How to perf tune Oracle SQL/XML query?

Hi all,
I am using Oracle 9i and like to run the following Oracle SQL/XML query. It takes about 3+ hour and still not finish. If I get rid all the XML stuffs it only take minutes to run. Does anybody know how to what's the reason of this slow and how to tune it?
SELECT XMLElement("CUSTOMER",
XMLForest(C_CUSTKEY "C_CUSTKEY", C_NAME "C_NAME", C_ADDRESS "C_ADDRESS", C_PHONE "C_PHONE", C_MKTSEGMENT "C_MKTSEGMENT", C_COMMENT "C_COMMENT"),
(SELECT XMLAgg(XMLElement("ORDERS",
XMLForest(O_ORDERKEY "O_ORDERKEY", O_CUSTKEY "O_CUSTKEY", O_ORDERSTATUS "O_ORDERSTATUS", O_ORDERPRIORITY "O_ORDERPRIORITY", O_CLERK "O_CLERK", O_COMMENT "O_COMMENT"),
(SELECT XMLAgg(XMLElement("LINEITEM",
XMLForest(L_ORDERKEY "L_ORDERKEY", L_RETURNFLAG "L_RETURNFLAG", L_LINESTATUS "L_LINESTATUS", L_SHIPINSTRUCT "L_SHIPINSTRUCT", L_SHIPMODE "L_SHIPMODE", L_COMMENT "L_COMMENT")
FROM LINEITEM
WHERE LINEITEM.L_ORDERKEY = ORDERS.O_ORDERKEY)
FROM ORDERS
WHERE ORDERS.O_CUSTKEY = CUSTOMER.C_CUSTKEY)
FROM CUSTOMER ;
Thanks very much in advance for your time,
Jinghao Liu

Please post this message at:
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Similar Messages

How to tune the performance of Oracle SQL/XML query?

Hi all,
I am running Oracle 9i and like to run the following Oracle SQL/XML query. It takes about 3+ hour and still not finish. If I get rid all the XML stuffs it only take minutes to run. Does anybody know how to what's the reason of this slow and how to tune it?
SELECT XMLElement("CUSTOMER",
XMLForest(C_CUSTKEY "C_CUSTKEY", C_NAME "C_NAME", C_ADDRESS "C_ADDRESS", C_PHONE "C_PHONE", C_MKTSEGMENT "C_MKTSEGMENT", C_COMMENT "C_COMMENT"),
(SELECT XMLAgg(XMLElement("ORDERS",
XMLForest(O_ORDERKEY "O_ORDERKEY", O_CUSTKEY "O_CUSTKEY", O_ORDERSTATUS "O_ORDERSTATUS", O_ORDERPRIORITY "O_ORDERPRIORITY", O_CLERK "O_CLERK", O_COMMENT "O_COMMENT"),
(SELECT XMLAgg(XMLElement("LINEITEM",
XMLForest(L_ORDERKEY "L_ORDERKEY", L_RETURNFLAG "L_RETURNFLAG", L_LINESTATUS "L_LINESTATUS", L_SHIPINSTRUCT "L_SHIPINSTRUCT", L_SHIPMODE "L_SHIPMODE", L_COMMENT "L_COMMENT")
FROM LINEITEM
WHERE LINEITEM.L_ORDERKEY = ORDERS.O_ORDERKEY)
FROM ORDERS
WHERE ORDERS.O_CUSTKEY = CUSTOMER.C_CUSTKEY)
FROM CUSTOMER ;
Thanks very much in advance for your time,
Jinghao Liu

ajallen wrote:
Why not something more like
SELECT *
FROM fact1 l,
FULL OUTER JOIN fact1 d
ON l.company = d.company
AND l.transactiontypeid = 1
AND d.transactiontypeid = 2;
Because this is not an equivalent of the original query.
drop table t1 cascade constraints purge;
drop table t2 cascade constraints purge;
create table t1 as select rownum t1_id from dual connect by level <= 5;
create table t2 as select rownum+2 t2_id from dual connect by level <= 5;
select * from (select * from t1 where t1_id > 2) t1 full outer join t2 on (t1_id = t2_id);
select * from t1 full outer join t2 on (t1_id = t2_id and t1_id > 2);
     T1_ID      T2_ID
         3          3
         4          4
         5          5
                    6
                    7
     T1_ID      T2_ID
         1
         2
         3          3
         4          4
         5          5
                    6
                    7

