Query in XMLType

I have stored a typical Purchase Order List as XMLType in
Oracle. The structure looks roughly as -
<polist>
<po>
<customer>
<lineitems>
<lineitem>
<item>
<price>
<quantity>
So my polist has multipe po's and each po's has multipe items.
Now, I want to perform following xpath query -
- /polist/po/lineitems/lineitem/item[price="$100"]
In other words, find me an "item with specific price" from list
of all the items in all the po's in my polist.
From what I understand, predicates are not support by XPATH in
Oracle. How can I achieve this using SQL & Extract/exist ?
Any thoughts ??
--Naren

Steve:
Thanks for your response. Your solution works !! BTW, your book
has been very handy in my work.
Now, I am taking the same PO and trying to store it into
seperate tables. My document structure is similar to Example 12-
20 in your book (Oracle XML Applications) - department with
several employees. In my case, I have a purchase order with
several lineitems.
Essentially, I followed the example and got the code (written by
you) from Oreilly website to make it work with my example. Now
the problem is when I use putXML to save, the first level gets
saved with no problem.
So, as shown in the snippet below -
>>>>
<?xml version="1.0" encoding='UTF-8'?>
<ROWSET>
<ROW>
<PO_ID>10</PO_ID>
<LINEITEMS>
<LINEITEM>
<ID>7782</ID>
<PRICE>100</PRICE>
<TAXRATE>24</TAXRATE>
<QUANTITY>20</QUANTITY>
<DISCOUNT>10</DISCOUNT>
</LINEITEM>
>>>>
If I don't include the "LINEITEM" data, the instead of trigger
fires properly and the PO_ID makes it to the po_table when I
use "putXML" utility.
BTW, I modeled everything like example 12-20 - po_table,
lineitem_table, lineitem_type, lineitem_list, instead of
trigger, po_view, etc...
Now, when I try to use the "putXML" to insert data at both
levels - po and lineitem as shown in above snippet of input xml
doc, I get the following exception -
java OracleXML putXML -user "scott/tiger" -fileName bar.xml po_view
oracle.xml.sql.OracleXMLSQLException: 'java.sql.SQLException:
Non supported character set: oracle-ch
aracter-set-178' encountered during processing ROW element 0.
All prior XML row changes were rolled
back. in the XML document.
at oracle.xml.sql.dml.OracleXMLSave.saveXML
(OracleXMLSave.java:2298)
at oracle.xml.sql.dml.OracleXMLSave.saveXML
(OracleXMLSave.java:2175)
at oracle.xml.sql.dml.OracleXMLSave.insertXML
(OracleXMLSave.java:1264)
at OracleXML.Put_XML(OracleXML.java:467)
at OracleXML.ExecutePutXML(OracleXML.java:389)
at OracleXML.main(OracleXML.java:177)
I tried several variation by changing the encoding in my XML
document to - UTF-8, Unicode, etc..
I am using Oracle 9i (9.0.1.1) on windows 2000.
If you need additional information, please let me know !!
--Naren

Similar Messages

Query on XMLType! URGENT!!!

Please, what the most efficient way to query a xmltype column?
My xml's are 250KB ~ 1.5 MB and my table have over 130.000 records.
I have tried:
1) interMedia -> create index [indexname] on [table] (field) indextype is ctxsys.context parameters ('section group path_section_group')
but results a error on creating...
2) Table Functions, but a enough memory error results...
3) create index on xpath directly, but the repetead tag's are discarded...
I don't know what to do...
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Thanks...
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Query about XMLTYPE column structured storage in Oracle Xml db

Dear All,
DB Version: Oracle 11g (11.2.0.3.0)
I have an table having one column as XMLTYPE with Structured storage.
CREATE TABLE Orders
    Order_id NUMBER NOT NULL,
    Order_etc VARCHAR2(100),
    Order_desc XMLType NOT NULL
    XMLTYPE Order_desc STORE AS OBJECT RELATIONAL XMLSCHEMA "http://localhost/public/xsd/order_desc_xsd.xsd" ELEMENT "OrderState";
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Before this table creation I had created a table (db_objects) of XMLTYPE and was able to use the below query to check for what all objects the XMLTYPE table got broken into when I registered its XSD.
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Many Thanks.

First given that you are on 11.2, ExtractValue is deprecated and the documentation lists three options to use instead. Here is one option (untested)
SELECT owner, object_name, object_type, object_id, created
FROM db_objects do,
       XMLTable('/ROWSET/THISROW'
                PASSING do.object_value
                COLUMNS
                -- Set data types accordingly
                owner        VARCHAR2(20) PATH 'owner',
                object_name VARCHAR2(20) PATH 'object_name',
                object_type VARCHAR2(20) PATH 'object_type',
                object_id    VARCHAR2(20) PATH 'object_id',
                created      VARCHAR2(20) PATH 'created');
Second, why does column order matter? You are storing in an object relational method. As long as the XML is valid per the schema, the Oracle will be able to store the data and later retrieve it as well. How that data is stored is mostly Oracle internals and should not be touched as it can be changed from version to version. You can use schema annotation to control how Oracle maps and stores the XML, but nothing in there specifies column order that I am aware of.
It seems additional details are missing as to what you need the information for so that would help others answer your question.

Problem query of XMLType column in XSQL servlet

Hi all,
I'm having trouble debugging the following error from a query on an XMLType column in an XSQL page query:
<page xmlns:xsql="urn:oracle-xsql" connection="jdbc/DBConnection1DS">
<xsql:query max-rows="1" null-indicator="no">
SELECT extractValue(x.DOCBOOKS_DOC, '/book/part/title', 'xmlns="http://docbook.org/ns/docbook"') "BOOK TITLE"
FROM DOCBOOKS_STORE x
</xsql:query>
</page>
which returns the following error message:
<page>
<ERROR>
oracle.xml.sql.OracleXMLSQLException: Character ' ' is not allowed in an XML tag name.
</ERROR>
</page>
The SQL query works fine in the SQL Worksheet and SQL Plus, only when I stick it in an XSQL query. I've tested the XSQL Page environment with a query on Number Datatype column and no issues there either.
Any suggestions, much appreciated. Thanks.
George

The XML SQL Utility creates XML tags named after your column aliases.
You have aliased the column to a name containing a space: "BOOK TITLE"
This error is telling you that the implied XML element whose name matches this column alias, which would be <BOOK TITLE> is not a legal name for an XML element since it has a space in it.
You'll need to pick a column alias with no space in the name. For example, "BOOK_TITLE" and then in your XSLT stylesheet (or whatever downstream formatting tool you may be using) remove the underscore from the name and replace it with a space.

Query using xmltype not working

I have a table rad_reports that has an xmltype column, report_txt. This query shows that I have a document in the db:
select r.report_txt.extract('/REPORT/IMPRESSION').getStringVal() from rad_reports r
where accession=12;
and it shows:
<IMPRESSION>
this is a test
</IMPRESSION>
But the following query results in "no rows selected":
select r.report_txt.getclobval()
from rad_reports r
where contains(report_txt, 'test INPATH(/REPORT/IMPRESSION)')>0;
Furthermore, this query also returns no results:
select count(*) from rad_reports r
WHERE CONTAINS(report_txt,'HASPATH(/REPORT/IMPRESSION)') > 0;
What's going wrong?

Please post the index creation script.

Update query for XMLTYPE column

Hello everyone,
I have inserted xml data into XMLTYPE column of my table,xml data is something like this
<Data type="FYI">
<ID xmlns="http://orcl.com">T-1-1</ID>
<Category>FRAME</Category>
<ProductID>1</ProductID>
<Name xmlns="http://orcl.com">Frame </Name>
<Type>BASIC</Type>
<Code>INSTALL</Code>
<NodeID>1</NodeID>
</Data>
Now i need to update the values inside the <Data> element,like
ID == T-2-2
Category == IFRAME
ProductID == 1.1
Name == IFRAME
We are using oracle 10g R2.
Please help me out how to update. It would be very thankfull for your valuble suggestions
Thanks in advance

