name >}"
At the end of addNode, script will prompt to run for root.sh on newly added node.
5. Verify Node is successfully added
cluvfy stage -post nodeadd -n <NewNode >
6. Verify CRS Stack is running on the new Node.
$CRS_HOME/bin/crs_stat -t
7. To extend the Oracle RAC Installation to include the new Node, run addNode from $ORACLE_HOME/oui/bin from existing node in the cluster
cd $CRS_HOME/oui/bin
./addNode.sh
When OUI displays the Specify Cluster Nodes to Add to Installation window, select the node to be added, then click Next .
Verify the summary and run root.sh on new node when it prompts.
8. Adding New Instance on the New Node
$CRS_HOME/bin/lsnrctl status
9.Run $ORACLE_HOME/bin/dbca from any of the existing RAC Instances Oracle Home.
Select Oracle Real Application Clusters database , and then click Next .
Select Instance Management , and then click Next .
Select Add an Instance , then click Next .
Click Next to accept default instance name or it can be changed.
Check the summary window.
Note: Please check these steps in test environment first.
HTH