Temp Tables in Oracle?
Hi.
Where can i find information abount using temp tables in Oracle?
I usually work with SQL Server and use temp tables. I don't have any idea about temp tables in Oracle. Could you give me any information?
Thanks.
I'm sorry for may english, I'm spanish.
There are two completely different things being discussed here temporary segments used by Oracle's internal processes and Oracle global temporary tables.
Or did I misunderstand?
We have used Oracle's global temporary tables as quick staging array while data is being integrated into finance apps. Testing showed the process performed faster with this design.
Both temporary segments and Oracle's global temporary tables are stored in the TEMP tablespace.
Similar Messages
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Global temp table in Oracle EBS
hi gurus,
i have a GTT with "ON COMMIT PRESERVE ROWS".
i am populating this table through an OAF page and displaying the data.
as per the documentation it should delete the data from the table once user logs out from the Oracle EBS but it's not happening.
the user still sees the records from the previous session.
please throw some light here.
thanks,i was wondering if there is any sysadmin level setup/profile setup which can end the session (JDBC) once user logs out?No such profile option exists.
Behavior of Global Temp Table in JDBC
Behavior of Global Temp Table in JDBC
Global temp tables with connection pooling
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:4444273995237
Make global temporary tables transaction specific
http://asktom.oracle.com/pls/apex/f?p=100:11:0::::P11_QUESTION_ID:868691300346807468
Thanks,
Hussein -
How to work on temp table in oracle 10g
Hi Guys,
I have one simple procedure and it is returning some records through dbms_output.put_line.
cursor c1 is select object_name from t_Turbo;
type c1_type is table of c1%rowtype;
rec1 c1_type;
begin
open c1;
loop
fetch c1 bulk collect into rec1 limit 200;
for i in 1..rec1.count loop
dbms_output.put_line(rec1.i);
end loop;
exit when c1%notfound;
end loop;
end;
Now i am plaing to use temp table at dmbs_output.put_line in place and from there I want to select the records.
Can any one help me on this.
Thanks in advance!
Regards,
KLRThis is what you need.
create or replace procedure test ( pRet out sys_refcursor )
as
begin
open pRet for select object_name from t_Turbo;
end;SYS_REFCURSOR is a cursor type defined by oracle. You can define your owner. -
Update Global Temp Table in Oracle 11g
Hi Experts,
Scenario: I have stored procedure A which calls procedure B. Procedure B uses Global temp Tables(With On Commit Preserve Rows) to work with the data.
I am trying to update one of the GTT in Proc B but unable to do it .. via SQL or via PL/SQL Cursor/Collection. There is no syntax nor logical error and the PL/SQL proc completes execution successfully but the rows are not getting updated. My Db version is Oralce 11g 11203.
Update statement is something like this.
Update <GTT>
SET amount1 = amount1 *-1, amount2 = amount2 *-1
where field1 = <value>
and field2 in ( Select filed2 from <table1> );
Any idea why would this update not work? Has anyone faced this issue in Oracle 11g??
Appreciate your suggestions & thanks in Advance for your inputs.
Cheers,
MSUpdate statement is something like this.
Update <GTT>
SET amount1 = amount1 *-1, amount2 = amount2 *-1
where field1 = <value>
and field2 in ( Select filed2 from <table1> );
Any idea why would this update not work?
You already told us that it DOES work - no errors or exceptions.
It is trivial to determine if that update will do anything - just turn it into a SELECT and see if any rows are ntselected:
v_cnt INTEGER;
SELECT COUNT(*) INTO v_cnt FROM myGTT
WHERE field1 = <value>
AND field2 in (Select field2 from <tablee1>);
Then take a look at the 'count' that you get. -
Two temp tables in a Stored Procedure
Hi guys,
Is it feasable to use two stored procedures and form joins between them within a single stored procedure. I am trying a workaround for cursors in SYBASE.
Thanks,
DeveloperThis Create a temporary table in stored proc is a long and occasionally fractious discussion of the differences between temp tables in Oracle and MS SQL Server (and hence Sybase). You may wish to review it, or at least the links to the documentation.
Alternatively, expalin what it is the sybase code is doing and we will tell the best way to implement it in Oracle.
