How to generate the tag xml from oracle pl/sql

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• How to generate the alphanumeric sequence under oracle

  Hi Experts,

  I need to create a primary key as below,

  Its should start from a001, a002... a100 after reaching 100 the next value in the sequence must begin by b001... b100, like wise the sequence should go through until summer z001 alphabet... z100.

  Please let me know for any information.

  Kind regards

  Millar

  This will generate the a1 - a100, b1 - b100,... z1 - z100, aa1 - aa100, ab1 - ab100,... az1 - az100,...

  SEQUENCE of s FALL

  /

  CREATE SEQUENCE s

  /

  CREATE OR REPLACE

  FUNCTION get_s_nextval

  RETURN VARCHAR2

  IS

  number of v_nextval;

  number of v_alpha;

  number of v_number;

  v_base26 varchar2 (100);

  BEGIN

  v_nextval: = s.nextval;

  v_number: = MOD(v_nextval,100) CASE

  WHEN 0 THEN 100

  Of OTHER MOD(v_nextval,100)

  END;

  v_alpha: = CEIL(v_nextval / 100) - 1;

  v_base26: = NULL;

  LOOP

  v_base26: = CHR (ASCII ('a') + MOD(v_alpha,26)) | v_base26;

  EXIT WHEN v_alpha<>

  v_alpha: = TRUNC(v_alpha / 26) - 1;

  END LOOP;

  RETURN v_base26 | LPAD (v_number, 3, '0');

  END;

  /

  WITH t AS)

  SELECT s get_s_nextval,

  level lvl

  OF the double

  CONNECT BY level<=>

  )

  SELECT s

  T

  WHERE MOD(lvl,100)<=>

  ORDER BY lvl

  /

  S
  ------------------
  A001
  A100
  B001
  B100
  C001
  C100
  D001
  D100
  E001
  E100
  F001

  S
  ------------------
  F100
  G001
  G100
  H001
  H100
  I001
  i100
  J001
  J100

  20 selected lines.

  SQL >

  SY.

• Ongoing replication of the selected tables from Oracle to SQL Server

  Hi all

  How can we replicate selected tables to Oracle 11 g for SQL Server 2008/2012?

  Is GoldenGate the only option

  No matter who did it before or have the steps to do it?

  Thank you

  Define "replicate".

  If you have no budget, you can open a connection directly from SQL Server to Oracle, or vice versa. In Oracle, they are called links DB; in SQL Server, they are called "linked servers".

  Datanamic also have tools that claim to do the cross-DB replication. I have no experience with them and is not an endorsement - I know they exist.

• How to generate the following XML

  Hi all
  
  I have 2 tables, demo_orders and demo_order_items (child)
  How can I generate something like this:
  

  <?xml version="1.0"?>
  <ROWSET>
   <ROW>
    <ORDER_ID>1</ORDER_ID>
    <CUSTOMER_ID>1</CUSTOMER_ID>
    <ORDER_TOTAL>1200</ORDER_TOTAL>
    <ORDER_TIMESTAMP>2009-01-16T16:20:09.000</ORDER_TIMESTAMP>
    <USER_ID>2</USER_ID>
    <ITEMS>
     <ITEMROW>
      <ORDER_ITEM_ID>1</ORDER_ITEM_ID>
      <ORDER_ID>1</ORDER_ID>
      <PRODUCT_ID>1</PRODUCT_ID>
      <UNIT_PRICE>1200</UNIT_PRICE>
      <QUANTITY>1</QUANTITY>
     </ITEMROW>
    </ITEMS>
   </ROW>
   <ROW>
    <ORDER_ID>2</ORDER_ID>
    <CUSTOMER_ID>2</CUSTOMER_ID>
    <ORDER_TOTAL>599</ORDER_TOTAL>
    <ORDER_TIMESTAMP>2009-01-11T16:20:09.000</ORDER_TIMESTAMP>
    <USER_ID>2</USER_ID>
    <ITEMS>
     <ITEMROW>
      <ORDER_ITEM_ID>2</ORDER_ITEM_ID>
      <ORDER_ID>2</ORDER_ID>
      <PRODUCT_ID>2</PRODUCT_ID>
      <UNIT_PRICE>199</UNIT_PRICE>
      <QUANTITY>1</QUANTITY>
     </ITEMROW>
     <ITEMROW>
      <ORDER_ITEM_ID>3</ORDER_ITEM_ID>
      <ORDER_ID>2</ORDER_ID>
      <PRODUCT_ID>8</PRODUCT_ID>
      <UNIT_PRICE>50</UNIT_PRICE>
      <QUANTITY>2</QUANTITY>
     </ITEMROW>
    </ITEMS>
   </ROW>
  </ROWSET>

  Hi, I am assuming that the columns of the table have the same names as the xml elements in your example.

