Can global temporary table work for me?

Hi i recently found out about GTT, I first created a table and inserted values into my new_table but it was
I have a report that I need to display a time range based on the time given in the report, now each page of the report shows a different time range. I created a formula that would insert into a new_table based on the value of the time range, I would then pull the values from the table to the report in a repeating frame, this caused the problem because data in table is overwriting the previous page values before it is displayed on the screen(there is a delete from table in the formula). This is my problem, how can I pull from the table before its deleted, will GTT work , if so How?

I have no idea if it will work as you neglected to provide any code and any information about how you are producing the reports and with what tool.
There are two types of global temporary tables. Do you know the difference?
The docs are at http://tahiti.oracle.com
Demos of both types in Morgan's Library at www.psoug.org
After you've read the Oracle docs and understand how they work.
And after you've run the Library demos.
If you still have questions post them here along with sufficient information for someone not sitting next to you to know what you are doing.

Similar Messages

Difference between global temporary table and with clause

what is the difference between global temporary table and with claue .(with clause is used as table in select query)

what is the difference between global temporary table and with claue .(with clause is used as table in select query)Its big difference between the two.
Global temporary table exists for a session or a transaction while, with clause lives only for a query.
GTT is a named permanent storage table whose data flushes away on session exit or at end of a transaction while WITH clause just provides names to a reference data within a query (which is as good as having union subquery in FROM clause)
eg
SQL> with c as
2 (
3 select 1 id1, 2 id2 from dual union all
4 select 2,4 from dual union all
5 select 3,5 from dual)
6 select * from c
7 /
       ID1        ID2
         1          2
         2          4
         3          5
SQL> ed
Wrote file afiedt.buf
1 select *
2 from
3 (
4 select 1 id1, 2 id2 from dual union all
5 select 2,4 from dual union all
6* select 3,5 from dual)
7 /
       ID1        ID2
         1          2
         2          4
         3          5But GTT serves its purpose very well in case of session specific transaction and the scnearion with multiple users working on same data.

Will Partitioning improve performance on Global Temporary Table

Dear Guru,
In one of complicated module I am using Global Temporary Table (GTT) for intermediate processing i.e. It will store required data in it but the rows of the data goes into 10,00,000 - 20,00,000.
Can Partitioning or Indexing on Global Temporary Table improve the performance?
Thanking in Advance
Sanjeev

Sounds like an odd use of a GTT to me, but I'm sure there are valid reasons...
Presumably you are going to be processing all of these rows in some way? In which case I can't see how partitioning, even if it's possible (And I don't think it is) would help you.
Indexes - sure, that might help, but again, if you are reading all/most of these rows anyway they might not help or even get used.
Can you give a bit more detail about exactly what you are doing?
Edited by: Carlovski on Nov 24, 2010 12:51 PM

Global temporary table report with different session

Dear All,
I want to pass collection of records from a Form to a report, I think of global temporary table, but according to our application setting, openning a report through OM, opens new session, hence data will not be saved in that global temporary table.
thanks for any idea.

Please see my post here.
Re: Want to Create View as per Condition Fires After Parameter Form.
In forms, insert records into this temp table and pass the records' id, which was inserted by you with each record, to the report (one collection of records will have only one id).
Hope this helps.

How can i write the trigger for Global Temporary Table

Hi Grus,
How can i write the trigger for Global Temporary Table.
I was created the GTT with trigger using the below script .
CREATE GLOBAL TEMPORARY TABLE GLOBAL_TEMP
EMP_C_NAME VARCHAR2(20 BYTE)
ON COMMIT PRESERVE ROWS;
CREATE OR REPLACE TRIGGER TRI_GLOBAL_TEMP
BEFORE DELETE OR UPDATE OR INSERT
ON GLOBAL_TEMP
REFERENCING NEW AS NEW OLD AS OLD
FOR EACH ROW
BEGIN
INSERT INTO EMPNAME VALUES (:OLD.EMP_C_NAME);
END;
trigger was create successfully, but the wouldn't insert into to EMPNAME Table..
Please guide whether am correct or not? if not kindly give a correct syntax with example
Thanks in Advance,
Arun M M