Oracle sql STRUCT query

Hi all. I have a simple program running in JDeveloper using JDBC for retrieving SDO_Geometry values from various spatial tables. The program works fine but when I run the following SQL statement to retrieve the geometry column from a table states it is returning the sdo_geometry values in the following format:
spatialQuery = "select a.geom from states a";oracle.sql.STRUCT@e2dae9,
oracle.sql.STRUCT@19209ea,
oracle.sql.STRUCT@c8f6f8,
oracle.sql.STRUCT@1ce2dd4,
oracle.sql.STRUCT@122cdb6,
I know the program works but can anyone tell me how to interpret these results or even how to translate them into a more useful format. Cheers Joe

I assume you are getting back a List (Vector) with the Struct inside it. Try ((List)query.getSingleResult()).get(0).
In JPA you should get the Struct back directly if the result size was 1, otherwise an Object[], this was a bug in EclipseLink 1.0 that was fixed in EclipseLink 1.1.
You should probably upgrade to EclipseLink 1.1.
James : http://www.eclipselink.org

Oracle SQL Select query takes long time than expected.

Hi,
I am facing a problem in SQL select query statement. There is a long time taken in select query from the Database.
The query is as follows.
select /*+rule */ f1.id,f1.fdn,p1.attr_name,p1.attr_value from fdnmappingtable f1,parametertable p1 where p1.id = f1.id and ((f1.object_type ='ne_sub_type.780' )) and ( (f1.id in(select id from fdnmappingtable where fdn like '0=#1#/14=#S0058-3#/17=#S0058-3#/18=#1#/780=#5#%')))order by f1.id asc
This query is taking more than 4 seconds to get the results in a system where the DB is running for more than 1 month.
The same query is taking very few milliseconds (50-100ms) in a system where the DB is freshly installed and the data in the tables are same in both the systems.
Kindly advice what is going wrong??
Regards,
Purushotham

SQL> @/alcatel/omc1/data/query.sql
2 ;
9 rows selected.
Execution Plan
Plan hash value: 3745571015
| Id | Operation | Name |
| 0 | SELECT STATEMENT | |
| 1 | SORT ORDER BY | |
| 2 | NESTED LOOPS | |
| 3 | NESTED LOOPS | |
| 4 | TABLE ACCESS FULL | PARAMETERTABLE |
|* 5 | TABLE ACCESS BY INDEX ROWID| FDNMAPPINGTABLE |
|* 6 | INDEX UNIQUE SCAN | PRIMARY_KY_FDNMAPPINGTABLE |
|* 7 | TABLE ACCESS BY INDEX ROWID | FDNMAPPINGTABLE |
|* 8 | INDEX UNIQUE SCAN | PRIMARY_KY_FDNMAPPINGTABLE |
Predicate Information (identified by operation id):
5 - filter("F1"."OBJECT_TYPE"='ne_sub_type.780')
6 - access("P1"."ID"="F1"."ID")
7 - filter("FDN" LIKE '0=#1#/14=#S0058-3#/17=#S0058-3#/18=#1#/780=#5#
8 - access("F1"."ID"="ID")
Note
- rule based optimizer used (consider using cbo)
Statistics
0 recursive calls
0 db block gets
0 consistent gets
0 physical reads
0 redo size
0 bytes sent via SQL*Net to client
0 bytes received via SQL*Net from client
0 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
9 rows processed
SQL>

How to connect from oracle sql developer ?

I've made one java class, to access UserRecord Data Base from sql developer.
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import java.io.*;
public class SelectData{
public SelectData(){}
public void selectData(){
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          Statement stat = null; //prepared statement create
          ResultSet rs=null; //result set to hold result
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          stat = con.createStatement();
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          while (rs.next()) {               // Position the cursor
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                    System.err.println("Name= " +rs.getString("Name"));
                    // Retrieve the first column value
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               System.err.println(e.getMessage());
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public static void main(String args[]){
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"oracle.jdbc.driver.OracleDriver"
Plz help me out from this problem and suggest any configuration if required in oracle sql developer to run my programs.