Cheers, APC -
Hi,
I am trying to develop a procedure in which i have to create four tables to improve the performance of the procedure.
is there any other way in which i can do this? i don't want to create four table objects. if i use global temporary table. then also it will create structure in DB. i tried with table of records method. that is getting too complicated since its a very big procedure.
can anyone suggest me other ways of achieving this?user12288167 wrote:
this procedure is called at the same time by 10 different interfaces. the procedure has 4 temp tables now, which are required to improve the performance. after all the processing is done it will insert the result into a final table. Temp tables are not required to improve performance. In fact, it slows things down and make performance worse.
What db operation has the single largest performance impact? I/O.
What does your so-called "+improvment+" do with temp tables? Generate more I/O for creating data in the temp tables and manipulate data in the temp tables.
So, how can generating more I/O be a performance improvement??
so we need separate tables for all these interfaces.i.e. 5*10=50 tables in all which is not acceptable by our project.
or is there any way to implement wait in the procedure while it is being accessed somewhere else?You need to scrap that procedure entirely. It is pretty much junk and will perform like junk.
There is very seldom a need for temp tables in Oracle. Very Important: The reasons for using temp tables in SQL-Server/Informix/etc DOES NOT exist in Oracle.
In Oracle, readers of data NEVER blocks writers of data. And writers of data NEVER blocks readers of data. Oracle provides and guarantees read consistency. There is no need for temp tables to deal with the lack of data consistency or (unwarranted) read/write serialisation.
Read up on Oracle read consistency - and use that, correctly. Without resorting to hacks like you had to do with temp tables in other (inferior) database products. -
Hi
Can anyone help me with the exact syntax to create temp table in
Oracle 8i in Stored Proc. Eg.
CREATE PROCEDURE MROSiteNoVendors
@IDCustomer INT
AS
SELECT DISTINCT s.IDCustomer, SiteName, Address , AddressII,
City, State, Zip, s.IDSite
INTO #TempTbl
FROM Sites s LEFT JOIN rSiteVendors rSV ON s.IDSite =
rSV.IDSite
WHERE (s.IDCustomer = @IDCustomer)
ORDER BY SiteName
Update #TempTbl Set Address = '' WHERE Address Is Null
Update #TempTbl Set City = '' WHERE City Is Null
Update #TempTbl Set State = '' WHERE State Is Null
Update #TempTbl Set Zip = '' WHERE Zip Is Null
SELECT * FROM #TempTbl
DROP TABLE #TempTbl
nullHello Krish,
See this document for Upgrade specific tasks
[SAP NetWeaver 7.0 Business Intelligence Upgrade Specifics|https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/10564d5c-cf00-2a10-7b87-c94e38267742]
Also see this thread [Upgradation from BW 3.5 to BI 7.0|Upgradation from BW 3.5 to BI 7.0;
Thanks
Chandran
Edited by: Chandran Ganesan on Mar 3, 2008 10:00 PM -
Hi All
Hi to use Global temp tables in Oracle?
-Regards
ManiStep 1: Create a table as indicated in the documentation. Your only tricky decision here is whether to keep the data for the duration of the transaction or the session.
Step 2: Insert data into the table.
Step 3: Select data from the table.
Safe when used as directed.
Cheers, APC -
Create temp table in PL/SQL
How to create temp table in PL/SQL procedure/function?
In SQL plus, I can create a table using
create table <table name>
on commit reserve ..If you're referring to temp table similar as the temp table of informix .. the answer is you cannot create a temp table in oracle than will automatically be cleaned by oracle session.
However its possible to create a remporary table but this will be a permanent part of your schema.. and you'll be the one responsible for dropping this table.
regards,
Victor ([email protected])
<BLOCKQUOTE><font size="1" face="Verdana, Arial, Helvetica">quote:</font><HR>Originally posted by Mike Chan:
How to create temp table in PL/SQL procedure/function?
In SQL plus, I can create a table using
create table <table name>
on commit reserve ..
<HR></BLOCKQUOTE>
null -
Global temp table trigger error on Oracle AS
we have a set of triggers that load a temp table in the before delete,update and process the table in an after statement trigger. the data that's loaded is a complaintid and when the complaintid is selected into a variable in the after statement, a No data found error is fired. This only happens on Oracle AS both 9i and 10g, it does not happen on jboss. All the app servers use connection pooling and they are 9i Enterprise Edition Dedicated database servers.
Is it possible that there is a bug in Oracle AS that allows multiple sessions to affect the same global variables ?
Sorry it's a long one, but I wanted to include everything I could
table creation script.