BEGIN
INSERT INTO EMPNAME VALUES (:OLD.EMP_C_NAME);
END;
you are referencing old value in insert stmt.
BEGIN
INSERT INTO EMPNAME VALUES (:new.EMP_C_NAME);
END;then run ur application it works fine...
CREATE GLOBAL TEMPORARY TABLE GLOBAL_TEMP
EMP_C_NAME VARCHAR2(20 BYTE)
ON COMMIT PRESERVE ROWS;
CREATE OR REPLACE TRIGGER TRI_GLOBAL_TEMP
BEFORE DELETE OR UPDATE OR INSERT
ON GLOBAL_TEMP
REFERENCING NEW AS NEW OLD AS OLD
FOR EACH ROW
BEGIN
dbms_output.put_line(:OLD.EMP_C_NAME||'yahoo');
INSERT INTO EMPNAME VALUES (:new.EMP_C_NAME);
dbms_output.put_line(:OLD.EMP_C_NAME);
END;
create table EMPNAME as select * from GLOBAL_TEMP where 1=2
insert into GLOBAL_TEMP values('fgfdgd');
commit;
select * from GLOBAL_TEMP;
select * from EMPNAME;
output:
1 rows inserted
commit succeeded.
EMP_C_NAME
fgfdgd
1 rows selected
EMP_C_NAME
fgfdgd
1 rows selectedgot it Arun
Edited by: OraclePLSQL on Dec 28, 2010 6:07 PM

Global Temporary table is Not working For Pdf Reports

Hi all
we are using oracle db-10g, developer suite-10g.
While generating the Report for the satisfying several conditions we are fetching the data into
Global temporary table
On commit preserve rows
from this temp tables excel is generated properly. but pdf is not generating can anybody exaplain why it is not generating and what to do for that
Thank you

query and view are not possible
here i am giving one of the requirement
my project is belongs to inventory project.
report should be generated on the different selection criteria like
1)user can select one or more product codes
2)for that product code one or more item codes can select
like this so many different selection are there more than 12 selections from different tables
For this each different selection product code into gtt_prod_cd and item_cd into gtt_item_cd. after that performed the query and in where clause we are comparing the values with gtt.
can you please suggest me what to do for PDF Reports

Can I use Parallel execution for Global Temporary table within SP and How

Dear Gurus,
I have Global temporary table as below
Create global temporary table Temp_Emp
empno number,
ename varchar2(20),
deptno number
) on commit preserve rows;
During processing I insert the data into this table and then fire query on Temp_Emp, get the data and pass it to front end.
The SP as shown below
Create or replace procedure get_emp_data
empid in number,
emp_detail out RefCsr -- Ref cursor
as
begin
-- some code here
open emp_detail for
select *
from Temp_Emp
where empno = empid;
end get_emp_data;
Can use Parallel Query execution on Temp_Emp table and how ?
i.e. do need to explicitly use parallel construct in query or is it default.
Because I have many SQL like above (on global temporary tables) within Stored Procedures.
Can anybody give me any suggestion.
Thanking in Advance
Sanjeev

How come you are populating a temporary table and then opening a cursor on this temporary table for the front end to use?
Couldn't you presumably just form a query out of the code you use to populate the temporary table? This is the recommended approach in Oracle.

Create view for Global Temporary Table

if view is create for global temporary table so exactly how it works which helps regarding application performance.
Regaards,
Sambit Ray

A view is just a stored query. It can be on global temporary tables or regular one, makes no difference.

What to fill in "temp table scope" for global temporary tables?