{color:#0000ff}hi,
add the jar for oracle jdbc to the libraries.
if you are using any IDE then just change the project properties adding the jar file.
if not edit the classpath of the envoirnment variables.
{color}{color:#ff0000}*manik*{color}

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Hi Gurus,
I am trying to execute an Oracle stored procedure from XI which has parameters of type VARCHAR2. How to specify these data types in data type in XI?
I am getting the below message when I execute the stored procedure from XI with data types CHAR/VARCHAR.
com.sap.aii.af.ra.ms.api.DeliveryException: Error processing request in sax parser: Error when executing statement for table/stored proc. 'TEST_PACKAGE.MAIN ' (structure 'statement'): java.sql.SQLException: ORA-06550: line 1, column 7: PLS-00306: wrong number or types of arguments in call to 'MAIN' ORA-06550: line 1, column 7: PL/SQL: Statement ignored
Please let me know.
Thanks
Kalyan

Hi kalyan,
i am also facing a similar issue. the oracle stored procedure has three parameters i.e, two input paramters and 1 output paramter.
I am passing all the parameters in the target structure, but i still get the same error.
i have use isInput = "true" for two of the input paramters and isOutput = "true" for my output paramter. For the output parameter, I am sending it blank.
Please suggest.
Thanks.
Krishnan

How do i display an sql SELECT query in a jtextarea?

Hi,
I have a program that takes any SQL string from an inputArea JtextArea and displays "command executed successfuly" in the outputArea JTextArea if it works.
My question is how do i make the outputArea display the actual query of the SELECT statment? Thanks!
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               String query = SQLCommand;
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                   Statement stmt = con.createStatement();
                   ResultSet rs = stmt.executeQuery(query);
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                   stmt.close();
               } catch (SQLException sqlex) {
                   outputArea.setText("Unable to Execute Command: \n" + query);
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It's a variation of the sample code I provided on the last post. Use a Vector of Vector of Objects to store the result set data (row and column data) and use another Vector to store the column names (for the JTable header). Then use the JTable constructor that accepts two Vector parameters to create your table. Eventually you'll want to customize your JTable by creating your own table model and custom cell editor and renderer. For now the sample code below will suffice.
For more on using JTable see the following:
http://java.sun.com/docs/books/tutorial/uiswing/components/table.html
Vector header = new Vector();
Vector result = new Vector();
int columns = rsmd.getColumnCount();
/* Retrieve column names */
for (int i = 1; i <= columns; i++)
header.add(rsmd.getColumnName(i));
while (rs.next())
Vector row = new Vector();
/* Columns numbers offset from one */
for (int i = 1; i <= columns; i++)
   row.add(rs.getObject(i));
result.add(row);
JTable table = new JTable(result,header);

SQL xml query problems

Hello,
I am trying to query a database column containing xml. How my problem is when I display my query on the page the data is not being shown properly.
The data in the database is like this:
<P><tag1>2003/05/22 11:01:34</tag1><tag2>2003/05/22</tag2><tag3>11:01:34</tag3><tag4></tag4>.......
However all that is returned is on the jsp page
2003/05/22 11:01:34<tag2>2003/05/22<tag3>11:01:34..............
i.e closing tags missing and empty pairs not shown at all.
My query is a simple
String sqlQuery="select * from table;
rs = stmt.executeQuery (sqlQuery);
rs.next();
out.print(rs.getString(1));
Can anyone suggest why the data stored in the column is being truncated and how I can prevent this.
Many thanks in advance
Les,

Surely this is because the browser is interpretting the tags as HTML tags? Do a "view source" on the page and it should be right.
Otherwise, you will have to store the query in the DB with escapt characters before the <'s

Oracle SQL/XML Code Example produces ORA-19207

I have tried executing the Code Example shown below which has been provided by Oracle for the SCOTT/TIGER emp and dept tables (http://otn.oracle.com/tech/xml/xmldb/htdocs/sql_xml_codeexamples.html), and it produces the following error:
ORA-19207 scalar parameter string of XMLELEMENT cannot have an alias.
I have looked up the following explanation of this error message:
Cause: The scalar parameter to XMLELEMENT has been qualified with an alias.
Action: Remove the AS clause of the scalar element.
Is there a way to fix this?
SELECT XMLElement("Department",
XMLForest(deptno "DeptNo", d.dname "DeptName", d.loc "Location"),
(SELECT XMLAGG(XMLElement("Employee",
XMLForest(e.empno "EmployeeId",
e.ename "Name",
e.job "Job",
e.mgr "Manager",
e.hiredate "Hiredate"),
e.sal "Salary",
e.comm "Commission"))
FROM emp e
WHERE e.deptno = d.deptno))
FROM dept d;

