Global temporary table in PL/SQL with XML

Hello

I have the impression that it is something strange or maybe I'm missing something basic.

Step 1: Create a global Temp table that should not be specific transaction.

create a global temporary table Temp01

(

NUMBER OF TICKET_ID

, Varchar2 (10) of the REGION

NUMBER OF THE YEAR

, CO_ID VARCHAR2 (10)

) ON COMMIT DELETE ROWS.

Step 2:

My XML that goes as a parameter to a new function.

< TICKET >

< TICKET_ID > 38498051 < / TICKET_ID >

the USA < REGION > < / REGION >

< YEAR > 2014 < / YEAR >

XYZ123 < CO_ID > < / CO_ID >

< / TICKET >

Step 3: Create a Stand Alone function:

-drop function aagarwal.wr_creation;

create or replace FUNCTION XML_FUNC

(

ret_msg out varchar2,.

p_xmlval IN varchar2

)

RETURN varchar2

l_xmlval varchar2 (4000): = p_xmlval;

V_CO_ID VARCHAR2 (10);

V_CODE VARCHAR2 (10);

BEGIN

INSERT INTO Temp01

(

TICKET_ID,

REGION,

BLEACHED,

CO_ID

)

SELECT

EXTRACTVALUE (XmlType (p_xmlval), "/ TICKET/TICKET_ID ') ID,.

EXTRACTVALUE (XmlType (p_xmlval), "/ TICKET/REGION") REGION.

EXTRACTVALUE (XmlType (p_xmlval), "/ TICKET per YEAR"),.

EXTRACTVALUE (XmlType (p_xmlval), "/ TICKET/CO_ID ') CO_ID

FROM DUAL;

ret_msg: = 'SUCCESS';

-SELECT CO_ID IN V_CO_ID of aagarwal. TEMP_STAGE_WR;

-return ret_msg;

EXCEPTION

WHILE OTHERS THEN

ret_msg: = sqlerrm;

Return ret_msg;

END;

BEGIN

SELECT CO_ID INTO V_CO_ID FROM Temp01;

/ * MERGE IN the site is

With the HELP of aagarwal. TEMP01 T

WE (T.co_id = se.code AND se.type_nm = ' TYPE' and se.src_nm = T.region)

WHEN NOT MATCHED THEN

INSERT (ID, SRCNM, CODE, TYPENM)

VALUES (SHARED_SEQ. NEXTVAL, T.region, T.co_id, 'TYPE');

-commit; */

return ret_msg | "ACE" | v_co_id;

END;

Fact - created function.

NOTE: MERGE statement is blocked and if the function was created in sweetness.

Step 4: Call the function

declare

l_out varchar2 (50);

l_outr varchar2 (50);

p_xml XMLTYPE.

Start

l_outr: = XML_FUNC (l_out, ' < TICKET >)

< TICKET_ID > 38498051 < / TICKET_ID >

the USA < REGION > < / REGION >

< YEAR > 2014 < / YEAR >

XYZ123 < CO_ID > < / CO_ID >

(< / TICKET > ');

dbms_output.put_line (l_outr);

end;

Step 5: Check the value being inserted into the temporary Table:

Select * from temp01;

So far so good.

THE PROBLEM:

Now I want to tweek the XML_FUNC function above by uncommenting MERGE statement, which brings me to an error that is not differentiable:

I.e. PL/SQL: ORA-00942: table or view does not exist in line on MERGE pointing to Temp01 statement.

NOTE: I tested this Merge statement explicitly (as long as the execution of Stand Alone and also by calling via anonymous block PLSQL) and its absolutely perfect work. And SITE table exist.

PS: I would be grateful, if there is a better way to write this code? I'm not a regular PLSQL developer and so badly can write the code of practice.

Kind regards

AAG.

Using 11.2.0.3:

Owner of all these three objects is DBA.

Are you sure?

After the release of:

Select object_name, object_type

of object

where object_name in ('TEMP01', 'SITE', 'XML_FUNC');

You must grant the explicit right to select on the table for the owner of the function if the owners are different.

This works as expected for me (user DEV has all 3 items):

Connected to Oracle Database 11g Enterprise Edition Release 11.2.0.3.0

Logged in as dev

SQL >

SQL > create a global temporary table Temp01)

NUMBER OF TICKET_ID 2

3, Varchar2 (10) of the REGION

4, NUMBER OF THE YEAR

5, CO_ID VARCHAR2 (10)

6)

7. ON COMMIT DELETE ROWS.

Table created

SQL >

SQL > create table site)

Identification number 2

3, srcnm varchar2 (10)

4, code varchar2 (10)

5, typenm varchar2 (10)

6 );

Table created

SQL > create the sequence shared_seq;

Order of creation

SQL >

SQL >

SQL > create or replace FUNCTION XML_FUNC)

2 p_xmlval IN varchar2

3)

4 RETURN varchar2

5 is

6 l_xmlval xmltype: = xmltype (p_xmlval);