Hi,
I'm using Data Modeler 4.0.1.836 and whatever I put in the "temp table scope" box for a global temporary table doesn't seem to affect the DDL script regarding the ON COMMIT PRESERVE/DELETE ROWS option. The script always shows ON COMMIT PRESERVE ROWS no matter what.
Yet, some of my temporary tables must be created as ON COMMIT DELETE ROWS.
The Data Modeler help says the following about this :
Temp Table Scope:
For a table classified as Temporary, you can specify a scope, such as Session or Dimension.
Not sure what "Dimension" has to do with the scope here, but it doesn't make any difference.
I tried putting "Session", "Dimension", "Transaction", but no luck. So what's the text to put for the script to generate ON COMMIT DELETE ROWS?
Thanks

Hi,
The Temporary Table Scope property (on the Classification Types page of the Table Properties dialog) is purely documentary.
To set ON COMMIT DELETE ROWS you should expand the Browser node for the Relational Model and look for the node for the relevant Oracle Physical Model. If you expand this you will find an entry there for your Table. Double-click on this to get the Physical Model properties dialog for your table, and you will find a "Temporary" property which has options YES (Preserve Rows), YES (Delete Rows) or NO.
David

How can i create a Global Temporary Table inside a Stored Procedure....

Hi...
I need to create a Global Temporary Table inside a Stored
Procedure....
I have no idea how to do that....
Please....if u can send me a sample, send to me....
Thanks a lot

To create a global temporary table inside a stored procedure,
the minimal syntax would be:
CREATE OR REPLACE PROCEDURE procedure_name
AS
BEGIN
EXECUTE IMMEDIATE 'CREATE GLOBAL TEMPORARY TABLE table_name'
|| '(column_name NUMBER)';
END procedure_name;
As Todd stated, it would probably be better to create the global
temporary table outside of the procedure:
SQL> CREATE GLOBAL TEMPORARY TABLE table_name
2 (column_name NUMBER);
Table created.
You can also specify things like ON COMMIT PRESERVE ROWS or ON
COMMIT DELETE ROWS.
It may be that there is something else, like a PL/SQL table of
records or a cursor, that would suit your needs better. It is
difficult to guess without knowing what you want to do with it.

Why can't global temporary tables have foreign keys?

Hi,
I have a forms module which shows two blocks. The first block is based on a normal database table EMP and the second one is based on a global temporary table SAL_TEMP. There is a master-detail relation between the two blocks. So far, in Designer I created two normal database tables EMP and SAL_TEMP and created a foreign key with validation level "none" from the table SAL_TEMP to the table EMP. By creating the foreign key, Designer generates code to automatically synchronize the data between the master and the detail block in my form.
In the latest version of Designer it is finally possible to indicate a table as a global temporary table. But when I try to change my table SAL_TEMP to a global temporary table (session) I get an error that this is not allowed because my table contains foreign keys. So the Designer team finally implemented this feature but it is useless to me.
Can someone explain to me the reason of this restriction?
Vincent

Just out of curiosity - which version of Designer supports the creation of global temp tables? We are running version 9.0.2.80.6 and, as far as I am award, this does not support it (unless I am being really thick!) - is this new 10g Dev. Suite functionality?
thanks,
Pete

What is the syntax for creating global temporary table using a select query

hii
I'm creating a global temporary table using a select query ..how to mention 'on commit preserve rows' that?
create global temporary table t1 as select * from trn_ordbase on commit preserve rows;
but this is invalid syntax,so how to mention on commit preserve rows in this???if i dont mention it ,by default its considering as on commit delete rows.
Please help me out of this problem.

create global temporary table t1 as select * from trn_ordbase on commit preserve rows;You CANNOT use this syntax.
http://download-east.oracle.com/docs/cd/B19188_01/doc/B15917/sqcmd.htm
http://download-east.oracle.com/docs/cd/B19188_01/doc/B15917/glob_tab.gif
http://download-east.oracle.com/docs/cd/B19188_01/doc/B15917/cre_tabl.gif

Transaction with Global Temporary Table

Problem:
Transaction starts with few DML statements and in the middle we are calling a JAVA method which creates the dynamic global temporary table and proceeding with few DML statements, if one of the statement fails, in the exception clause we are trying to rollback and transactions after the DDL (create global temp table) are rolled back and transactions before the DDL (create global temp table) are committed.
We cannot pre-create the global temporary table, since we do not know the number of temp table to be pre-created.
How we can resolve this issue? The same concept works for SQL server.
Example of our issue:
--drop table table1 purge;
--drop table t_id purge;
Create table table1 (col1 number, col2 varchar2(20));
Insert into table1 values (1, 'Test1');
Create global temporary table t_id (id number);
Insert into table1 values (2, 'Test2');
Rollback;
After the rollback you can see only the 'Test1' record.