Hi ,
The reason for getting the SQL error is that, in the SQL there is a closing bracket that is wrongly put after "Hiredate", it should have been put after the "Commission". Correct this and the SQL
will run properly.
For example , the correct script will be like is:
SET LONG 5000
SELECT XMLElement("Department",
XMLForest(deptno "DeptNo", d.dname "DeptName", d.loc "Location"),
(SELECT XMLAGG(XMLElement("Employee",
XMLForest(e.empno "EmployeeId",
e.ename "Name",
e.job "Job",
e.mgr "Manager",
e.hiredate "Hiredate",
e.sal "Salary",
e.comm "Commission")))
FROM emp e
WHERE e.deptno = d.deptno))
FROM dept d;
Hope it helps.
Thanks
Shefali

How to change the default sql servery query name?

Whenever we click on new query button, Sql server automatically opens a new query with default name SQLQuery1.sql.
Can I change this default name? What I mean to say is I have to work with quite a number of databases on different servers. So I open multiple queries on different server. So I was finding a way where whenever I click on
New Query button it inherits servername or database name (e.g If I have database name like ABCD new query name should look like ABCDquery.sql ?)
So that I can distinguish which query belong to which Database?
I would be very greateful if you can please answer this.
Many thanks

Please try with different color code option for your servers:
Ref: http://technet.microsoft.com/en-us/library/hh213617.aspx
Set the Status Color for a Server in Object Explorer
To set a server status color in Object Explorer
In Object Explorer, select the Connect button and then select Database
Engine….
On the Connect to Server dialog, select Options >>.
Select the Use custom color check box.
To select the color, select the Select… button.
Select either a basic or custom color, then select OK.
Fill in the rest of the connection information, and then select the Connect button.
Note: This is to identify different server connected not for databases.

SQL XML Query Help

I have four tables and I want to create one XML file. I provided the temp tables with
data and expected output.
create table #ZDL(ZLN bigint, ZTLA int, ZMR decimal, ZCLS varchar(20), ZPITIP money)
insert into #ZDL values(1234, 200000, 8.5, 'CART', 1500.00)
create table #ZBL(ZLN bigint, ZBN varchar(50), ZFN varchar(20), ZMN varchar(8), ZLL varchar(20))
insert into #ZBL values(1234, 'TEST Test', 'TEST', null, 'Test')
create table #ZCC(ZLN bigint, ZSN int, ZCE int)
insert into #ZCC values(1234, 1, 4)
create table #ZP(ZLN bigint, ZPT varchar(50), ZPP int, ZNU int)
insert into #ZP values(1234, 'Attached', 6500, 3)
Expected XML Result should be:
<TEST_DATA xmlns="http://www.TestData.com/Schema/Test"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.TestData.com/Schema/Test_Schema.xsd">
<KEY _Name="ZID" _Value="789" _ID="ZID"/>
<ZL>
<ZLN>1234</ZLN>
<ZTLA>200000</ZTLA>
<ZMR>8.5</ZMR>
<ZCLS>CART</ZCLS>
<ZPITIP>1500.00</ZPITIP>
</ZL>
<ZBS>
<ZB>
<ZBN>TEST Test</ZBN>
<ZFN>TEST</ZFN>
<ZMN></ZMN>
<ZLL>Test</ZLL>
</ZB>
</ZBS>
<ZCC>
<ZC>
<ZSN>1</ZSN>
<ZCE>4</ZCE>
</ZC>
</ZCC>
<ZP>
<ZPT>Attached</ZPT>
<ZPP>6500</ZPP>
<ZNU>3</ZNU>
</ZP>
</TEST_DATA>
Thanks