7. START

8

9 INSERT INTO Temp01

(10)

TICKET_ID 11,

REGION 12,

13 YEARS,

CO_ID 14

15)

16. SELECT ID EXTRACTVALUE(l_xmlval, '/TICKET/TICKET_ID'),

17 EXTRACTVALUE(l_xmlval, '/TICKET/REGION') REGION,

18 EXTRACTVALUE (l_xmlval, ' / TICKET per YEAR ') YEAR.

19 EXTRACTVALUE(l_xmlval, '/TICKET/CO_ID') CO_ID

20 FROM DUAL;

21

22. MERGE IN site

23. WITH THE HELP OF TEMP01 T

(24)

25 T.co_id = se.code

26 AND se.typenm = 'TYPE '.

27 and se.srcnm = T.region

28)

29 WHEN NOT MATCHED THEN

30 INSERT (ID, SRCNM, CODE, TYPENM)

31 VALUES (SHARED_SEQ. NEXTVAL, T.region, T.co_id, 'TYPE');

32

33 return "SUCCESS";

34

35 END;

36.

Feature created

SQL >

SQL >

SQL > set serveroutput on

SQL >

SQL >

SQL > declare

2

3 l_outr varchar2 (50);

4

5. start

6

7 l_outr: = XML_FUNC (')

8 38498051

9 USA

10 2014

11 XYZ123

12 ');

13

14 dbms_output.put_line (l_outr);

15

16 end;

17.

SUCCESS

PL/SQL procedure successfully completed

SQL > select * from site;

ID CODE TYPENM SRCNM

---------- ---------- ---------- ----------

TYPE 1 USA XYZ123

Tags: Oracle Development

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Published by: Amoeba on 23 August 2012 13:39

Published by: Amoeba on 23 August 2012 13:41
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>
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addition of {noformat}

{noformat} tags. Please read {message:id=9360002} and learn to do this yourself.

Hello

Could be

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Database version 10.2.0.2.0

Status 80 - development of Q / A

WORKAROUND SOLUTION:
- - - - - - - - - -
Use the series query or table normal and not temporary.

Concerning
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EDIT: Status seems to be incorrect, in patch has been in 10.2.0.4

No MOS?

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Published by: CharlesRoos on June 2, 2010 03:03
CharlesRoos wrote:
>
What makes the solution of the temporary table better?
>

1. This approach/solution is easier to read for other developers. Ugly hierarchical query with the function LAG is difficult to read and edit.

I agree with you! It's one of the reasons when you should stop developing very sophisticated SQL statements. Even if the performance is slightly better.

2-hierarchical-feature in sql is always slow and friendly error.

I don't think that a hierarchical solution is necessary. but it may depend on your version of Oracle (think MODEL clause).

3. it is easy to implement the "temporary table solution." with complex sql construction will be time-consuming and bug-friendly and complex.
3. I'm not sure the question of perfomance, here I may be wrong, I test/compare.

...

CharlesRoos wrote:
1 can someone confirm that I don't need "ORDER byclause?

I never would implement it WITHOUT a prescription by cluase. Why depend on such a solution?
One of your strong points would improve maintainability. It is against this requirement.
Imagine this happening, for example, when another developer decided to move from a temporary to a normal table. Maybe by adding a field 'user '.
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I can't find Google evidence.

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* In a multiuser environment, the table could put a few lines where another session comes to delete certain lines. This could influence the agenda.
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Are global temporary tables, a standard feature of Oracle?

I apologize for introducing me to this community with what must seem like a very stupid question...
I am a software developer, working on a product that uses Oracle as its database, specifically Oracle 11 g Enterprise Edition. Recently, I solved a problem of performance by converting an ordinary table into a global temporary table. Before my boss allows me to put this change in the product, it wants to be sure that global temporary tables are a standard part of Oracle, not something that the customer must install separately or pay extra for. (This is the first time that we never used them in our product, so I think that most of the team are not familiar with them).
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Here you can see "feature availability by Edition":

http://docs.Oracle.com/CD/E11882_01/license.112/e47877/editions.htm#DBLIC116

TWG tables is not even mentioned, which means that they do not belong to the functional components are paid separately.

One caveat - if you have an application that uses connection pooling, it is recommended to use ON COMMIT DELETE ROWS, not ON COMMIT PRESERVE ROWS

(or always use explicitly "DELETE gtt_table" at the beginning), because otherwise a user of the application can display the data TWG who has previously made a second user of the application.