<Services>
<DataService type="FRLY">
<ID xmlns="http://www.openapplications.org/oagis/9">T-1-1-FRLY</ID>
<CategoryCode>FRAME</CategoryCode>
<ProductOfferingID>1</ProductOfferingID>
<Name xmlns="http://www.openapplications.org/oagis/9">Frame Relay</Name>
<SubType>FRLY - BASIC</SubType>
<ActionCode>INSTALL</ActionCode>
<NodeID>1</NodeID>
<Contract>
<ID xmlns="http://www.openapplications.org/oagis/9" schemeName="Networx Universal">00000</ID>
<Category name="Contract Type">U</Category>
</Contract>
<Contract>
<Type xmlns="http://www.openapplications.org/oagis/9">Routine</Type>
</Contract>
<CustomerParty>
<Location/>
</CustomerParty>
<ProvisioningStatus type="BillingSetup">
<Description xmlns="http://www.openapplications.org/oagis/9">C</Description>
</ProvisioningStatus>
<MileStone>
<ID xmlns="http://www.openapplications.org/oagis/9">CWD</ID>
<Date>2007-01-29</Date>
</MileStone>
<ActivityStatus>
<Code xmlns="http://www.openapplications.org/oagis/9" name="DueDate"/>
<EffectiveDateTime xmlns="http://www.openapplications.org/oagis/9">2007-01-29T00:00:00Z</EffectiveDateTime>
</ActivityStatus>
<AssociatedIDs>
<ID xmlns="http://www.openapplications.org/oagis/9">1</ID>
</AssociatedIDs>
<AssociatedIDs>
<TemporaryID schemeName="OPKEY">34908</TemporaryID>
</AssociatedIDs>
<Location>
<ID xmlns="http://www.openapplications.org/oagis/9">T-510092</ID>
</Location>
<OrderID>RequestID</OrderID>
<Accessory>
<ActionCode>ADD</ActionCode>
<Description xmlns="http://www.openapplications.org/oagis/9">IBM ESERVER-XSERIES306</Description>
<CategoryCode>5</CategoryCode>
<InstallVendorParty>
<Name xmlns="http://www.openapplications.org/oagis/9">MCI</Name>
</InstallVendorParty>
</Accessory>
<Circuit>
<ID xmlns="http://www.openapplications.org/oagis/9">T-1-1-FRLY</ID>
<AssociatedIDs/>
</Circuit>
</DataService>
</Services>
This was my xml which i have inserted into DB for the column XMLTYPE.Now i need to update few values in this whole file like values of
ID under<DataService>
Name under <DataService>
ID under <Contract>
Description under <ProvisioningStatus>
i was using the UPDATEXML query to update those it's saying i row updated but when i extract it says null.
Please help me out to solve this problem.
Thanks in advance.

XPath query against XMLType

Hello,
I am trying to reproduce the following XPath query using XDB functionality against a XMLType column:
//AtomicPart[@MyID='190' or @MyID='495' or @MyID='1662']
If I do the following I do get all AtomicParts:
select X.xml.extract('//AtomicPart') FROM TEST X
But I havent figured out how to do the or operation. Is it possible or does it require views?
Thank you,
Robert

Robert
Need to see the instance document in order to answer this..

Simple query on xmltype not working

I have a table rad_reports that has an xmltype column, report_txt. This query shows that I have a document in the db:
select r.report_txt.extract('/REPORT/IMPRESSION').getStringVal() from rad_reports r
where accession=12;
and it shows:
<IMPRESSION>
this is a test
</IMPRESSION>
But the following query results in "no rows selected":
select r.report_txt.getclobval()
from rad_reports r
where contains(report_txt, 'test INPATH(/REPORT/IMPRESSION)')>0;
What's going wrong?

Wrong forum.. queries using contains should be posted in the oracle text forum..

XMLDB query on XmlType Column.

Hi,
Ive some problems.
Ive some search queries which are working on normal relation table, but I dont know how it works on XMLDB(Oracle 10gR2)
Structure of XML file
My xml table structure will be :
Create table <tablename>
Person_Id number primary key,
Person_BankName varchar2,
DateOfEntry date,
Xmlcol xmltype
Xmlcol xmltype will be mapped to a schema for the below xml file.
XML File
<Person>
     <Information>
          <firstname>Suchendra</firstname>
          <lastname>Kumar</lastname>
          <middlename>Krishna</middlename>
     </Information>
     <Account>
          <accountno>12212</accountno>
          <balance>42323.89</balance>
          <opendate>12-03-2005</opendate>
     </Account>
     <Transaction>
          <transamount>1000</transamount>
          <balance>41323.89</balance>
          <trandate>14-03-2005</ trandate >
          <trantime>10:40:22</trantime>
     </ Transaction >
</Person>
SQL Queries Required
1.     Query to fetch the records whose transaction has been done from date 12-03-2001 to date 01-01-2005.
2.     Query to fetch the records whose lastname= *Kumar
3.     Query to fetch the records whose transaction has been done from time 9:09:55 to time12:26:23.
4.     Query to fetch the records whose balance > 4000 and balance < 5000.
5.     Regular expression Search in XMLDB. Ex: searching for records whose firstname has su* or *ab in it.
Can anyone help me in this..
Thanks
Athar

1. select *
from <tablename>
where extractValue(Xmlcol, '/Person/trandate') is between '12-03-2001' and '01-01-2005';
2. select *
from <tablename>
where extractValue(Xmlcol, '/Person/lastname') like '*Kumar';
3. select *
from <tablename>
where extractValue(Xmlcol, '/Person/trantime') is between '9:09:55' and '12:26:23';
4. select *
from <tablename>
where extractValue(Xmlcol, '/Person/balance') > 4000'
and extractValue(Xmlcol, '/Person/balance') < 5000;
5. select *
from <tablename>
where extractValue(Xmlcol, '/Person/firstname') like 'su*'
or extractValue(Xmlcol, '/Person/firstname') like *ab;
Regards,
Kamal Shrivastava

Query on XMLType

Folks:
Can I perform queries below on XMLType -
1. /polist/po/lineitems/lineitem/item[price="$300"]
2. /polist/po[lineitems/lineitem/item[taxrate="3%"]]
3. //item
Where I the "xml file" has list of traditional po's.
--naren

Yes.
With the 9.0.1.1 maintenance release of Oracle9i (I've tried it
on Windows NT) you have the full capability of XPath available
to you in the extract() and existsNode() methods
on XML Type.
Make sure that if you query for "$300" that you really have the
string "$300" and not the number 300, otherwise, you should use
the predicate xxx = 300 instead of xxx = "$300"

Why Is Query Against XMLTYPE Table ACME_CUST Doing A Full Table Scan?