  Try this:

  SQL >select xmlelement("ROWSET",
    2                    xmlagg(xmlelement("ROW",xmlforest(order_id,
    3                                                      customer_id,
    4                                                      order_total,
    5                                                      to_char(order_timestamp,'yyyy-mm-dd"T"hh24:mi:ss.FF3') as "ORDER_TIMESTAMP",
    6                                                      user_id),
    7                                            xmlelement("ITEMS",(select
    8                                                               xmlagg(xmlelement("ITEMROW",xmlforest(order_item_id,
    9                                                                                                     order_id,
   10                                                                                                     product_id,
   11                                                                                                     unit_price,
   12                                                                                                     quantity)
   13                                                                                )
   14                                                                     ) from demo_order_items i where i.order_id=o.order_id)
   15                                                       )
   16                                     )
   17                          )
   18                   ).extract('/*') as yourXML
   19    from demo_orders o;  
  
  YOURXML
  --------------------------------------------------------------------------------------------------------------
  
    
      1
      1
      1200
      2009-12-28T10:19:01.464
      2
      
        
          1
          1
          1
          1200
          1
        
      
    
    
      2
      2
      599
      2009-12-28T10:19:01.464
      2
      
        
          2
          2
          2
          199
          1
        
        
          3
          2
          8
          50
          2
        
      
    
  
  

  The extract('/*') method is useful enough formatted output. Remove in your production applications to improve performance and space-saving.

  Max
  [My Italian blog Oracle | http://oracleitalia.wordpress.com/2009/12/27/inviare-email-dal-db-utilizzando-utl_smtp/]

• How to access the web service from Oracle?

  Database version: Oracle Database 10g Enterprise Edition Release 10.2.0.3.0
  
  I'm making a call to a web service through a procedure/function...
  
  I tried to use
  

  CREATE OR REPLACE PROCEDURE Call_Rest_Webservice
  
   AS
  
    t_Http_Req Utl_Http.Req;
  
    t_Http_Resp Utl_Http.Resp;
  
    t_Request_Body VARCHAR2(30000);
  
    t_Respond VARCHAR2(30000);
  
    t_Start_Pos INTEGER := 1;
  
    t_Output VARCHAR2(2000);
  
  BEGIN
  
    /*Construct the information you want to send to the webservice.
    
    Normally this would be in a xml structure. But for a REST-
    
    webservice this is not mandatory. The webservice i needed to
    
    call excepts plain test.*/
  
    t_Request_Body := 'the data you want to send to the webservice';
  
    /*Telling Oracle where the webservice can be found, what kind of request is made
    
    and the version of the HTTP*/
  
    t_Http_Req := Utl_Http.Begin_Request('**webservice address**',
                                         'GET',
                                         'HTTP/1.1');
  
    /*In my case the webservice used authentication with a username an password
    
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    --Utl_Http.Set_Authentication(t_Http_Req, 'username', 'password');
  
    /*Describe in the request-header what kind of data is send*/
  
    Utl_Http.Set_Header(t_Http_Req, 'Content-Type', 'text/xml charset=UTF-8');
  
    /*Describe in the request-header the lengt of the data*/
  
    Utl_Http.Set_Header(t_Http_Req, 'Content-Length', Length(t_Request_Body));
  
    /*Put the data in de body of the request*/
  
    Utl_Http.Write_Text(t_Http_Req, t_Request_Body);
  
    /*make the actual request to the webservice en catch the responce in a
    
    variable*/
  
    t_Http_Resp := Utl_Http.Get_Response(t_Http_Req);
  
    /*Read the body of the response, so you can find out if the information was
    
      received ok by the webservice.
    
      Go to the documentation of the webservice for what kind of responce you
    
      should expect. In my case it was:
    
      <responce>
    
        <status>ok</status>
    
      </responce>
    
    */
  
    Utl_Http.Read_Text(t_Http_Resp, t_Respond);
  
    /*Some closing?1 Releasing some memory, i think....*/
  
    Utl_Http.End_Response(t_Http_Resp);
  
  END;

  But it's me ORA-29272: HTTP request failed
  ORA-06512: at "SYS." UTL_HTTP", line 1029
  ORA-12545: Connect failed because target host or object does not exist
  
  But I can connect to the web server by going on * webservice address * through my browser.
  
  Is there an ACL must be open in order to have this capacity? I asked my s/n, but she asked me that I will need to give its name to username/password / ip in order to open an ACL...
  However there is no name to username/password required during a tour of the web service...
  
  Any help would be much appreciated...
  
  Thank you
  
  Published by: 986006 on March 4, 2013 08:38

  Y.L wrote:

  This is because the database could not connect to the specified server. Bad host name or IP address specified. Inability to resolve the hostname to an IP address. Firewall blocking. Etc.

  The host name, I put here can be visit through my browser. I think that it is not question of the host server... So, it could be a firewall on my side of the database which must be opened in order to visit the host?

  The "web browser" (your PL/SQL using UTL_HTTP code) code is running on the Oracle database server. He needs the same type of network access that has your browser on your PC. (firewalls open, authentication of the proxy if necessary, etc.).

  On 11g. Not on 10g.

  I saw the code example you post from the link you provided... those who only works on 11 g?
  If we can work on 10g, which package or what are the steps I need to follow in order to have that works on me?

  The code I posted works on both versions. My comment was regards the ACLs. No ACLs exist on 10g. If you only need to execute privs on the affected packages (e.g., UTL_HTTP, etc.).

  ACL were introduced with 11g - 11g, you also need the ADMINISTRATOR to create an ACL for you which will allow access to the UTL_HTTP network so now.

• How to retrieve the image BLOB from database and display the image in rtf file using the Oracle XML Desktop 5.6.2 publication server?

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