little change in your query as OP expected
SELECT
(SELECT ZLN ,
ZTLA ,
ZMR ,
ZCLS,
ZPITIP --AS [*]
FROM #ZDL
WHERE ZLN = z1.ZLN
FOR XML PATH('ZL'),TYPE) AS [*],
(SELECT
ZBN ,--AS [*],
ZFN ,
ISNULL(ZMN,'') AS ZMN ,
ZLL
FROM #ZBL
WHERE ZLN = z1.ZLN
FOR XML PATH('ZB'),TYPE) AS [ZBS],
(SELECT
ZSN,ZCE
FROM #ZCC
WHERE ZLN = z1.ZLN
FOR XML PATH('ZC'),TYPE) AS [ZCC],
(SELECT
ZPT,
ZPP,
ZNU
FROM #ZP
WHERE ZLN = z1.ZLN
FOR XML PATH('ZP'),TYPE) AS [*]
FROM (SELECT DISTINCT ZLN FROM #ZDL) z1
FOR XML PATH('TEST_DATA')
Nope
it will give different output
see the difference
mine
<TEST_DATA>
<ZL>
<ZLN>1234</ZLN>
<ZTLA>200000</ZTLA>
<ZMR>9</ZMR>
<ZCLS>CART</ZCLS>
1500.0000
</ZL>
<ZBS>
<ZB>
TEST Test
<ZFN>TEST</ZFN>
<ZMN />
<ZLL>Test</ZLL>
</ZB>
</ZBS>
<ZCC>
<ZC>
<ZSN>1</ZSN>
<ZCE>4</ZCE>
</ZC>
</ZCC>
<ZP>
<ZPT>Attached</ZPT>
<ZPP>6500</ZPP>
<ZNU>3</ZNU>
</ZP>
</TEST_DATA>
and see your output
<TEST_DATA>
<ZL>
<ZLN>1234</ZLN>
<ZTLA>200000</ZTLA>
<ZMR>9</ZMR>
<ZCLS>CART</ZCLS>
<ZPITIP>1500.0000</ZPITIP>
</ZL>
<ZBS>
<ZB>
<ZBN>TEST Test</ZBN>
<ZFN>TEST</ZFN>
<ZMN />
<ZLL>Test</ZLL>
</ZB>
</ZBS>
<ZCC>
<ZC>
<ZSN>1</ZSN>
<ZCE>4</ZCE>
</ZC>
</ZCC>
<ZP>
<ZPT>Attached</ZPT>
<ZPP>6500</ZPP>
<ZNU>3</ZNU>
</ZP>
</TEST_DATA>
Its different from what Op wanted
my suggestion gives exactly in the format wanted
notice extra nodes ZPITIP and ZLN
coming in your case
Your original suggestion also has this issues
Please Mark This As Answer if it helps to solve the issue Visakh ---------------------------- http://visakhm.blogspot.com/ https://www.facebook.com/VmBlogs

How to view the Oracle sql history

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many thanks!!

not tested.
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Respected All,
I have installed Oracle 11g on Microsoft Windows Server 2003. I want to access Oracle Developer Tools from server to different client machine which are connected with server through LAN.
regards,
pkj

user10683742 wrote:
Dont think i have DBA access..It gives the following error
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Hi ,
Currently i am using Oracle SQL Developer as my Database IDE .
Is it possible to use Orqcles SQLDeveloper for the purpose of Optimizing an SQL Query ??
For example assume i am having a query as :
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Please share your ideas , thanks in advance .

1. Your query looks very simplistic as it is, so I fail to see how you can better optimise it (unless 'Tranac_Master' is a view, in which case I'd need to see the view details).
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How do I create an undeclared namespace node with sql/xml?

I have to interact with a .NET web service that is expecting to have an xml node with an undeclared namespace, i.e. <address xmlns=""> I figured that I could create this by using XMLATTRIBUTES ( '' AS "xmlns") but a null attribute will not be added to the attribute listing. This works fine for other xmlns entries that contain values. Without this undeclared namespace node, the web service reports an Internal SOAP failure message, so I have to include it. Do I have to resort to manually injecting this null attribute via DOM after I produce the xml? I'm using SQL/XML query generate the xml as a view which gives me the entire packet for this document/literal web service OTHER THAN this missing undeclared namespace element.
Any tips/suggestions would be helpful! Thanks a bunch, and have a Happy Holiday Season.
Eric

You can use UTL_RAW package.
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Regards

How to perf tune Oracle SQL/XML query?

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