On our Oracle Database 11g Enterprise Edition Release 11.2.0.1.0, we have a query against against a 25,214 record XMLTYPE ACME_CUST table.
SELECT rownum   AS seq,
      EID AS eid,
      SUBSTR(CUST_ID, 1, INSTR(CUST_ID, '|')-1) AS tgt_acme_customer_id,
      SUBSTR(CUST_ID, INSTR(CUST_ID, '|')   +1) AS src_acme_customer_id_list
    FROM
      (SELECT ac.eid EID,
        listagg(ac.acme_cust_id, '|') WITHIN GROUP (
      ORDER BY ac.acme_cust_id, ac.acme_cust_id) CUST_ID
      FROM ACME_CUST ac
      GROUP BY ac.eid
      HAVING COUNT(ac.acme_cust_id)>1)Explain plan shows:
Select Statement
Count
VIEW
FILTER
Filter Predicates
COUNT(*) > 1
SORT GROUP BY
TABLE ACCESS ACME_CUST FULL
The ACME_CUST Table has a virtual column defined on acme_cust_id along with a corresponding index. This filed is also defined as a primary key.
Here is the table definitiion and associated statements:
CREATE
TABLE "N98991"."ACME_CUST" OF XMLTYPE
    CONSTRAINT "ACME_CUST_ID_PK" PRIMARY KEY ("ACME_CUST_ID") USING INDEX
    PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE(INITIAL 65536
    NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1
    FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE
    DEFAULT) TABLESPACE "ACME_DEV" ENABLE
XMLTYPE STORE AS SECUREFILE BINARY XML
    TABLESPACE "ACME_DEV" ENABLE STORAGE IN ROW CHUNK 8192 CACHE READS LOGGING
    NOCOMPRESS KEEP_DUPLICATES STORAGE(INITIAL 106496 NEXT 1048576 MINEXTENTS 1
    MAXEXTENTS 2147483645 PCTINCREASE 0 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT
    CELL_FLASH_CACHE DEFAULT)
ALLOW NONSCHEMA ALLOW ANYSCHEMA VIRTUAL COLUMNS
    "EID" AS (CAST(SYS_XQ_UPKXML2SQL(SYS_XQEXVAL(XMLQUERY(
    'declare default element namespace "http://www.cigna.com/acme/domains/customer/customerprofile/2011/11"; (::)
/customerProfile/@eid'
    PASSING BY VALUE SYS_MAKEXML(128,"XMLDATA") RETURNING CONTENT ),0,0,
    16777216,0),50,1,2) AS VARCHAR2(15))),
*bold* "ACME_CUST_ID" AS (CAST(SYS_XQ_UPKXML2SQL(SYS_XQEXVAL(XMLQUERY(
    'declare default element namespace "http://www.cigna.com/acme/domains/customer/customerprofile/2011/11"; (::)
/customerProfile/@id' *bold*
    PASSING BY VALUE SYS_MAKEXML(128,"XMLDATA") RETURNING CONTENT ),0,0,
    16777216,0),50,1,2) AS VARCHAR2(50))),
    "CRET_DT" AS (SYS_EXTRACT_UTC(CAST(TO_TIMESTAMP_TZ(SYS_XQ_UPKXML2SQL(
    SYS_XQEXVAL(XMLQUERY(
    'declare default element namespace "http://www.cigna.com/acme/domains/customer/customerprofile/2011/11"; (::)
/customerProfile/@create_dt'
    PASSING BY VALUE SYS_MAKEXML(128,"XMLDATA") RETURNING CONTENT ),0,0,
    16777216,0),50,1,2),'SYYYY-MM-DD"T"HH24:MI:SS.FFTZH:TZM') AS TIMESTAMP
WITH
TIME ZONE)))
PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING STORAGE
    INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0
    FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT
    CELL_FLASH_CACHE DEFAULT
TABLESPACE "ACME_DEV" ;
CREATE
INDEX "N98991"."ACME_CST_CRET_DT_IDX" ON "N98991"."ACME_CUST"
    "CRET_DT"
PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE
    INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0
    FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT
    CELL_FLASH_CACHE DEFAULT
TABLESPACE "ACME_DEV" ;
CREATE
INDEX "N98991"."ACME_CST_EID_IDX" ON "N98991"."ACME_CUST"
    "EID"
PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE
    INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0
    FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT
    CELL_FLASH_CACHE DEFAULT
TABLESPACE "ACME_DEV" ;
*bold*CREATE UNIQUE INDEX "N98991"."ACME_CUST_ID_PK" ON "N98991"."ACME_CUST"
    "ACME_CUST_ID"
PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE *bold*
    INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0
    FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT
    CELL_FLASH_CACHE DEFAULT
TABLESPACE "ACME_DEV" ;
CREATE
    INDEX "N98991"."ACME_CUST_XMLINDEX_IX" ON "N98991"."ACME_CUST"
      OBJECT_VALUE
    INDEXTYPE IS "XDB"."XMLINDEX" PARAMETERS
      'XMLTABLE ACME_CUST_IDX_TAB XMLNamespaces (''http://www.cigna.com/acme/domains/commoncontact/2011/11'' as "cm", default ''http://www.cigna.com/acme/domains/customer/customerprofile/2011/11''),
''/customerProfile''
columns
DOB date PATH ''personInformation/cm:birthDate'',
FIRSTNAME varchar2(40)    PATH ''name/cm:givenName'',
LASTNAME varchar2(40)    PATH ''name/cm:surName'',
SSN varchar2(30)    PATH ''identifiers/ssn'',
MEMBERINFOS XMLType path ''memberInfos/memberInfo'' VIRTUAL
XMLTable acme_cust_lev2_idx_tab XMLNAMESPACES(default ''http://www.cigna.com/acme/domains/customer/customerprofile/2011/11''),
''/memberInfo'' passing MEMBERINFOS
columns
ami varchar2(40) PATH ''ami'',
subscId varchar2(50) PATH ''clientRelationship/subscriberInformation/subscriberId'',
employeeId varchar2(50) PATH ''systemKeys/employeeId'',
clientId varchar2(50) PATH ''clientRelationship/clientId''
CREATE UNIQUE INDEX "N98991"."SYS_C00384339" ON "N98991"."ACME_CUST"
    "SYS_NC_OID$"
PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS STORAGE
    INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0
    FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT
    CELL_FLASH_CACHE DEFAULT
TABLESPACE "ACME_DEV" ;
CREATE UNIQUE INDEX "N98991"."SYS_IL0000649948C00003$$" ON "N98991"."ACME_CUST"
    PCTFREE 10 INITRANS 2 MAXTRANS 255 STORAGE(INITIAL 65536 NEXT 1048576
    MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST
    GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
    TABLESPACE "ACME_DEV" PARALLEL (DEGREE 0 INSTANCES 0) ;Why isn't the unique index ACME_CUST_ID_PK on the virtual column ACME_CUST_ID being used in the explain plan?
Any input would be much appreciated, as really stumped here.
Regards,
Rick

Hi Richard,
The 10053 event appears overkill for this situation. What's the big deal?
Set the event, run the query, unset the event, check the trace file, that's all.
It's not overkill if it helps you understanding what happens and why an index is of no use in this situation.
Tried the /*+ INDEX_FFS(ACME_CUST_ID_PK) */ hint in the 'nested' query.Not sure what nested query you're referring to, so if I misunderstood what you mean, just ignore the following comment.
From what you posted earlier, it looks like you're talking about this part :
listagg(ac.acme_cust_id,'|') WITHIN GROUP (
ORDER BY ac.acme_cust_id,ac.acme_cust_id) CUST_IDThat's not a nested query, it's a projection. All the main work (retrieving rows) has already been done when it comes to this part.
May just have to accept the query performance as it is...Maybe you can try something else.
See the document : Oracle XML DB : Best Practices, page 15 ex. 8 :
When there are multiple scalar values that need to be grouped or ordered, it is better to write it
with XMLTable construct that projects out all columns to be ordered or grouped as shown
below.Here's an example close to your actual requirement :
Connected to:
Oracle Database 11g Express Edition Release 11.2.0.2.0 - Production
SQL> create table xtab_cols of xmltype
2 xmltype store as securefile binary xml;
Table created.
SQL> insert /*+ append */ into xtab_cols
2 select xmlelement("ROW",
3           xmlforest(
4            TABLE_NAME, COLUMN_NAME, DATA_TYPE, DATA_TYPE_MOD, DATA_TYPE_OWNER,
5            DATA_LENGTH, DATA_PRECISION, DATA_SCALE, NULLABLE, COLUMN_ID,
6            DEFAULT_LENGTH, NUM_DISTINCT, LOW_VALUE, HIGH_VALUE,
7            DENSITY, NUM_NULLS, NUM_BUCKETS, LAST_ANALYZED, SAMPLE_SIZE,
8            CHARACTER_SET_NAME, CHAR_COL_DECL_LENGTH,
9            GLOBAL_STATS, USER_STATS, AVG_COL_LEN, CHAR_LENGTH, CHAR_USED,
10            V80_FMT_IMAGE, DATA_UPGRADED, HISTOGRAM
11           )
12         )
13 from dba_tab_cols
14 where owner = 'SYS'
15 ;
57079 rows created.
SQL> commit;
Commit complete.
SQL> set long 1000
SQL> set pages 100
SQL> select xmlserialize(document object_value) from xtab_cols where rownum = 1;
XMLSERIALIZE(DOCUMENTOBJECT_VALUE)
<ROW>
<TABLE_NAME>ACCESS$</TABLE_NAME>
<COLUMN_NAME>D_OBJ#</COLUMN_NAME>
<DATA_TYPE>NUMBER</DATA_TYPE>
<DATA_LENGTH>22</DATA_LENGTH>
<NULLABLE>N</NULLABLE>
<COLUMN_ID>1</COLUMN_ID>
<NUM_DISTINCT>7454</NUM_DISTINCT>
<LOW_VALUE>C2083A</LOW_VALUE>
<HIGH_VALUE>C3031D18</HIGH_VALUE>
<DENSITY>,000134156157767642</DENSITY>
<NUM_NULLS>0</NUM_NULLS>
<NUM_BUCKETS>1</NUM_BUCKETS>
<LAST_ANALYZED>2012-01-28</LAST_ANALYZED>
<SAMPLE_SIZE>34794</SAMPLE_SIZE>
<GLOBAL_STATS>YES</GLOBAL_STATS>
<USER_STATS>NO</USER_STATS>
<AVG_COL_LEN>5</AVG_COL_LEN>
<CHAR_LENGTH>0</CHAR_LENGTH>
<V80_FMT_IMAGE>NO</V80_FMT_IMAGE>
<DATA_UPGRADED>YES</DATA_UPGRADED>
<HISTOGRAM>NONE</HISTOGRAM>
</ROW>
SQL> exec dbms_stats.gather_table_stats(user, 'XTAB_COLS');
PL/SQL procedure successfully completed.
SQL> set autotrace traceonly
SQL> set timing on
SQL> set lines 120
SQL> select x.table_name
2       , listagg(x.column_name, ',') within group (order by column_id)
3 from xtab_cols t
4     , xmltable('/ROW' passing t.object_value
5        columns table_name varchar2(30) path 'TABLE_NAME'
6              , column_name varchar2(30) path 'COLUMN_NAME'
7              , column_id   number       path 'COLUMN_ID'
8       ) x
9 group by x.table_name
10 ;
4714 rows selected.
Elapsed: 00:00:08.25
Execution Plan
Plan hash value: 602782846
| Id | Operation           | Name      | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT    |           |   466M|   101G| 1580K (3)| 05:16:04 |
|   1 | SORT GROUP BY      |           |   466M|   101G| 1580K (3)| 05:16:04 |
|   2 |   NESTED LOOPS      |           |   466M|   101G| 1552K (1)| 05:10:32 |
|   3 |    TABLE ACCESS FULL| XTAB_COLS | 57079 |    12M|   408   (1)| 00:00:05 |
|   4 |    XPATH EVALUATION |           |       |       |            |          |
Statistics
          9 recursive calls
          1 db block gets
       1713 consistent gets
          0 physical reads
         96 redo size
     773516 bytes sent via SQL*Net to client
       3873 bytes received via SQL*Net from client
        316 SQL*Net roundtrips to/from client
          1 sorts (memory)
          0 sorts (disk)
       4714 rows processedAnd of course, even better after adding a structured XML index (4714 rows fetched in 1s) :
SQL> CREATE INDEX xtab_cols_sxi ON xtab_cols (OBJECT_VALUE) INDEXTYPE IS XDB.XMLIndex
2 PARAMETERS (
3 q'#XMLTable my_xtab
4 '/ROW'
5 columns table_name varchar2(30) path 'TABLE_NAME'
6        , column_name varchar2(30) path 'COLUMN_NAME'
7        , column_id number path 'COLUMN_ID' #');
Index created.
Elapsed: 00:00:13.42
SQL> select x.table_name
2       , listagg(x.column_name, ',') within group (order by column_id)
3 from xtab_cols t
4     , xmltable('/ROW' passing t.object_value
5        columns table_name varchar2(30) path 'TABLE_NAME'
6              , column_name varchar2(30) path 'COLUMN_NAME'
7              , column_id   number       path 'COLUMN_ID'
8       ) x
9 group by x.table_name
10 ;
4714 rows selected.
Elapsed: 00:00:01.00
Execution Plan
Plan hash value: 3303494605
| Id | Operation          | Name    | Rows | Bytes | Cost (%CPU)| Time     |
|   0 | SELECT STATEMENT   |         | 57520 | 3201K|   174   (3)| 00:00:03 |
|   1 | SORT GROUP BY     |         | 57520 | 3201K|   174   (3)| 00:00:03 |
|   2 |   TABLE ACCESS FULL| MY_XTAB | 57520 | 3201K|   171   (1)| 00:00:03 |
Note
   - dynamic sampling used for this statement (level=2)
Statistics
        297 recursive calls
          1 db block gets
        989 consistent gets
          0 physical reads
        176 redo size
     773516 bytes sent via SQL*Net to client
       3873 bytes received via SQL*Net from client
        316 SQL*Net roundtrips to/from client
         21 sorts (memory)
          0 sorts (disk)
       4714 rows processed