CREATE GLOBAL TEMPORARY TABLE TEMPEVENTS
( COMPLAINTID VARCHAR2(20) NOT NULL ENABLE,
COMPLAINTEVENTID NUMBER NOT NULL ENABLE,
STARTDATE DATE,
EVENTTYPE NUMBER,
EVENTSUBTYPE NUMBER,
DELETED NUMBER
) ON COMMIT DELETE ROWS
Before update trigger-- as a test I saved the data in a permanent table and all columns have usable values.
create or replace trigger BeforeUpdateReportDataROW
BEFORE Delete or Update of deleted, startdate on complaintevents
FOR EACH ROW
BEGIN
IF (DELETING AND :old.deleted = 0) OR (UPDATING AND :new.deleted=1 AND :old.startDate = :new.startDate) THEN
TEMPDATA.v_triggerType := 'D';
ELSIF UPDATING AND :old.deleted=1 AND :old.startDate = :new.startDate THEN /*undeleting*/
TEMPDATA.v_triggerType := 'U';
ELSIF UPDATING AND :old.startDate != :new.startDate THEN /*new date*/
TEMPDATA.v_triggerType := 'S';
ELSE
TEMPDATA.v_triggerType := 'N';
END IF;
TEMPDATA.v_NumEntries := TEMPDATA.v_NumEntries + 1;
TEMPDATA.v_complaintids(TEMPDATA.v_NumEntries) := :old.complaintid;
TEMPDATA.v_complainteventids(TEMPDATA.v_NumEntries) := :old.complainteventid;
END;
After statement trigger -- the error happens on the
SELECT complaintid
INTO complaintid
FROM complaintevents
WHERE complaintid = tempdata.v_complaintids (loop_index)
AND complainteventid = tempdata.v_complainteventids (loop_index);
statement. this is all one transaction the complaintid is loaded from the complaintevent table, and is not a primary key, nor is there only one record in the complaintevent table for each complaintid.
create or replace trigger complaintevents_del_upd_trig
AFTER DELETE OR UPDATE OF deleted, startdate
ON complaintevents
DECLARE
complaintid VARCHAR2 (20);
loop_index NUMBER;
hold_complaintid VARCHAR2 (20);
BEGIN
IF tempdata.v_triggertype = 'D'
THEN /*deleting event*/
hold_complaintid := ' ';
FOR loop_index IN 1 .. tempdata.v_numentries
LOOP
SELECT complaintid
INTO complaintid
FROM complaintevents
WHERE complaintid = tempdata.v_complaintids (loop_index)
AND complainteventid = tempdata.v_complainteventids (loop_index);
IF hold_complaintid != complaintid
THEN
INSERT INTO tempevents
(complaintid, complainteventid, startdate, eventtype,
eventsubtype, deleted)
SELECT complaintid, complainteventid, startdate, eventtype,
eventsubtype, deleted
FROM complaintevents
WHERE complaintid = tempdata.v_complaintids (loop_index);
END IF;
DELETE tempevents
WHERE complainteventid =
tempdata.v_complainteventids (loop_index)
OR deleted = 1;
hold_complaintid := complaintid;
END LOOP;
ELSIF tempdata.v_triggertype = 'U'
THEN /*undeleting*/
hold_complaintid := ' ';
FOR loop_index IN 1 .. tempdata.v_numentries
LOOP
SELECT complaintid
INTO complaintid
FROM complaintevents
WHERE complaintid = tempdata.v_complaintids (loop_index)
AND complainteventid = tempdata.v_complainteventids (loop_index);
IF hold_complaintid != complaintid
THEN
INSERT INTO tempevents
(complaintid, complainteventid, startdate, eventtype,
eventsubtype, deleted)
SELECT complaintid, complainteventid, startdate, eventtype,
eventsubtype, deleted
FROM complaintevents
WHERE complaintid = tempdata.v_complaintids (loop_index);
END IF;
DELETE tempevents
WHERE deleted = 1;
INSERT INTO tempevents
(complaintid, complainteventid, startdate, eventtype,
eventsubtype, deleted)
SELECT complaintid, complainteventid, startdate, eventtype,
eventsubtype, 0
FROM complaintevents
WHERE complainteventid =
tempdata.v_complainteventids (loop_index);
hold_complaintid := complaintid;
END LOOP;
ELSIF tempdata.v_triggertype = 'S'
THEN /*date change*/
hold_complaintid := ' ';
FOR loop_index IN 1 .. tempdata.v_numentries
LOOP
SELECT complaintid
INTO complaintid
FROM complaintevents
WHERE complaintid = tempdata.v_complaintids (loop_index)
AND complainteventid = tempdata.v_complainteventids (loop_index);
IF hold_complaintid != complaintid
THEN
INSERT INTO tempevents
(complaintid, complainteventid, startdate, eventtype,
eventsubtype, deleted)
SELECT complaintid, complainteventid, startdate, eventtype,
eventsubtype, deleted
FROM complaintevents
WHERE complaintid = tempdata.v_complaintids (loop_index);
END IF;
DELETE tempevents
WHERE deleted = 1;
hold_complaintid := complaintid;
END LOOP;
ELSE
RETURN;
END IF;
END;CREATE GLOBAL TEMPORARY TABLE test_glb ON COMMIT DELETE ROWS
AS SELECT * FROM test1;btw I'm assuming you are just using the SELECT statement to copy the definition of test1. Since DDL statements commit, there will be no rows in test_glb after creating it.