> We cannot pre-create the global temporary table, since we do not know the number of temp table to be pre-created.
I don't see how one procedure could need to create an unknown number of temporary tables. Do they all have different (and unknown) column lists? Couldn't you combine them into a single table with a key to distinguish betweeen the different sets of rows?

Global temporary table in PL/SQL called from APEX page

I have a global temporary table in a PL/SQL procedure that is called from an APEX page.
The global temp table is populated with data as the procedure runs and then at the end of the procedure I do a create_collection_from_query_b to populate a collection with the data from the temp table. (I do this b/c it is much faster than creating the collection and doing an add_member for each row.)
The problem is that there are no commits in my procedure but I cannot get the bulk insert to work unless I define the temp table as on commit preserve rows.
Can anyone shed any light on this issue.
Thanks,
Andrew

alamantia wrote:
My PL/SQL procedure is called from an after submit page process. Does that imply that there is a commit happening after that process is successful?Ultimately, yes.
If the process calls the PL/SQL procedure and the temp table is in the procedure, wouldn't the commit fire after all the PL/SQL code is complete which would be after the bulk insert from the temp table to my collection?Yes, but at any point in the procedure containing code like
:APEX_ITEM := ...or
select ... into :APEX_ITEM from ...or
my_procedure(p_in => ..., p_out => :APEX_ITEM, ...);or
apex_util.set_session_state(...);then APEX will commit whilst maintaining session state.
If you don't have any of these events in the procedure, then test to see if the commit is occurring in <tt>apex_collection.create_collection_from_query_b</tt> prior to creation of the collection.

Doubt with Global Temporary table

hi,
i have created a global temporary table with ON COMMIT DELETE ROWS option. in my Function in a loop i m inserting values into this Table, after that loop closes and then i m selecting some other values from DB. and in the last i am returning a ref cursor which is selecting values from temporary table i hav created.
now the thing is i m not getting any values in the cursor.
later I have created the table with ON COMMIT PRESERVE ROWS option, in this case cursor returning values,
can anyone explain me the functionality, as per my knowledge global temporary table values are session specific so why i m not getting the values in the 1st case when i used ON COMMIT DELETE ROWS (same session).
Thanks
Piyush

Ok, here's a simple example, like we'd like to see from you not working....
First create a GTT with ON COMMIT DELETE ROWS...
SQL> ed
Wrote file afiedt.buf
1* create global temporary table mytable (x number) on commit delete rows
SQL> /
Table created.Now a simple function that populates the GTT and returns a ref cursor to the data without doing any commits (hence the data should be there!)
SQL> ed
Wrote file afiedt.buf
1 create or replace function pop_table return sys_refcursor is
2    v_rc sys_refcursor;
3 begin
4    insert into mytable
5    select rownum from dual connect by rownum <= 10;
6    OPEN v_rc FOR SELECT x FROM mytable;
7    RETURN v_rc;
8* end;
SQL> /
Function created.So now we call the function and get a reference to our ref cursor...
SQL> var v_a refcursor;
SQL> exec :v_a := pop_table();
PL/SQL procedure successfully completed.So, in principle, because no commits have been issued the ref cursor should return data...
SQL> print v_a;
         X
         1
         2
         3
         4
         5
         6
         7
         8
         9
        10
10 rows selected.... which it does.
Now, what happens if we do that again...
SQL> commit;
Commit complete.
SQL> exec :v_a := pop_table();
PL/SQL procedure successfully completed.... but this time we commit before retrieving the data...
SQL> commit;
Commit complete.
SQL> print v_a;
ERROR:
ORA-00600: internal error code, arguments: [kcbz_check_objd_typ_1], [0], [0], [1], [], [], [], []
no rows selected
SQL>Oracle has (correctly) lost reference to the data because of the commit.
So show us what yours is doing.

Can global temporary table work for me?

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