How to create index to speed up query on XMLTYPE table

I have a table of XMLTYPE called gary_pass_xml. What kind of index can I create on the table to speed up this query.
SELECT (Extract(Value(FareGroupNodes),'/FareGroup')) FareGroup
FROM GARY_PASS_XML tx,
TABLE(XMLSequence(Extract(Value(tx),'/FareSearchRS/FareGroup'))) FareGroupNodes
WHERE existsnode(value(tx),'/FareSearchRS/FareGroup') = 1

I have a table of XMLTYPE called gary_pass_xml. What kind of index can I create on the table to speed up this query.
SELECT (Extract(Value(FareGroupNodes),'/FareGroup')) FareGroup
FROM GARY_PASS_XML tx,
TABLE(XMLSequence(Extract(Value(tx),'/FareSearchRS/FareGroup'))) FareGroupNodes
WHERE existsnode(value(tx),'/FareSearchRS/FareGroup') = 1

Is this query on XMLTYPE the most performant ?

Hello,
We are in 11gR2
and we built a process for loading XML files that I think are very complex (I hope so)
We about about 600 similar XML files to load every night.
The XML file is saved under a XMLTYPE table and we attached a XSD Schema on it.
One of the queries we built for selecting XMLTYPE data uses several outer joins on the XML. And I think I should find a way for increasing performance on the query
Here is the details (sometimes huge in volume) :
1) The query I would like to improve :
Depending on data in the XML file, the SELECT duration can go from 3 minutes to more than 4 hours !
select DISTINCT UPPER(t2.ressource_code)
, CASE WHEN ( t5.isWorkDay = 'false' AND t5.day IS NOT NULL
                AND ( to_date( replace(t5.day, 'T', ' '), 'YYYY-MM-DD HH24:MI:SS')
                      BETWEEN to_date( replace(t4.taux_start_date, 'T', ' '), 'YYYY-MM-DD HH24:MI:SS')
                          AND to_date( replace(t4.taux_end_date, 'T', ' '), 'YYYY-MM-DD HH24:MI:SS'))
         THEN to_date( replace(t5.day, 'T', ' '), 'YYYY-MM-DD HH24:MI:SS')
         ELSE to_date( replace(t4.taux_start_date, 'T', ' '), 'YYYY-MM-DD HH24:MI:SS') END day_start
, CASE WHEN ( t5.isWorkDay = 'false' AND t5.day IS NOT NULL
                AND ( to_date( replace(t5.day, 'T', ' '), 'YYYY-MM-DD HH24:MI:SS')
                      BETWEEN to_date( replace(t4.taux_start_date, 'T', ' '), 'YYYY-MM-DD HH24:MI:SS')
                          AND to_date( replace(t4.taux_end_date, 'T', ' '), 'YYYY-MM-DD HH24:MI:SS'))
         THEN to_date( replace(t5.day, 'T', ' '), 'YYYY-MM-DD HH24:MI:SS')+1
         ELSE to_date( replace(t4.taux_end_date, 'T', ' '), 'YYYY-MM-DD HH24:MI:SS') END day_finish
, DECODE( t5.isWorkDay, NULL, CASE WHEN (to_number( t4.rate)>0) THEN 'true' ELSE 'false' END, t5.isWorkDay) isWorkDay
, DECODE( t5.isWorkDay, NULL, TO_CHAR( to_date( replace(t4.taux_start_date, 'T', ' '), 'YYYY-MM-DD HH24:MI:SS'), 'HH24:MI:SS'), t6.shift_start) shift_start
, DECODE( t5.isWorkDay, NULL, TO_CHAR( to_date( replace(t4.taux_end_date, 'T', ' '), 'YYYY-MM-DD HH24:MI:SS'), 'HH24:MI:SS'), t6.shift_finish) shift_finish
, DECODE( UPPER(t5.dayOfWeek), 'MON', 'LUNDI', 'TUE', 'MARDI', 'WED', 'MERCREDI', 'THU', 'JEUDI', 'FRI', 'VENDREDI', 'SAT', 'SAMEDI', 'SUN', 'DIMANCHE', NULL, NULL) dayOfWeek
, SYSDATE
, t1.tache_uid, t1.tache_code, t1.tache_desc
, t3.curve_name
, to_number( t4.rate) activity
FROM WORKBENCH_PROJECT_TABLE t
, xmltable( xmlNamespaces( default 'http://www.oracle.com/xsd/projet.xsd')
, '/WORKBENCH_PROJECT/Projects/Project/Tasks/Task' passing OBJECT_VALUE
columns tache_UID          varchar2(70) path '@UID'
, tache_code         varchar2(150) path '@taskID'
, tache_desc         varchar2(150) path '@name'
, activites_xml      xmltype      path 'Assignments'
) t1
, xmltable( xmlNamespaces( default 'http://www.oracle.com/xsd/projet.xsd')
, '/Assignments/*' passing t1.activites_xml
columns ressource_code     varchar2(50) path '@resourceID'
, curves_xml         xmltype      path 'Curve'
) t2
, xmltable( xmlNamespaces( default 'http://www.oracle.com/xsd/projet.xsd')
, '/Curve' passing t2.curves_xml
columns curve_name         varchar2(50) path '@name'
, segments_xml       xmltype      path 'Segments'
) t3
, xmltable( xmlNamespaces( default 'http://www.oracle.com/xsd/projet.xsd')
, '/Segments/*' passing t3.segments_xml
    columns rate               varchar2(50) path '@rate'
, taux_start_date         varchar2(20) path '@start'
, taux_end_date           varchar2(20) path '@finish'
, calendar_days_xml       xmltype      path 'Calendar/Days'
) t4
, xmltable( xmlNamespaces( default 'http://www.oracle.com/xsd/projet.xsd')
, '/Days/*' passing t4.calendar_days_xml
    columns dayOfWeek       varchar2(50) path '@dayOfWeek'
, isWorkDay               varchar2(20) path '@isWorkDay'
, DAY                     varchar2(20) path '@start'
, shift_xml               xmltype      path 'Shifts'
) (+) t5
, xmltable( xmlNamespaces( default 'http://www.oracle.com/xsd/projet.xsd')
, 'Shifts/Shift'        passing t5.shift_xml
     columns shift_start varchar2(20) path '@start'
           , shift_finish varchar2(20) path '@finish'
) (+) t6; Here is the XSD schema :
<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
         xmlns:xdb="http://xmlns.oracle.com/xdb"
         xmlns="http://www.oracle.com/xsd/projet.xsd"
         targetNamespace="http://www.oracle.com/xsd/projet.xsd"
         elementFormDefault="unqualified"
         xdb:storeVarrayAsTable="true">
<xsd:element name="WORKBENCH_PROJECT" xdb:defaultTable="WORKBENCH_PROJECT_TABLE">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="BaseCalendars"/>
        <xsd:element ref="PoolResources"/>
        <xsd:element ref="Projects"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="BaseCalendars" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Calendar" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="PoolResources" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="PoolResource" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="PoolResource" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Calendar"/>
        <xsd:element ref="Curve"/>
        <xsd:element ref="Notes" minOccurs="0"/>
      </xsd:sequence>
      <xsd:attribute name="category" type="xsd:string"/>
      <xsd:attribute name="emailAddress" type="xsd:string"/>
      <xsd:attribute name="employmentType" type="xsd:integer"/>
      <xsd:attribute name="description" type="xsd:string"/>
      <xsd:attribute name="firstName" type="xsd:string"/>
      <xsd:attribute name="fullName" type="xsd:string"/>
      <xsd:attribute name="hireDate" type="xsd:NMTOKEN"/>
      <xsd:attribute name="inputTypeCode" type="xsd:integer"/>
      <xsd:attribute name="isActive" type="xsd:boolean"/>
      <xsd:attribute name="isExternal" type="xsd:boolean"/>
      <xsd:attribute name="isRole" type="xsd:boolean"/>
      <xsd:attribute name="lastName" type="xsd:string"/>
      <xsd:attribute name="managerUserName" type="xsd:string"/>
      <xsd:attribute name="modBy" type="xsd:string"/>
      <xsd:attribute name="openForTimeEntry" type="xsd:boolean"/>
      <xsd:attribute name="resourceId" type="xsd:string"/>
      <xsd:attribute name="resourceType" type="xsd:integer"/>
      <xsd:attribute name="roleID" type="xsd:string"/>
      <xsd:attribute name="terminationDate" type="xsd:NMTOKEN"/>
      <xsd:attribute name="trackMode" type="xsd:integer"/>
      <xsd:attribute name="userFlag1" type="xsd:boolean"/>
      <xsd:attribute name="userFlag2" type="xsd:boolean"/>
      <xsd:attribute name="userNumber1" type="xsd:decimal"/>
      <xsd:attribute name="userNumber2" type="xsd:decimal"/>
      <xsd:attribute name="userText1" type="xsd:string"/>
      <xsd:attribute name="userText2" type="xsd:string"/>
      <xsd:attribute name="userText3" type="xsd:string"/>
      <xsd:attribute name="userText4" type="xsd:string"/>
      <xsd:attribute name="userText5" type="xsd:string"/>
      <xsd:attribute name="userText6" type="xsd:string"/>
      <xsd:attribute name="userText7" type="xsd:string"/>
      <xsd:attribute name="userText8" type="xsd:string"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Projects" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Project" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Project" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Baselines" minOccurs="0"/>
        <xsd:element ref="Notes" minOccurs="0"/>
        <xsd:element ref="Resources" minOccurs="0"/>
        <xsd:element ref="Tasks" minOccurs="0"/>
        <xsd:element ref="BaselineDetails" minOccurs="0"/>
        <xsd:element ref="Dependencies" minOccurs="0"/>
      </xsd:sequence>
      <xsd:attribute name="UID"/>
      <xsd:attribute name="active" type="xsd:boolean"/>
      <xsd:attribute name="asOf" type="xsd:NMTOKEN"/>
      <xsd:attribute name="approved" type="xsd:boolean"/>
      <xsd:attribute name="baseFinish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="baseStart" type="xsd:NMTOKEN"/>
      <xsd:attribute name="baseTime" type="xsd:NMTOKEN"/>
      <xsd:attribute name="budget" type="xsd:double"/>
      <xsd:attribute name="closed" type="xsd:boolean"/>
      <xsd:attribute name="cpmType" type="xsd:integer"/>
      <xsd:attribute name="department" type="xsd:string"/>
      <xsd:attribute name="description" type="xsd:string"/>
      <xsd:attribute name="finish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="finishImposed" type="xsd:boolean"/>
      <xsd:attribute name="format" type="xsd:integer"/>
      <xsd:attribute name="lastUpdatedBy" type="xsd:string"/>
      <xsd:attribute name="lastUpdatedDate" type="xsd:NMTOKEN"/>
      <xsd:attribute name="name" type="xsd:string"/>
      <xsd:attribute name="openForTimeEntry" type="xsd:boolean"/>
      <xsd:attribute name="priority" type="xsd:integer"/>
      <xsd:attribute name="projectType" type="xsd:integer"/>
      <xsd:attribute name="program" type="xsd:boolean"/>
      <xsd:attribute name="projectID" type="xsd:string"/>
      <xsd:attribute name="start" type="xsd:NMTOKEN"/>
      <xsd:attribute name="startImposed" type="xsd:boolean"/>
      <xsd:attribute name="status" type="xsd:integer"/>
      <xsd:attribute name="trackMode" type="xsd:integer"/>
      <xsd:attribute name="userText1" type="xsd:string"/>
      <xsd:attribute name="userText2" type="xsd:string"/>
      <xsd:attribute name="userText3" type="xsd:string"/>
      <xsd:attribute name="userText4" type="xsd:string"/>
      <xsd:attribute name="userText5" type="xsd:string"/>
      <xsd:attribute name="userText6" type="xsd:string"/>