Edited by: William Robertson on Feb 23, 2009 7:31 AM -
How to use "Auto increment" in temp table Oracle
Pleas tell me yaar,
In MS Sql for Auto increment i am using like this "seqid int identity" for temp table
t_seq_tbl table(seqid int identity,EVENT_SEQ_NO varchar(30))
In oracle how to use....As far as I know there is not any auto increment data type in Oracle. Instead of this you should create a sequence and get the next value of the sequence while creating a row in your table.
CREATE SEQUENCE Test_Sequence ;
CREATE TABLE Test_Table ( Id NUMBER , Foo VARCHAR2(4) ) ;
ALTER TABLE Test_Table ADD CONSTRAINT Test_Table_PK_Id PRIMARY KEY ( Id ) ;
INSERT INTO Test_Table ( Id , Information ) VALUES ( Test_Sequence.NEXTVAL , 'FOO' ) ; -
Is it possible to load and read from an Oracle global temp table?
Is there a way to call an Oracle database package to pre-load global temp tables in BIP? I am an Oracle Reports user but a newbie to BIP. In Oracle Reports, I use the before-reports trigger to execute a database package that will populate a temp table with data. Then, in Oracle Reports, I read the temp table as the report data source. In BIP, I cannot find the ‘before-reports trigger’ equalivant. Since all the complicated business logic is contained in package it would be helpful to bring in the loaded temp table into BIP. Any thoughts?
Example:
Step 1. In the Oracle Reports before report trigger : exec db_package.load_temp_table_procedure (:var1, :var2, :var3);
Step 2: Select * from temp_table.Look at Datatemplates,
It has pre and post report trigger,
You can do all these stuff over there,
Calling a package in Data template -
Use of Oracle global temp table in BI Publisher
Hi All,
I have witten a function which populates a Gobal temp table.I call the function and do a select on the global temp table.This fails to give me any result.
We are calling the function within the package in the 'beforeReport' trigger in our Data Template in BI Publisher.
I tried to check the session id and found that the sessions are different when we execute the functiona and when we do a select query.
How can I avoid this situation of changing session?
I have tried by removing commit from the function but even thta didnt help.
Please let me know if anyone has suugestion on this.
Thanks in advance!Hi,
To check if the function is working fine , we inserted the output from temp table into a normal physical table .We queried the physical table and found the values there.
So , the function is working fine.
We dont have any statement like 'PRAGMA AUTONOMOUS_TRANSACTION ' in our function.
Do we need to add it?
Just to clarify the issue , We have populated the temp table by calling a function and after that we are trying to query the temp table.However, it appears that the session changes between teh function call and issuing of select query .This is resultin into no data being fetched as the values in Gloabal temp table persist only for a session.
Thanks! -
Global temp tables difference in oracle 10g and 11g
Hi All,
we are planning to upgrade metasolv applications from 6.0.15 (currently suing 10g) to 6.2.1(currently using 11g).We are using the Global temp tables in 10g .i just want to know is there any impact if we upgrade the Global temp tables from 10g to 11g.if so can u please explain me clearly ?
Please and thanks.FAQ on new features: Re: 14. What's the difference between different versions of the database?
This can be used as a reference for all your queries.. -
Disk space transaction and temp table lock in oracle
Hi,
Today many sessions used to get disk space transaction lock and temp table lock and i am seeing these locks first time in my Production database,
is there any workaround to avoid this contension.
Thanks
Prakash GRPost your version (all 3 decimal places).
Post the SELECT statement and results that have led you to this conclusion.
Other than the fact that you have seen a number what, precisely, is the issue.
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