Kind regards

Zlatko

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Oracle 11g R2

I am using a dynamic SQL statement to delete rows. The WHERE THERE EXIST uses a global temporary table and it gives me

PLS-00357: Table, view or reference sequence "TMPPRE_ARC" not allowed in this context

Any ideas of a work around?

create global temporary table tmppre_arc
  ( id number)
  ON COMMIT PRESERVE ROWS;


CREATE OR REPLACE PROCEDURE test_del
IS
   v_owner_tbl varchar2(61) := 'test_table'     ;
BEGIN   /* DELETE_SOURCE */
        EXECUTE IMMEDIATE
            'DELETE FROM ' || v_owner_tbl || ' v ' || chr(10) ||
            'WHERE EXISTS ( SELECT    null '       || chr(10) ||
            'FROM      ' || tmppre_arc || ' r '  || chr(10) ||
            'WHERE       r.id     = v.id )' ;
END test_del;
/
show errors


LIsNE/COL ERROR
-------- -----------------------------------------------------------------
5/9      PL/SQL: Statement ignored
8/29     PLS-00357: Table,View Or Sequence reference 'TMPPRE_ARC' not
allowed in this contenxt





         allowed in this context

This is false:

'FROM ' | tmppre_arc | ' r ' || Chr (10) |

Should be

"OF tmppre_arc r | Chr (10) |

SY.

What to fill in 'field of the temporary table' for global temporary tables?

Hello
I use the Data Modeler 4.0.1.836 and everything that I put in the box 'the scope of the table temp' for a global temporary table doesn't seem to affect the DDL script about the ON COMMIT PRESERVE/DELETE the LINES option. The script poster ON COMMIT PRESERVE ROWS always anything.
Yet, some of my temporary tables must be created as ON COMMIT DELETE ROWS.
Using the Data Modeler wrote about it:
Scope of the temporary Table:
For a class as a temporary table, you can specify a scope, such as the Dimension or the Session.
Not sure what 'Dimension' has to do with the scope here, but it makes no difference.
I tried to put 'Session', 'Dimension', 'Operation', but no luck. So what is the text for the script generate ON COMMIT DELETE ROWS?
Thank you

Hello

The temporary Scope of Table property (on page Types of Classification of the table properties dialog box) is purely documentary.

To set ON COMMIT DELETE ROWS you must expand the browser for the relational model and find the node for the relevant Oracle physical model. If you develop it you will find an entry there for your Table. Double-click on that to get the physical model properties dialog box for your table, and you will find a "Temporary" facility that has options (Preserve Rows), YES (Delete Rows) YES or no.

David

Global temporary tables

Hi, db 10g,
I created a global temporary table with this statement:
create a table temporary global items (item_id);
and tried to insert inside of Toad, and I got the message
1 row inserted,
but when I asked it, I got
no selected line?
I tried the script several times, and the result is the same?
Thank you

Hello

Hi Salem wrote:

It worked, I added this clause

ON COMMIT PRESERVE ROWS;

to create it, statement and it worked correctly, but are not this clause the default?

No, the default is ON COMMIT DELETE ROWS. I don't know why; ON COMMIT PRESERVE ROWS seems to be much more widely used.

trigger on the global temporary table

Hello
I have a global temporary table
CREATE GLOBAL TEMPORARY table to register)
no_registre NUMBER primary key,
date of create_time
) ON COMMIT DELETE ROWS.
I have to write a trigger on the table every time that the insertion is made.
create or replace trigger tri_register
before inserting the REGISTER
for each line
Start
: new create_Date: = sysdate;
end;
/
This trigger can work on this registry table?
Thank you

913578 wrote:

Sorry Karthik.

the thing is that I did not have privelleges to test, I send the code to some dba who makes deployment.

Sorry to hear that!

Please tell me... We can write triggers on GTT?

of course, you can!

SQL > create a global temporary table registry
() 2
no_registre 3 number primary key,
create_time date 4
5)
6 on the validation to delete lines;

Table created.

SQL > create or replace trigger register_trig before insert in the register for each line
2 start
3: new.create_time: = sysdate;
4 end;
5.

Trigger created.

SQL > insert into values of registry (no_registre) (1);

1 line of creation.

SQL > select * from registry;

NO_REGISTRE CREATE_TI
----------- ---------
1 8 JULY 13

Global temporary Table problem in ADF
Hello

I have an application where I need to use a TWG (on the ranks of commit preserve) DB and try to insert data to TWG of screw ADF.
But the table does not store data even after the Commit command. [Even I tried with permament DB table, and it worked.]

Could someone help me find the problem with inserting data TWG.

Kind regards
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It is not a good idea to use a global temporary Table in an ADF application. The problem is that all web applications are really stateless. ADF maintains the State of a session data backup or reload it when necessary. Regarding the database, ADF can disconnect a session from the database at any time and connect to another session. This means that you do not necessarily have a continuous database session, then the lines you wrote to a TWG may well gone with the following query. There are ways to tell ADF not to do, but they have a considerable performance drop.

Therefore, rethinking how you will save temporary information for the duration of a user session. You can do it in an object view ADF BC (VO) - interviewed by VO data carried session - if ADF needs to share a user session to load the data of another user (this is called "passivation") it will save these data. Then when ADF 'active' session, he'll find the saved data and reload it. Or you can use a permanent table with your name or session id - a little more complicated, but possible.

If you want to tell us a little bit your use case - you need your application to do so, we may have other alternatives.

Global temporary table in PL/SQL with XML

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