      <xsd:attribute name="userText7" type="xsd:string"/>
      <xsd:attribute name="userText8" type="xsd:string"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Baselines" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Baseline" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Baseline" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:attribute name="code" type="xsd:string"/>
      <xsd:attribute name="current" type="xsd:boolean"/>
      <xsd:attribute name="description"/>
      <xsd:attribute name="name" type="xsd:string"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Resources" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Resource" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Resource" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Curve" minOccurs="0" maxOccurs="unbounded"/>
        <xsd:element ref="BaselineDetails" minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
      <xsd:attribute name="availFrom" type="xsd:NMTOKEN"/>
      <xsd:attribute name="availTo" type="xsd:NMTOKEN"/>
      <xsd:attribute name="bookingStatus" type="xsd:integer"/>
      <xsd:attribute name="lastUpdatedBy" type="xsd:string"/>
      <xsd:attribute name="lastUpdatedDate" type="xsd:NMTOKEN"/>
      <xsd:attribute name="openForTimeEntry" type="xsd:boolean"/>
      <xsd:attribute name="requestStatus" type="xsd:integer"/>
      <xsd:attribute name="resourceID" type="xsd:string"/>
      <xsd:attribute name="roleID" type="xsd:string"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Tasks" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Task" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Task" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Assignments" minOccurs="0"/>
        <xsd:element ref="BaselineDetails" minOccurs="0"/>
        <xsd:element ref="Constraints" minOccurs="0"/>
        <xsd:element ref="Notes" minOccurs="0"/>
      </xsd:sequence>
      <xsd:attribute name="UID"/>
      <xsd:attribute name="taskID" type="xsd:string"/>
      <xsd:attribute name="baseFinish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="baseStart" type="xsd:NMTOKEN"/>
      <xsd:attribute name="baseTime" type="xsd:NMTOKEN"/>
      <xsd:attribute name="baselineDuration" type="xsd:decimal"/>
      <xsd:attribute name="category" type="xsd:string"/>
      <xsd:attribute name="critical" type="xsd:boolean"/>
      <xsd:attribute name="earlyFinish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="earlyStart" type="xsd:NMTOKEN"/>
      <xsd:attribute name="finish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="fixed" type="xsd:boolean"/>
      <xsd:attribute name="guidelines" type="xsd:string"/>
      <xsd:attribute name="key" type="xsd:boolean"/>
      <xsd:attribute name="lastUpdatedBy" type="xsd:string"/>
      <xsd:attribute name="lastUpdatedDate" type="xsd:NMTOKEN"/>
      <xsd:attribute name="lateFinish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="lateStart" type="xsd:NMTOKEN"/>
      <xsd:attribute name="locked" type="xsd:boolean"/>
      <xsd:attribute name="methodID" type="xsd:string"/>
      <xsd:attribute name="milestone" type="xsd:boolean"/>
      <xsd:attribute name="name" type="xsd:string"/>
      <xsd:attribute name="outlineLevel" type="xsd:integer"/>
      <xsd:attribute name="percComp" type="xsd:decimal"/>
      <xsd:attribute name="priority" type="xsd:string"/>
      <xsd:attribute name="proxy" type="xsd:boolean"/>
      <xsd:attribute name="shortName" type="xsd:string"/>
      <xsd:attribute name="start" type="xsd:NMTOKEN"/>
      <xsd:attribute name="status" type="xsd:integer"/>
      <xsd:attribute name="summary" type="xsd:boolean"/>
      <xsd:attribute name="totalSlack" type="xsd:double"/>
      <xsd:attribute name="unplanned" type="xsd:boolean"/>
      <xsd:attribute name="userText1" type="xsd:string"/>
      <xsd:attribute name="userText2" type="xsd:string"/>
      <xsd:attribute name="userText3" type="xsd:string"/>
      <xsd:attribute name="userText4" type="xsd:string"/>
      <xsd:attribute name="userText5" type="xsd:string"/>
      <xsd:attribute name="userText6" type="xsd:string"/>
      <xsd:attribute name="userText7" type="xsd:string"/>
      <xsd:attribute name="userText8" type="xsd:string"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Assignments" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Assignment" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Assignment" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Curve" minOccurs="0" maxOccurs="unbounded"/>
        <xsd:element ref="BaselineDetails" minOccurs="0"/>
      </xsd:sequence>
      <xsd:attribute name="actualThrough" type="xsd:NMTOKEN"/>
      <xsd:attribute name="actualWork" type="xsd:double"/>
      <xsd:attribute name="baselineWork" type="xsd:double"/>
      <xsd:attribute name="estMax" type="xsd:double"/>
      <xsd:attribute name="estPattern" type="xsd:integer"/>
      <xsd:attribute name="finish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="lastUpdatedBy" type="xsd:string"/>
      <xsd:attribute name="lastUpdatedDate" type="xsd:NMTOKEN"/>
      <xsd:attribute name="pendActSum" type="xsd:double"/>
      <xsd:attribute name="pendEstSum" type="xsd:double"/>
      <xsd:attribute name="remainingWork" type="xsd:double"/>
      <xsd:attribute name="resourceID" type="xsd:string"/>
      <xsd:attribute name="roleID" type="xsd:string"/>
      <xsd:attribute name="start" type="xsd:NMTOKEN"/>
      <xsd:attribute name="status" type="xsd:integer"/>
      <xsd:attribute name="unplanned" type="xsd:boolean"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Constraints" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Constraint" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Constraint" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:attribute name="lastUpdatedBy" type="xsd:string"/>
      <xsd:attribute name="lastUpdatedDate" type="xsd:NMTOKEN"/>
      <xsd:attribute name="time" type="xsd:NMTOKEN"/>
      <xsd:attribute name="type" type="xsd:integer"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Notes" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Note" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Note" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:attribute name="category" type="xsd:string"/>
      <xsd:attribute name="content" type="xsd:string"/>
      <xsd:attribute name="createdBy" type="xsd:string"/>
      <xsd:attribute name="createdDate" type="xsd:NMTOKEN"/>
      <xsd:attribute name="lastUpdatedBy" type="xsd:string"/>
      <xsd:attribute name="lastUpdatedDate" type="xsd:NMTOKEN"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Dependencies" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Dependency" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Dependency" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:attribute name="lag" type="xsd:decimal"/>
      <xsd:attribute name="lagType" type="xsd:integer"/>
      <xsd:attribute name="lastUpdatedBy" type="xsd:string"/>
      <xsd:attribute name="lastUpdatedDate" type="xsd:NMTOKEN"/>
      <xsd:attribute name="predecessorID" type="xsd:string"/>
      <xsd:attribute name="predecessorUID"/>
      <xsd:attribute name="startFinishType" type="xsd:integer"/>
      <xsd:attribute name="successorID" type="xsd:string"/>
      <xsd:attribute name="successorUID"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Calendar" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Days" minOccurs="0"/>
      </xsd:sequence>
      <xsd:attribute name="baseCalendar"/>
      <xsd:attribute name="lastUpdatedBy" type="xsd:string"/>
      <xsd:attribute name="lastUpdatedDate" type="xsd:NMTOKEN"/>
      <xsd:attribute name="name"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Days" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Day" minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Day" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Shifts" minOccurs="0"/>
      </xsd:sequence>
      <xsd:attribute name="dayOfWeek" type="xsd:string"/>
      <xsd:attribute name="finish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="isWorkDay" type="xsd:boolean"/>
      <xsd:attribute name="start" type="xsd:NMTOKEN"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Shifts" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Shift" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Shift" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:attribute name="finish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="start" type="xsd:NMTOKEN"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Curve" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Segments" minOccurs="0"/>
      </xsd:sequence>
      <xsd:attribute name="default" type="xsd:double"/>
      <xsd:attribute name="name" type="xsd:string"/>
      <xsd:attribute name="type" type="xsd:integer"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Segments" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Segment" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Segment" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Calendar" minOccurs="0"/>
      </xsd:sequence>
      <xsd:attribute name="finish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="rate" type="xsd:double"/>
      <xsd:attribute name="start" type="xsd:NMTOKEN"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="BaselineDetails" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="BaselineDetail" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="BaselineDetail" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Curve" minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
      <xsd:attribute name="baselineCode" type="xsd:string"/>
      <xsd:attribute name="costSum" type="xsd:double"/>
      <xsd:attribute name="duration" type="xsd:double"/>
      <xsd:attribute name="finish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="start" type="xsd:NMTOKEN"/>
      <xsd:attribute name="usageSum" type="xsd:double"/>
    </xsd:complexType>
</xsd:element>
</xsd:schema>3) and one of the smallest XML ... (I can send you a bigger one, where you could notice the query duration )
    "Your message exceeds the maximum length of 30000 characters."I can email you an XML file, I failed to upload the smallest XML file !!!!
Well, I hope that's clear enough ad that you could provide me help and advices
Thanks a lot in advance,
Olivier

connect / as sysdba
set define on
set timing on
-- Define variables for USERNAME, TABLESPACES and XMLDIR that represents the base directory where a 'xsd' directory
-- exists that contains the called XML schema used in this script to be registered that creates the XMLTYPE OR table
def USERNAME = cap
def PASSWORD = &USERNAME
-- def XMLDIR = 'C:\Temp'
def USER_TABSPACE = USERS
def TEMP_TABSPACE = TEMP
-- End declaritive section
drop user &USERNAME cascade
grant create any directory, drop any directory, connect, resource, create synonym, alter session, create view to &USERNAME identified by &PASSWORD
alter user &USERNAME default tablespace &USER_TABSPACE temporary tablespace &TEMP_TABSPACE
connect &USERNAME/&PASSWORD
-- create or replace directory XMLDIR as '&XMLDIR/xsd'
select * from v$version
DECLARE
V_XMLSCHEMA CLOB := '<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
         xmlns:xdb="http://xmlns.oracle.com/xdb"
         xmlns="http://www.oracle.com/xsd/projet.xsd"
         targetNamespace="http://www.oracle.com/xsd/projet.xsd"
         elementFormDefault="unqualified"
         xdb:storeVarrayAsTable="true">
<xsd:element name="WORKBENCH_PROJECT" xdb:defaultTable="WORKBENCH_PROJECT_TABLE">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="BaseCalendars"/>
        <xsd:element ref="PoolResources"/>
        <xsd:element ref="Projects"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="BaseCalendars" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Calendar" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="PoolResources" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="PoolResource" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="PoolResource" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Calendar"/>
        <xsd:element ref="Curve"/>
        <xsd:element ref="Notes" minOccurs="0"/>
      </xsd:sequence>
      <xsd:attribute name="category" type="xsd:string"/>
      <xsd:attribute name="emailAddress" type="xsd:string"/>
      <xsd:attribute name="employmentType" type="xsd:integer"/>
      <xsd:attribute name="description" type="xsd:string"/>
      <xsd:attribute name="firstName" type="xsd:string"/>
      <xsd:attribute name="fullName" type="xsd:string"/>
      <xsd:attribute name="hireDate" type="xsd:NMTOKEN"/>
      <xsd:attribute name="inputTypeCode" type="xsd:integer"/>
      <xsd:attribute name="isActive" type="xsd:boolean"/>
      <xsd:attribute name="isExternal" type="xsd:boolean"/>
      <xsd:attribute name="isRole" type="xsd:boolean"/>
      <xsd:attribute name="lastName" type="xsd:string"/>
      <xsd:attribute name="managerUserName" type="xsd:string"/>
      <xsd:attribute name="modBy" type="xsd:string"/>
      <xsd:attribute name="openForTimeEntry" type="xsd:boolean"/>
      <xsd:attribute name="resourceId" type="xsd:string"/>
      <xsd:attribute name="resourceType" type="xsd:integer"/>
      <xsd:attribute name="roleID" type="xsd:string"/>
      <xsd:attribute name="terminationDate" type="xsd:NMTOKEN"/>
      <xsd:attribute name="trackMode" type="xsd:integer"/>
      <xsd:attribute name="userFlag1" type="xsd:boolean"/>
      <xsd:attribute name="userFlag2" type="xsd:boolean"/>
      <xsd:attribute name="userNumber1" type="xsd:decimal"/>
      <xsd:attribute name="userNumber2" type="xsd:decimal"/>
      <xsd:attribute name="userText1" type="xsd:string"/>
      <xsd:attribute name="userText2" type="xsd:string"/>
      <xsd:attribute name="userText3" type="xsd:string"/>
      <xsd:attribute name="userText4" type="xsd:string"/>
      <xsd:attribute name="userText5" type="xsd:string"/>
      <xsd:attribute name="userText6" type="xsd:string"/>
      <xsd:attribute name="userText7" type="xsd:string"/>
      <xsd:attribute name="userText8" type="xsd:string"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Projects" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Project" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Project" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Baselines" minOccurs="0"/>
        <xsd:element ref="Notes" minOccurs="0"/>
        <xsd:element ref="Resources" minOccurs="0"/>
        <xsd:element ref="Tasks" minOccurs="0"/>
        <xsd:element ref="BaselineDetails" minOccurs="0"/>
        <xsd:element ref="Dependencies" minOccurs="0"/>
      </xsd:sequence>
      <xsd:attribute name="UID"/>
      <xsd:attribute name="active" type="xsd:boolean"/>
      <xsd:attribute name="asOf" type="xsd:NMTOKEN"/>
      <xsd:attribute name="approved" type="xsd:boolean"/>
      <xsd:attribute name="baseFinish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="baseStart" type="xsd:NMTOKEN"/>
      <xsd:attribute name="baseTime" type="xsd:NMTOKEN"/>
      <xsd:attribute name="budget" type="xsd:double"/>
      <xsd:attribute name="closed" type="xsd:boolean"/>
      <xsd:attribute name="cpmType" type="xsd:integer"/>
      <xsd:attribute name="department" type="xsd:string"/>
      <xsd:attribute name="description" type="xsd:string"/>
      <xsd:attribute name="finish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="finishImposed" type="xsd:boolean"/>
      <xsd:attribute name="format" type="xsd:integer"/>
      <xsd:attribute name="lastUpdatedBy" type="xsd:string"/>
      <xsd:attribute name="lastUpdatedDate" type="xsd:NMTOKEN"/>
      <xsd:attribute name="name" type="xsd:string"/>
      <xsd:attribute name="openForTimeEntry" type="xsd:boolean"/>
      <xsd:attribute name="priority" type="xsd:integer"/>
      <xsd:attribute name="projectType" type="xsd:integer"/>
      <xsd:attribute name="program" type="xsd:boolean"/>
      <xsd:attribute name="projectID" type="xsd:string"/>
      <xsd:attribute name="start" type="xsd:NMTOKEN"/>
      <xsd:attribute name="startImposed" type="xsd:boolean"/>
      <xsd:attribute name="status" type="xsd:integer"/>
      <xsd:attribute name="trackMode" type="xsd:integer"/>
      <xsd:attribute name="userText1" type="xsd:string"/>
      <xsd:attribute name="userText2" type="xsd:string"/>
      <xsd:attribute name="userText3" type="xsd:string"/>
      <xsd:attribute name="userText4" type="xsd:string"/>
      <xsd:attribute name="userText5" type="xsd:string"/>
      <xsd:attribute name="userText6" type="xsd:string"/>
      <xsd:attribute name="userText7" type="xsd:string"/>
      <xsd:attribute name="userText8" type="xsd:string"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Baselines" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Baseline" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Baseline" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:attribute name="code" type="xsd:string"/>
      <xsd:attribute name="current" type="xsd:boolean"/>
      <xsd:attribute name="description"/>
      <xsd:attribute name="name" type="xsd:string"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Resources" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Resource" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Resource" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Curve" minOccurs="0" maxOccurs="unbounded"/>
        <xsd:element ref="BaselineDetails" minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
      <xsd:attribute name="availFrom" type="xsd:NMTOKEN"/>
      <xsd:attribute name="availTo" type="xsd:NMTOKEN"/>
      <xsd:attribute name="bookingStatus" type="xsd:integer"/>
      <xsd:attribute name="lastUpdatedBy" type="xsd:string"/>
      <xsd:attribute name="lastUpdatedDate" type="xsd:NMTOKEN"/>
      <xsd:attribute name="openForTimeEntry" type="xsd:boolean"/>
      <xsd:attribute name="requestStatus" type="xsd:integer"/>
      <xsd:attribute name="resourceID" type="xsd:string"/>
      <xsd:attribute name="roleID" type="xsd:string"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Tasks" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Task" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Task" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Assignments" minOccurs="0"/>
        <xsd:element ref="BaselineDetails" minOccurs="0"/>
        <xsd:element ref="Constraints" minOccurs="0"/>
        <xsd:element ref="Notes" minOccurs="0"/>
      </xsd:sequence>
      <xsd:attribute name="UID"/>
      <xsd:attribute name="taskID" type="xsd:string"/>
      <xsd:attribute name="baseFinish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="baseStart" type="xsd:NMTOKEN"/>
      <xsd:attribute name="baseTime" type="xsd:NMTOKEN"/>
      <xsd:attribute name="baselineDuration" type="xsd:decimal"/>
      <xsd:attribute name="category" type="xsd:string"/>
      <xsd:attribute name="critical" type="xsd:boolean"/>
      <xsd:attribute name="earlyFinish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="earlyStart" type="xsd:NMTOKEN"/>
      <xsd:attribute name="finish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="fixed" type="xsd:boolean"/>
      <xsd:attribute name="guidelines" type="xsd:string"/>
      <xsd:attribute name="key" type="xsd:boolean"/>
      <xsd:attribute name="lastUpdatedBy" type="xsd:string"/>
      <xsd:attribute name="lastUpdatedDate" type="xsd:NMTOKEN"/>
      <xsd:attribute name="lateFinish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="lateStart" type="xsd:NMTOKEN"/>
      <xsd:attribute name="locked" type="xsd:boolean"/>
      <xsd:attribute name="methodID" type="xsd:string"/>
      <xsd:attribute name="milestone" type="xsd:boolean"/>
      <xsd:attribute name="name" type="xsd:string"/>
      <xsd:attribute name="outlineLevel" type="xsd:integer"/>
      <xsd:attribute name="percComp" type="xsd:decimal"/>
      <xsd:attribute name="priority" type="xsd:string"/>
      <xsd:attribute name="proxy" type="xsd:boolean"/>
      <xsd:attribute name="shortName" type="xsd:string"/>
      <xsd:attribute name="start" type="xsd:NMTOKEN"/>
      <xsd:attribute name="status" type="xsd:integer"/>
      <xsd:attribute name="summary" type="xsd:boolean"/>
      <xsd:attribute name="totalSlack" type="xsd:double"/>
      <xsd:attribute name="unplanned" type="xsd:boolean"/>
      <xsd:attribute name="userText1" type="xsd:string"/>
      <xsd:attribute name="userText2" type="xsd:string"/>
      <xsd:attribute name="userText3" type="xsd:string"/>
      <xsd:attribute name="userText4" type="xsd:string"/>
      <xsd:attribute name="userText5" type="xsd:string"/>
      <xsd:attribute name="userText6" type="xsd:string"/>
      <xsd:attribute name="userText7" type="xsd:string"/>
      <xsd:attribute name="userText8" type="xsd:string"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Assignments" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Assignment" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Assignment" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Curve" minOccurs="0" maxOccurs="unbounded"/>
        <xsd:element ref="BaselineDetails" minOccurs="0"/>
      </xsd:sequence>
      <xsd:attribute name="actualThrough" type="xsd:NMTOKEN"/>
      <xsd:attribute name="actualWork" type="xsd:double"/>
      <xsd:attribute name="baselineWork" type="xsd:double"/>
      <xsd:attribute name="estMax" type="xsd:double"/>
      <xsd:attribute name="estPattern" type="xsd:integer"/>
      <xsd:attribute name="finish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="lastUpdatedBy" type="xsd:string"/>
      <xsd:attribute name="lastUpdatedDate" type="xsd:NMTOKEN"/>
      <xsd:attribute name="pendActSum" type="xsd:double"/>
      <xsd:attribute name="pendEstSum" type="xsd:double"/>
      <xsd:attribute name="remainingWork" type="xsd:double"/>
      <xsd:attribute name="resourceID" type="xsd:string"/>
      <xsd:attribute name="roleID" type="xsd:string"/>
      <xsd:attribute name="start" type="xsd:NMTOKEN"/>
      <xsd:attribute name="status" type="xsd:integer"/>
      <xsd:attribute name="unplanned" type="xsd:boolean"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Constraints" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Constraint" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Constraint" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:attribute name="lastUpdatedBy" type="xsd:string"/>
      <xsd:attribute name="lastUpdatedDate" type="xsd:NMTOKEN"/>
      <xsd:attribute name="time" type="xsd:NMTOKEN"/>
      <xsd:attribute name="type" type="xsd:integer"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Notes" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Note" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Note" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:attribute name="category" type="xsd:string"/>
      <xsd:attribute name="content" type="xsd:string"/>
      <xsd:attribute name="createdBy" type="xsd:string"/>
      <xsd:attribute name="createdDate" type="xsd:NMTOKEN"/>
      <xsd:attribute name="lastUpdatedBy" type="xsd:string"/>
      <xsd:attribute name="lastUpdatedDate" type="xsd:NMTOKEN"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Dependencies" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Dependency" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Dependency" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:attribute name="lag" type="xsd:decimal"/>
      <xsd:attribute name="lagType" type="xsd:integer"/>
      <xsd:attribute name="lastUpdatedBy" type="xsd:string"/>
      <xsd:attribute name="lastUpdatedDate" type="xsd:NMTOKEN"/>
      <xsd:attribute name="predecessorID" type="xsd:string"/>
      <xsd:attribute name="predecessorUID"/>
      <xsd:attribute name="startFinishType" type="xsd:integer"/>
      <xsd:attribute name="successorID" type="xsd:string"/>
      <xsd:attribute name="successorUID"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Calendar" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Days" minOccurs="0"/>
      </xsd:sequence>
      <xsd:attribute name="baseCalendar"/>
      <xsd:attribute name="lastUpdatedBy" type="xsd:string"/>
      <xsd:attribute name="lastUpdatedDate" type="xsd:NMTOKEN"/>
      <xsd:attribute name="name"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Days" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Day" minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Day" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Shifts" minOccurs="0"/>
      </xsd:sequence>
      <xsd:attribute name="dayOfWeek" type="xsd:string"/>
      <xsd:attribute name="finish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="isWorkDay" type="xsd:boolean"/>
      <xsd:attribute name="start" type="xsd:NMTOKEN"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Shifts" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Shift" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Shift" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:attribute name="finish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="start" type="xsd:NMTOKEN"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Curve" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Segments" minOccurs="0"/>
      </xsd:sequence>
      <xsd:attribute name="default" type="xsd:double"/>
      <xsd:attribute name="name" type="xsd:string"/>
      <xsd:attribute name="type" type="xsd:integer"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Segments" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Segment" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="Segment" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Calendar" minOccurs="0"/>
      </xsd:sequence>
      <xsd:attribute name="finish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="rate" type="xsd:double"/>
      <xsd:attribute name="start" type="xsd:NMTOKEN"/>
    </xsd:complexType>
</xsd:element>
<xsd:element name="BaselineDetails" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="BaselineDetail" maxOccurs="unbounded"/>
      </xsd:sequence>
    </xsd:complexType>
</xsd:element>
<xsd:element name="BaselineDetail" xdb:defaultTable="">
    <xsd:complexType xdb:maintainDOM="false">
      <xsd:sequence>
        <xsd:element ref="Curve" minOccurs="0" maxOccurs="unbounded"/>
      </xsd:sequence>
      <xsd:attribute name="baselineCode" type="xsd:string"/>
      <xsd:attribute name="costSum" type="xsd:double"/>
      <xsd:attribute name="duration" type="xsd:double"/>
      <xsd:attribute name="finish" type="xsd:NMTOKEN"/>
      <xsd:attribute name="start" type="xsd:NMTOKEN"/>
      <xsd:attribute name="usageSum" type="xsd:double"/>
    </xsd:complexType>
</xsd:element>
</xsd:schema>' ;
BEGIN
dbms_xmlschema.registerSchema
    schemaurl       => 'http://www.oracle.com/xsd/projet.xsd',
    schemadoc       => V_XMLSCHEMA,
    local           => TRUE,
    genTypes        => TRUE,
    genBean         => FALSE,
    genTables       => TRUE,
    enablehierarchy => DBMS_XMLSCHEMA.ENABLE_HIERARCHY_NONE,
    owner           => user
END;
/

Help Query returns XMLType

I'm unable get XML output from the most basic of queries. I'm currently working through the Sql In Xml out document. Everytime i try to output xml i get a list (without errors) of
EMPLOYEE
<Xmltype>
<Xmltype>
<Xmltype>
<Xmltype>
<Xmltype>
for each record. Can anyone help.
Im running 10g release 2.

A couple more questions
First, is the XML stored in the table as XMLType column with a schema?
Second, in sqplus, on 10R2, I just ran the following query, try it and see if what you get.
select xmlforest(object_name as "name") from user_objects where object_type = 'TABLE' and rownum < 5;
XMLFOREST(OBJECT_NAMEAS"NAME")
<name>BIN$+1aDxmVbQIau51oiplxCAw==$0</name>
<name>BIN$+3Y2EpX4TvGY4j1SIGBAMQ==$0</name>
<name>BIN$+AugUYpGSS29uaP5DnYsZQ==$0</name>
<name>BIN$+ptFT7gqTX2GgNrndS5azw==$0</name>
Elapsed: 00:00:00.02
of course your names will vary.
Scott

Query against XMLType

I'm hung up on something that I suspect is very easy, but I have little experience working with XML in the database and think I've just stared at it too long.
I have an XML document (fragment below) stored as an XMLType in a 10g R2 database table and I want to return the following result set from a query against the document:
PAGE_ID PAGE_SUBMISSION_FIELD
21 F39EF21
21 F85FG3E
21 F73EF58
21 FA4939F
22 FDE77A4
22 FF3AD33
Here is a fragment of the XML document:
<root-interface>
<page-group>
<display-page validation-state="new">
<id>21</id>
<page-submission-fields>
<page-submission-field>F39EF21</page-submission-field>
<page-submission-field>F85FG3E</page-submission-field>
<page-submission-field>F73EF58</page-submission-field>
<page-submission-field>FA4939F</page-submission-field>
</page-submission-fields>
</display-page>
<display-page validation-state="new">
<id>22</id>
<page-submission-fields>
<page-submission-field>FDE77A4</page-submission-field>
<page-submission-field>FF3AD33</page-submission-field>
</page-submission-fields>
</display-page>
</page-group>
</root-interface>
Here is the table in which it is stored:
desc cms_session_interfaces
Name Null? Type
SESSION_ID NOT NULL NUMBER
INTERFACE_ID NOT NULL NUMBER
CREATED NOT NULL DATE
LAST_ACCESSED DATE
INTERFACE_XML SYS.XMLTYPE
Here is a close as I've come with a query:
select extract(value(display_pages), '//id/text()').getStringVal() page_id,
extract(value(display_pages), '//page-submission-fields/page-submission-field') page_submission_field
from cms_session_interfaces csi,
table(xmlsequence(extract(csi.interface_xml, '//root-interface/page-group/display-page'))) display_pages
where csi.session_id = 41
and csi.interface_id = 596
(the specified session_id and interface_id are just for testing purposes)
This returns two rows consisting of the PAGE_ID and an object of XMLType containing the page-submission fields. Almost there, but not quite; any suggestions would be appreciated.

As Marco said, xmltable is very handy:
SQL> with cms_session_interfaces as (
2 select XMLType('
3 <root-interface>
4    <page-group>
5      <display-page validation-state="new">
6        <id>21</id>
7        <page-submission-fields>
8          <page-submission-field>F39EF21</page-submission-field>
9          <page-submission-field>F85FG3E</page-submission-field>
10          <page-submission-field>F73EF58</page-submission-field>
11          <page-submission-field>FA4939F</page-submission-field>
12        </page-submission-fields>
13      </display-page>
14      <display-page validation-state="new">
15        <id>22</id>
16        <page-submission-fields>
17          <page-submission-field>FDE77A4</page-submission-field>
18          <page-submission-field>FF3AD33</page-submission-field>
19        </page-submission-fields>
20      </display-page>
21          </page-group>
22 </root-interface>') interface_xml
23 from dual)
24 select page.id,fields.field
25 from cms_session_interfaces csi,
26 xmltable('//root-interface/page-group/display-page'
27   passing interface_xml
28   columns
29    id varchar2(10) path 'id',
30    page_fields xmltype path 'page-submission-fields') page,
31 xmltable('/page-submission-fields/page-submission-field'
32   passing page_fields
33   columns
34    field varchar2(25) path '.') fields
35 /
ID         FIELD
21         F39EF21
21         F85FG3E
21         F73EF58
21         FA4939F
22         FDE77A4
22         FF3AD33
6 rows selected.Best regards
Maxim

Query in XMLType

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